diff --git a/.github/workflows/samples-kotlin-client.yaml b/.github/workflows/samples-kotlin-client.yaml
index 23ffc655a9e2..4b0dd3d3df36 100644
--- a/.github/workflows/samples-kotlin-client.yaml
+++ b/.github/workflows/samples-kotlin-client.yaml
@@ -71,6 +71,7 @@ jobs:
- samples/client/others/kotlin-jvm-okhttp-path-comments
- samples/client/others/kotlin-integer-enum
- samples/client/petstore/kotlin-allOff-discriminator-kotlinx-serialization
+ - samples/client/petstore/kotlin-fix-double-serializable-annotation
steps:
- uses: actions/checkout@v5
- uses: actions/setup-java@v5
diff --git a/bin/configs/kotlin-fix-double-serializable-annotation.yaml b/bin/configs/kotlin-fix-double-serializable-annotation.yaml
new file mode 100644
index 000000000000..b77c60f56568
--- /dev/null
+++ b/bin/configs/kotlin-fix-double-serializable-annotation.yaml
@@ -0,0 +1,10 @@
+generatorName: kotlin
+library: multiplatform
+outputDir: samples/client/petstore/kotlin-fix-double-serializable-annotation
+inputSpec: modules/openapi-generator/src/test/resources/bugs/issue_18904.yaml
+templateDir: modules/openapi-generator/src/main/resources/kotlin-client
+additionalProperties:
+ serializationLibrary: kotlinx_serialization
+ dateLibrary: kotlinx-datetime
+ generateOneOfAnyOfWrappers: true
+
diff --git a/modules/openapi-generator/src/main/resources/kotlin-client/anyof_class.mustache b/modules/openapi-generator/src/main/resources/kotlin-client/anyof_class.mustache
index 213b2fc15645..69afceaa6f6c 100644
--- a/modules/openapi-generator/src/main/resources/kotlin-client/anyof_class.mustache
+++ b/modules/openapi-generator/src/main/resources/kotlin-client/anyof_class.mustache
@@ -66,7 +66,7 @@ import java.io.IOException
{{#parcelizeModels}}
@Parcelize
{{/parcelizeModels}}
-{{#multiplatform}}{{^discriminator}}@Serializable{{/discriminator}}{{/multiplatform}}{{#kotlinx_serialization}}{{#serializableModel}}@KSerializable{{/serializableModel}}{{^serializableModel}}@Serializable{{/serializableModel}}{{/kotlinx_serialization}}{{#moshi}}{{#moshiCodeGen}}@JsonClass(generateAdapter = true){{/moshiCodeGen}}{{/moshi}}{{#jackson}}{{#discriminator}}{{>typeInfoAnnotation}}{{/discriminator}}{{/jackson}}
+{{#multiplatform}}{{^discriminator}}@Serializable{{/discriminator}}{{/multiplatform}}{{#kotlinx_serialization}}{{#serializableModel}}@KSerializable{{/serializableModel}}{{^serializableModel}}{{^multiplatform}}@Serializable{{/multiplatform}}{{/serializableModel}}{{/kotlinx_serialization}}{{#moshi}}{{#moshiCodeGen}}@JsonClass(generateAdapter = true){{/moshiCodeGen}}{{/moshi}}{{#jackson}}{{#discriminator}}{{>typeInfoAnnotation}}{{/discriminator}}{{/jackson}}
{{#isDeprecated}}
@Deprecated(message = "This schema is deprecated.")
{{/isDeprecated}}
diff --git a/modules/openapi-generator/src/main/resources/kotlin-client/data_class.mustache b/modules/openapi-generator/src/main/resources/kotlin-client/data_class.mustache
index 564ce0214e50..35eb23fec0df 100644
--- a/modules/openapi-generator/src/main/resources/kotlin-client/data_class.mustache
+++ b/modules/openapi-generator/src/main/resources/kotlin-client/data_class.mustache
@@ -77,7 +77,7 @@ import {{packageName}}.infrastructure.ITransformForStorage
{{#parcelizeModels}}
@Parcelize
{{/parcelizeModels}}
-{{#multiplatform}}@Serializable{{/multiplatform}}{{#kotlinx_serialization}}{{#serializableModel}}@KSerializable{{/serializableModel}}{{^serializableModel}}@Serializable{{/serializableModel}}{{/kotlinx_serialization}}{{#moshi}}{{#moshiCodeGen}}@JsonClass(generateAdapter = true){{/moshiCodeGen}}{{/moshi}}{{#jackson}}{{#discriminator}}{{>typeInfoAnnotation}}{{/discriminator}}{{/jackson}}
+{{#multiplatform}}@Serializable{{/multiplatform}}{{#kotlinx_serialization}}{{#serializableModel}}@KSerializable{{/serializableModel}}{{^serializableModel}}{{^multiplatform}}@Serializable{{/multiplatform}}{{/serializableModel}}{{/kotlinx_serialization}}{{#moshi}}{{#moshiCodeGen}}@JsonClass(generateAdapter = true){{/moshiCodeGen}}{{/moshi}}{{#jackson}}{{#discriminator}}{{>typeInfoAnnotation}}{{/discriminator}}{{/jackson}}
{{#isDeprecated}}
@Deprecated(message = "This schema is deprecated.")
{{/isDeprecated}}
diff --git a/modules/openapi-generator/src/main/resources/kotlin-client/enum_class.mustache b/modules/openapi-generator/src/main/resources/kotlin-client/enum_class.mustache
index 16326a77fe02..8969631cb3aa 100644
--- a/modules/openapi-generator/src/main/resources/kotlin-client/enum_class.mustache
+++ b/modules/openapi-generator/src/main/resources/kotlin-client/enum_class.mustache
@@ -46,7 +46,7 @@ import kotlinx.serialization.*
*
* Values: {{#allowableValues}}{{#enumVars}}{{&name}}{{^-last}},{{/-last}}{{/enumVars}}{{/allowableValues}}
*/
-{{#multiplatform}}@Serializable{{/multiplatform}}{{#kotlinx_serialization}}@Serializable{{#enumUnknownDefaultCase}}(with = {{classname}}Serializer::class){{/enumUnknownDefaultCase}}{{^enumUnknownDefaultCase}}{{^isString}}(with = {{classname}}Serializer::class){{/isString}}{{/enumUnknownDefaultCase}}{{/kotlinx_serialization}}
+{{#multiplatform}}@Serializable{{/multiplatform}}{{#kotlinx_serialization}}{{^multiplatform}}@Serializable{{/multiplatform}}{{#enumUnknownDefaultCase}}(with = {{classname}}Serializer::class){{/enumUnknownDefaultCase}}{{^enumUnknownDefaultCase}}{{^isString}}(with = {{classname}}Serializer::class){{/isString}}{{/enumUnknownDefaultCase}}{{/kotlinx_serialization}}
{{^multiplatform}}
{{#moshi}}
@JsonClass(generateAdapter = false)
diff --git a/modules/openapi-generator/src/main/resources/kotlin-client/oneof_class.mustache b/modules/openapi-generator/src/main/resources/kotlin-client/oneof_class.mustache
index a6423598c0b9..442228682a0b 100644
--- a/modules/openapi-generator/src/main/resources/kotlin-client/oneof_class.mustache
+++ b/modules/openapi-generator/src/main/resources/kotlin-client/oneof_class.mustache
@@ -66,7 +66,7 @@ import java.io.IOException
{{#parcelizeModels}}
@Parcelize
{{/parcelizeModels}}
-{{#multiplatform}}{{^discriminator}}@Serializable{{/discriminator}}{{/multiplatform}}{{#kotlinx_serialization}}{{#serializableModel}}@KSerializable{{/serializableModel}}{{^serializableModel}}@Serializable{{/serializableModel}}{{/kotlinx_serialization}}{{#moshi}}{{#moshiCodeGen}}@JsonClass(generateAdapter = true){{/moshiCodeGen}}{{/moshi}}{{#jackson}}{{#discriminator}}{{>typeInfoAnnotation}}{{/discriminator}}{{/jackson}}
+{{#multiplatform}}{{^discriminator}}@Serializable{{/discriminator}}{{/multiplatform}}{{#kotlinx_serialization}}{{#serializableModel}}@KSerializable{{/serializableModel}}{{^serializableModel}}{{^multiplatform}}@Serializable{{/multiplatform}}{{/serializableModel}}{{/kotlinx_serialization}}{{#moshi}}{{#moshiCodeGen}}@JsonClass(generateAdapter = true){{/moshiCodeGen}}{{/moshi}}{{#jackson}}{{#discriminator}}{{>typeInfoAnnotation}}{{/discriminator}}{{/jackson}}
{{#isDeprecated}}
@Deprecated(message = "This schema is deprecated.")
{{/isDeprecated}}
diff --git a/modules/openapi-generator/src/test/resources/bugs/issue_18904.yaml b/modules/openapi-generator/src/test/resources/bugs/issue_18904.yaml
new file mode 100644
index 000000000000..49c69cae59d9
--- /dev/null
+++ b/modules/openapi-generator/src/test/resources/bugs/issue_18904.yaml
@@ -0,0 +1,64 @@
+openapi: 3.0.3
+info: { title: demo, version: 1.0.0 }
+paths: {}
+components:
+ schemas:
+
+ # data_class + enum_class
+ Pet:
+ type: object
+ required: [id, name, kind]
+ properties:
+ id: { type: string }
+ name: { type: string }
+ kind: { $ref: '#/components/schemas/PetKind' }
+
+ PetKind:
+ type: string
+ enum: [cat, dog, fish]
+
+ # oneOf no discriminator
+ Animal:
+ oneOf:
+ - $ref: '#/components/schemas/Cat'
+ - $ref: '#/components/schemas/Dog'
+
+ Cat:
+ type: object
+ required: [kind, meow]
+ properties:
+ kind:
+ type: string
+ enum: [cat]
+ meow:
+ type: string
+
+ Dog:
+ type: object
+ required: [kind, bark]
+ properties:
+ kind:
+ type: string
+ enum: [dog]
+ bark:
+ type: string
+
+ # anyOf no discriminator
+ Device:
+ anyOf:
+ - $ref: '#/components/schemas/Phone'
+ - $ref: '#/components/schemas/Laptop'
+
+ Phone:
+ type: object
+ required: [model, number]
+ properties:
+ model: { type: string }
+ number: { type: string }
+
+ Laptop:
+ type: object
+ required: [model, ramGb]
+ properties:
+ model: { type: string }
+ ramGb: { type: integer, format: int32 }
diff --git a/samples/client/petstore/kotlin-fix-double-serializable-annotation/.openapi-generator-ignore b/samples/client/petstore/kotlin-fix-double-serializable-annotation/.openapi-generator-ignore
new file mode 100644
index 000000000000..7484ee590a38
--- /dev/null
+++ b/samples/client/petstore/kotlin-fix-double-serializable-annotation/.openapi-generator-ignore
@@ -0,0 +1,23 @@
+# OpenAPI Generator Ignore
+# Generated by openapi-generator https://github.com/openapitools/openapi-generator
+
+# Use this file to prevent files from being overwritten by the generator.
+# The patterns follow closely to .gitignore or .dockerignore.
+
+# As an example, the C# client generator defines ApiClient.cs.
+# You can make changes and tell OpenAPI Generator to ignore just this file by uncommenting the following line:
+#ApiClient.cs
+
+# You can match any string of characters against a directory, file or extension with a single asterisk (*):
+#foo/*/qux
+# The above matches foo/bar/qux and foo/baz/qux, but not foo/bar/baz/qux
+
+# You can recursively match patterns against a directory, file or extension with a double asterisk (**):
+#foo/**/qux
+# This matches foo/bar/qux, foo/baz/qux, and foo/bar/baz/qux
+
+# You can also negate patterns with an exclamation (!).
+# For example, you can ignore all files in a docs folder with the file extension .md:
+#docs/*.md
+# Then explicitly reverse the ignore rule for a single file:
+#!docs/README.md
diff --git a/samples/client/petstore/kotlin-fix-double-serializable-annotation/.openapi-generator/FILES b/samples/client/petstore/kotlin-fix-double-serializable-annotation/.openapi-generator/FILES
new file mode 100644
index 000000000000..b8b250a11998
--- /dev/null
+++ b/samples/client/petstore/kotlin-fix-double-serializable-annotation/.openapi-generator/FILES
@@ -0,0 +1,46 @@
+.openapi-generator-ignore
+README.md
+build.gradle.kts
+docs/Animal.md
+docs/Cat.md
+docs/Device.md
+docs/Dog.md
+docs/Laptop.md
+docs/Pet.md
+docs/PetKind.md
+docs/Phone.md
+gradle/wrapper/gradle-wrapper.jar
+gradle/wrapper/gradle-wrapper.properties
+gradlew
+gradlew.bat
+settings.gradle.kts
+src/commonMain/kotlin/org/openapitools/client/auth/ApiKeyAuth.kt
+src/commonMain/kotlin/org/openapitools/client/auth/Authentication.kt
+src/commonMain/kotlin/org/openapitools/client/auth/HttpBasicAuth.kt
+src/commonMain/kotlin/org/openapitools/client/auth/HttpBearerAuth.kt
+src/commonMain/kotlin/org/openapitools/client/auth/OAuth.kt
+src/commonMain/kotlin/org/openapitools/client/infrastructure/ApiAbstractions.kt
+src/commonMain/kotlin/org/openapitools/client/infrastructure/ApiClient.kt
+src/commonMain/kotlin/org/openapitools/client/infrastructure/Base64ByteArray.kt
+src/commonMain/kotlin/org/openapitools/client/infrastructure/Bytes.kt
+src/commonMain/kotlin/org/openapitools/client/infrastructure/HttpResponse.kt
+src/commonMain/kotlin/org/openapitools/client/infrastructure/OctetByteArray.kt
+src/commonMain/kotlin/org/openapitools/client/infrastructure/PartConfig.kt
+src/commonMain/kotlin/org/openapitools/client/infrastructure/RequestConfig.kt
+src/commonMain/kotlin/org/openapitools/client/infrastructure/RequestMethod.kt
+src/commonMain/kotlin/org/openapitools/client/models/Animal.kt
+src/commonMain/kotlin/org/openapitools/client/models/Cat.kt
+src/commonMain/kotlin/org/openapitools/client/models/Device.kt
+src/commonMain/kotlin/org/openapitools/client/models/Dog.kt
+src/commonMain/kotlin/org/openapitools/client/models/Laptop.kt
+src/commonMain/kotlin/org/openapitools/client/models/Pet.kt
+src/commonMain/kotlin/org/openapitools/client/models/PetKind.kt
+src/commonMain/kotlin/org/openapitools/client/models/Phone.kt
+src/test/kotlin/org/openapitools/client/models/AnimalTest.kt
+src/test/kotlin/org/openapitools/client/models/CatTest.kt
+src/test/kotlin/org/openapitools/client/models/DeviceTest.kt
+src/test/kotlin/org/openapitools/client/models/DogTest.kt
+src/test/kotlin/org/openapitools/client/models/LaptopTest.kt
+src/test/kotlin/org/openapitools/client/models/PetKindTest.kt
+src/test/kotlin/org/openapitools/client/models/PetTest.kt
+src/test/kotlin/org/openapitools/client/models/PhoneTest.kt
diff --git a/samples/client/petstore/kotlin-fix-double-serializable-annotation/.openapi-generator/VERSION b/samples/client/petstore/kotlin-fix-double-serializable-annotation/.openapi-generator/VERSION
new file mode 100644
index 000000000000..5e5282953086
--- /dev/null
+++ b/samples/client/petstore/kotlin-fix-double-serializable-annotation/.openapi-generator/VERSION
@@ -0,0 +1 @@
+7.16.0-SNAPSHOT
diff --git a/samples/client/petstore/kotlin-fix-double-serializable-annotation/README.md b/samples/client/petstore/kotlin-fix-double-serializable-annotation/README.md
new file mode 100644
index 000000000000..25dda88ea8ea
--- /dev/null
+++ b/samples/client/petstore/kotlin-fix-double-serializable-annotation/README.md
@@ -0,0 +1,58 @@
+# org.openapitools.client - Kotlin client library for demo
+
+No description provided (generated by Openapi Generator https://github.com/openapitools/openapi-generator)
+
+## Overview
+This API client was generated by the [OpenAPI Generator](https://openapi-generator.tech) project. By using the [openapi-spec](https://github.com/OAI/OpenAPI-Specification) from a remote server, you can easily generate an API client.
+
+- API version: 1.0.0
+- Package version:
+- Generator version: 7.16.0-SNAPSHOT
+- Build package: org.openapitools.codegen.languages.KotlinClientCodegen
+
+## Requires
+
+* Kotlin 1.5.10
+
+## Build
+
+```
+./gradlew check assemble
+```
+
+This runs all tests and packages the library.
+
+## Features/Implementation Notes
+
+* Supports JSON inputs/outputs, File inputs, and Form inputs.
+* Supports collection formats for query parameters: csv, tsv, ssv, pipes.
+* Some Kotlin and Java types are fully qualified to avoid conflicts with types defined in OpenAPI definitions.
+
+
+
+## Documentation for API Endpoints
+
+All URIs are relative to *http://localhost*
+
+| Class | Method | HTTP request | Description |
+| ------------ | ------------- | ------------- | ------------- |
+
+
+
+## Documentation for Models
+
+ - [org.openapitools.client.models.Animal](docs/Animal.md)
+ - [org.openapitools.client.models.Cat](docs/Cat.md)
+ - [org.openapitools.client.models.Device](docs/Device.md)
+ - [org.openapitools.client.models.Dog](docs/Dog.md)
+ - [org.openapitools.client.models.Laptop](docs/Laptop.md)
+ - [org.openapitools.client.models.Pet](docs/Pet.md)
+ - [org.openapitools.client.models.PetKind](docs/PetKind.md)
+ - [org.openapitools.client.models.Phone](docs/Phone.md)
+
+
+
+## Documentation for Authorization
+
+Endpoints do not require authorization.
+
diff --git a/samples/client/petstore/kotlin-fix-double-serializable-annotation/build.gradle.kts b/samples/client/petstore/kotlin-fix-double-serializable-annotation/build.gradle.kts
new file mode 100644
index 000000000000..c18e8595dfca
--- /dev/null
+++ b/samples/client/petstore/kotlin-fix-double-serializable-annotation/build.gradle.kts
@@ -0,0 +1,95 @@
+import org.jetbrains.kotlin.gradle.plugin.mpp.KotlinNativeTarget
+
+plugins {
+ kotlin("multiplatform") version "2.1.21" // kotlin_version
+ kotlin("plugin.serialization") version "2.1.21" // kotlin_version
+}
+
+group = "org.openapitools"
+version = "1.0.0"
+
+val kotlin_version = "2.1.21"
+val coroutines_version = "1.10.2"
+val serialization_version = "1.8.1"
+val ktor_version = "3.1.3"
+
+repositories {
+ mavenCentral()
+}
+
+kotlin {
+ jvm()
+ iosX64()
+ iosArm64()
+ iosSimulatorArm64()
+ js {
+ browser()
+ nodejs()
+ }
+
+ sourceSets {
+ commonMain {
+ dependencies {
+ implementation("org.jetbrains.kotlinx:kotlinx-coroutines-core:$coroutines_version")
+ implementation("org.jetbrains.kotlinx:kotlinx-serialization-core:$serialization_version")
+
+ api("io.ktor:ktor-client-core:$ktor_version")
+ api("io.ktor:ktor-client-serialization:$ktor_version")
+ api("io.ktor:ktor-client-content-negotiation:$ktor_version")
+ api("io.ktor:ktor-serialization-kotlinx-json:$ktor_version")
+
+ api("org.jetbrains.kotlinx:kotlinx-datetime:0.6.2")
+ }
+ }
+
+ commonTest {
+ dependencies {
+ implementation(kotlin("test"))
+ implementation("io.ktor:ktor-client-mock:$ktor_version")
+ }
+ }
+
+ jvmMain {
+ dependencies {
+ implementation(kotlin("stdlib-jdk7"))
+ implementation("io.ktor:ktor-client-cio-jvm:$ktor_version")
+ }
+ }
+
+ jvmTest {
+ dependencies {
+ implementation(kotlin("test-junit"))
+ }
+ }
+
+ iosMain {
+ dependencies {
+ api("io.ktor:ktor-client-ios:$ktor_version")
+ }
+ }
+
+ jsMain {
+ dependencies {
+ api("io.ktor:ktor-client-js:$ktor_version")
+ }
+ }
+ }
+}
+
+tasks {
+ register("iosTest") {
+ val device = project.findProperty("device")?.toString() ?: "iPhone 8"
+ dependsOn("linkDebugTestIosX64")
+ group = JavaBasePlugin.VERIFICATION_GROUP
+ description = "Execute unit tests on ${device} simulator"
+ doLast {
+ val binary = kotlin.targets.getByName("iosX64").binaries.getTest("DEBUG")
+ exec {
+ commandLine("xcrun", "simctl", "spawn", device, binary.outputFile)
+ }
+ }
+ }
+ register("test") {
+ dependsOn("allTests")
+ }
+}
diff --git a/samples/client/petstore/kotlin-fix-double-serializable-annotation/docs/Animal.md b/samples/client/petstore/kotlin-fix-double-serializable-annotation/docs/Animal.md
new file mode 100644
index 000000000000..8b789827f311
--- /dev/null
+++ b/samples/client/petstore/kotlin-fix-double-serializable-annotation/docs/Animal.md
@@ -0,0 +1,19 @@
+
+# Animal
+
+## Properties
+| Name | Type | Description | Notes |
+| ------------ | ------------- | ------------- | ------------- |
+| **kind** | [**inline**](#Kind) | | |
+| **meow** | **kotlin.String** | | |
+| **bark** | **kotlin.String** | | |
+
+
+
+## Enum: kind
+| Name | Value |
+| ---- | ----- |
+| kind | dog |
+
+
+
diff --git a/samples/client/petstore/kotlin-fix-double-serializable-annotation/docs/Cat.md b/samples/client/petstore/kotlin-fix-double-serializable-annotation/docs/Cat.md
new file mode 100644
index 000000000000..90778dd2b21b
--- /dev/null
+++ b/samples/client/petstore/kotlin-fix-double-serializable-annotation/docs/Cat.md
@@ -0,0 +1,18 @@
+
+# Cat
+
+## Properties
+| Name | Type | Description | Notes |
+| ------------ | ------------- | ------------- | ------------- |
+| **kind** | [**inline**](#Kind) | | |
+| **meow** | **kotlin.String** | | |
+
+
+
+## Enum: kind
+| Name | Value |
+| ---- | ----- |
+| kind | cat |
+
+
+
diff --git a/samples/client/petstore/kotlin-fix-double-serializable-annotation/docs/Device.md b/samples/client/petstore/kotlin-fix-double-serializable-annotation/docs/Device.md
new file mode 100644
index 000000000000..56e9af9276f5
--- /dev/null
+++ b/samples/client/petstore/kotlin-fix-double-serializable-annotation/docs/Device.md
@@ -0,0 +1,12 @@
+
+# Device
+
+## Properties
+| Name | Type | Description | Notes |
+| ------------ | ------------- | ------------- | ------------- |
+| **model** | **kotlin.String** | | |
+| **number** | **kotlin.String** | | |
+| **ramGb** | **kotlin.Int** | | |
+
+
+
diff --git a/samples/client/petstore/kotlin-fix-double-serializable-annotation/docs/Dog.md b/samples/client/petstore/kotlin-fix-double-serializable-annotation/docs/Dog.md
new file mode 100644
index 000000000000..801faee0a971
--- /dev/null
+++ b/samples/client/petstore/kotlin-fix-double-serializable-annotation/docs/Dog.md
@@ -0,0 +1,18 @@
+
+# Dog
+
+## Properties
+| Name | Type | Description | Notes |
+| ------------ | ------------- | ------------- | ------------- |
+| **kind** | [**inline**](#Kind) | | |
+| **bark** | **kotlin.String** | | |
+
+
+
+## Enum: kind
+| Name | Value |
+| ---- | ----- |
+| kind | dog |
+
+
+
diff --git a/samples/client/petstore/kotlin-fix-double-serializable-annotation/docs/Laptop.md b/samples/client/petstore/kotlin-fix-double-serializable-annotation/docs/Laptop.md
new file mode 100644
index 000000000000..f0f412aa77ba
--- /dev/null
+++ b/samples/client/petstore/kotlin-fix-double-serializable-annotation/docs/Laptop.md
@@ -0,0 +1,11 @@
+
+# Laptop
+
+## Properties
+| Name | Type | Description | Notes |
+| ------------ | ------------- | ------------- | ------------- |
+| **model** | **kotlin.String** | | |
+| **ramGb** | **kotlin.Int** | | |
+
+
+
diff --git a/samples/client/petstore/kotlin-fix-double-serializable-annotation/docs/Pet.md b/samples/client/petstore/kotlin-fix-double-serializable-annotation/docs/Pet.md
new file mode 100644
index 000000000000..b6478f58bfe1
--- /dev/null
+++ b/samples/client/petstore/kotlin-fix-double-serializable-annotation/docs/Pet.md
@@ -0,0 +1,12 @@
+
+# Pet
+
+## Properties
+| Name | Type | Description | Notes |
+| ------------ | ------------- | ------------- | ------------- |
+| **id** | **kotlin.String** | | |
+| **name** | **kotlin.String** | | |
+| **kind** | [**PetKind**](PetKind.md) | | |
+
+
+
diff --git a/samples/client/petstore/kotlin-fix-double-serializable-annotation/docs/PetKind.md b/samples/client/petstore/kotlin-fix-double-serializable-annotation/docs/PetKind.md
new file mode 100644
index 000000000000..dd47ca91b356
--- /dev/null
+++ b/samples/client/petstore/kotlin-fix-double-serializable-annotation/docs/PetKind.md
@@ -0,0 +1,14 @@
+
+# PetKind
+
+## Enum
+
+
+ * `cat` (value: `"cat"`)
+
+ * `dog` (value: `"dog"`)
+
+ * `fish` (value: `"fish"`)
+
+
+
diff --git a/samples/client/petstore/kotlin-fix-double-serializable-annotation/docs/Phone.md b/samples/client/petstore/kotlin-fix-double-serializable-annotation/docs/Phone.md
new file mode 100644
index 000000000000..7a5e45bbd24a
--- /dev/null
+++ b/samples/client/petstore/kotlin-fix-double-serializable-annotation/docs/Phone.md
@@ -0,0 +1,11 @@
+
+# Phone
+
+## Properties
+| Name | Type | Description | Notes |
+| ------------ | ------------- | ------------- | ------------- |
+| **model** | **kotlin.String** | | |
+| **number** | **kotlin.String** | | |
+
+
+
diff --git a/samples/client/petstore/kotlin-fix-double-serializable-annotation/gradle/wrapper/gradle-wrapper.jar b/samples/client/petstore/kotlin-fix-double-serializable-annotation/gradle/wrapper/gradle-wrapper.jar
new file mode 100644
index 000000000000..d64cd4917707
Binary files /dev/null and b/samples/client/petstore/kotlin-fix-double-serializable-annotation/gradle/wrapper/gradle-wrapper.jar differ
diff --git a/samples/client/petstore/kotlin-fix-double-serializable-annotation/gradle/wrapper/gradle-wrapper.properties b/samples/client/petstore/kotlin-fix-double-serializable-annotation/gradle/wrapper/gradle-wrapper.properties
new file mode 100644
index 000000000000..e7646dead063
--- /dev/null
+++ b/samples/client/petstore/kotlin-fix-double-serializable-annotation/gradle/wrapper/gradle-wrapper.properties
@@ -0,0 +1,7 @@
+distributionBase=GRADLE_USER_HOME
+distributionPath=wrapper/dists
+distributionUrl=https\://services.gradle.org/distributions/gradle-8.7-all.zip
+networkTimeout=10000
+validateDistributionUrl=true
+zipStoreBase=GRADLE_USER_HOME
+zipStorePath=wrapper/dists
diff --git a/samples/client/petstore/kotlin-fix-double-serializable-annotation/gradlew b/samples/client/petstore/kotlin-fix-double-serializable-annotation/gradlew
new file mode 100644
index 000000000000..9d0ce634cb11
--- /dev/null
+++ b/samples/client/petstore/kotlin-fix-double-serializable-annotation/gradlew
@@ -0,0 +1,249 @@
+#!/bin/sh
+
+#
+# Copyright © 2015-2021 the original authors.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+# https://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+
+##############################################################################
+#
+# Gradle start up script for POSIX generated by Gradle.
+#
+# Important for running:
+#
+# (1) You need a POSIX-compliant shell to run this script. If your /bin/sh is
+# noncompliant, but you have some other compliant shell such as ksh or
+# bash, then to run this script, type that shell name before the whole
+# command line, like:
+#
+# ksh Gradle
+#
+# Busybox and similar reduced shells will NOT work, because this script
+# requires all of these POSIX shell features:
+# * functions;
+# * expansions «$var», «${var}», «${var:-default}», «${var+SET}»,
+# «${var#prefix}», «${var%suffix}», and «$( cmd )»;
+# * compound commands having a testable exit status, especially «case»;
+# * various built-in commands including «command», «set», and «ulimit».
+#
+# Important for patching:
+#
+# (2) This script targets any POSIX shell, so it avoids extensions provided
+# by Bash, Ksh, etc; in particular arrays are avoided.
+#
+# The "traditional" practice of packing multiple parameters into a
+# space-separated string is a well documented source of bugs and security
+# problems, so this is (mostly) avoided, by progressively accumulating
+# options in "$@", and eventually passing that to Java.
+#
+# Where the inherited environment variables (DEFAULT_JVM_OPTS, JAVA_OPTS,
+# and GRADLE_OPTS) rely on word-splitting, this is performed explicitly;
+# see the in-line comments for details.
+#
+# There are tweaks for specific operating systems such as AIX, CygWin,
+# Darwin, MinGW, and NonStop.
+#
+# (3) This script is generated from the Groovy template
+# https://github.com/gradle/gradle/blob/HEAD/subprojects/plugins/src/main/resources/org/gradle/api/internal/plugins/unixStartScript.txt
+# within the Gradle project.
+#
+# You can find Gradle at https://github.com/gradle/gradle/.
+#
+##############################################################################
+
+# Attempt to set APP_HOME
+
+# Resolve links: $0 may be a link
+app_path=$0
+
+# Need this for daisy-chained symlinks.
+while
+APP_HOME=${app_path%"${app_path##*/}"} # leaves a trailing /; empty if no leading path
+[ -h "$app_path" ]
+do
+ls=$( ls -ld "$app_path" )
+link=${ls#*' -> '}
+case $link in #(
+/*) app_path=$link ;; #(
+*) app_path=$APP_HOME$link ;;
+esac
+done
+
+# This is normally unused
+# shellcheck disable=SC2034
+APP_BASE_NAME=${0##*/}
+# Discard cd standard output in case $CDPATH is set (https://github.com/gradle/gradle/issues/25036)
+APP_HOME=$( cd "${APP_HOME:-./}" > /dev/null && pwd -P ) || exit
+
+# Use the maximum available, or set MAX_FD != -1 to use that value.
+MAX_FD=maximum
+
+warn () {
+echo "$*"
+} >&2
+
+die () {
+echo
+echo "$*"
+echo
+exit 1
+} >&2
+
+# OS specific support (must be 'true' or 'false').
+cygwin=false
+msys=false
+darwin=false
+nonstop=false
+case "$( uname )" in #(
+CYGWIN* ) cygwin=true ;; #(
+Darwin* ) darwin=true ;; #(
+MSYS* | MINGW* ) msys=true ;; #(
+NONSTOP* ) nonstop=true ;;
+esac
+
+CLASSPATH=$APP_HOME/gradle/wrapper/gradle-wrapper.jar
+
+
+# Determine the Java command to use to start the JVM.
+if [ -n "$JAVA_HOME" ] ; then
+if [ -x "$JAVA_HOME/jre/sh/java" ] ; then
+# IBM's JDK on AIX uses strange locations for the executables
+JAVACMD=$JAVA_HOME/jre/sh/java
+else
+JAVACMD=$JAVA_HOME/bin/java
+fi
+if [ ! -x "$JAVACMD" ] ; then
+die "ERROR: JAVA_HOME is set to an invalid directory: $JAVA_HOME
+
+Please set the JAVA_HOME variable in your environment to match the
+location of your Java installation."
+fi
+else
+JAVACMD=java
+if ! command -v java >/dev/null 2>&1
+then
+die "ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH.
+
+Please set the JAVA_HOME variable in your environment to match the
+location of your Java installation."
+fi
+fi
+
+# Increase the maximum file descriptors if we can.
+if ! "$cygwin" && ! "$darwin" && ! "$nonstop" ; then
+case $MAX_FD in #(
+max*)
+# In POSIX sh, ulimit -H is undefined. That's why the result is checked to see if it worked.
+# shellcheck disable=SC2039,SC3045
+MAX_FD=$( ulimit -H -n ) ||
+warn "Could not query maximum file descriptor limit"
+esac
+case $MAX_FD in #(
+'' | soft) :;; #(
+*)
+# In POSIX sh, ulimit -n is undefined. That's why the result is checked to see if it worked.
+# shellcheck disable=SC2039,SC3045
+ulimit -n "$MAX_FD" ||
+warn "Could not set maximum file descriptor limit to $MAX_FD"
+esac
+fi
+
+# Collect all arguments for the java command, stacking in reverse order:
+# * args from the command line
+# * the main class name
+# * -classpath
+# * -D...appname settings
+# * --module-path (only if needed)
+# * DEFAULT_JVM_OPTS, JAVA_OPTS, and GRADLE_OPTS environment variables.
+
+# For Cygwin or MSYS, switch paths to Windows format before running java
+if "$cygwin" || "$msys" ; then
+APP_HOME=$( cygpath --path --mixed "$APP_HOME" )
+CLASSPATH=$( cygpath --path --mixed "$CLASSPATH" )
+
+JAVACMD=$( cygpath --unix "$JAVACMD" )
+
+# Now convert the arguments - kludge to limit ourselves to /bin/sh
+for arg do
+if
+case $arg in #(
+-*) false ;; # don't mess with options #(
+/?*) t=${arg#/} t=/${t%%/*} # looks like a POSIX filepath
+[ -e "$t" ] ;; #(
+*) false ;;
+esac
+then
+arg=$( cygpath --path --ignore --mixed "$arg" )
+fi
+# Roll the args list around exactly as many times as the number of
+# args, so each arg winds up back in the position where it started, but
+# possibly modified.
+#
+# NB: a `for` loop captures its iteration list before it begins, so
+# changing the positional parameters here affects neither the number of
+# iterations, nor the values presented in `arg`.
+shift # remove old arg
+set -- "$@" "$arg" # push replacement arg
+done
+fi
+
+
+# Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
+DEFAULT_JVM_OPTS='"-Xmx64m" "-Xms64m"'
+
+# Collect all arguments for the java command:
+# * DEFAULT_JVM_OPTS, JAVA_OPTS, JAVA_OPTS, and optsEnvironmentVar are not allowed to contain shell fragments,
+# and any embedded shellness will be escaped.
+# * For example: A user cannot expect ${Hostname} to be expanded, as it is an environment variable and will be
+# treated as '${Hostname}' itself on the command line.
+
+set -- \
+"-Dorg.gradle.appname=$APP_BASE_NAME" \
+-classpath "$CLASSPATH" \
+org.gradle.wrapper.GradleWrapperMain \
+"$@"
+
+# Stop when "xargs" is not available.
+if ! command -v xargs >/dev/null 2>&1
+then
+die "xargs is not available"
+fi
+
+# Use "xargs" to parse quoted args.
+#
+# With -n1 it outputs one arg per line, with the quotes and backslashes removed.
+#
+# In Bash we could simply go:
+#
+# readarray ARGS < <( xargs -n1 <<<"$var" ) &&
+# set -- "${ARGS[@]}" "$@"
+#
+# but POSIX shell has neither arrays nor command substitution, so instead we
+# post-process each arg (as a line of input to sed) to backslash-escape any
+# character that might be a shell metacharacter, then use eval to reverse
+# that process (while maintaining the separation between arguments), and wrap
+# the whole thing up as a single "set" statement.
+#
+# This will of course break if any of these variables contains a newline or
+# an unmatched quote.
+#
+
+eval "set -- $(
+printf '%s\n' "$DEFAULT_JVM_OPTS $JAVA_OPTS $GRADLE_OPTS" |
+xargs -n1 |
+sed ' s~[^-[:alnum:]+,./:=@_]~\\&~g; ' |
+tr '\n' ' '
+)" '"$@"'
+
+exec "$JAVACMD" "$@"
diff --git a/samples/client/petstore/kotlin-fix-double-serializable-annotation/gradlew.bat b/samples/client/petstore/kotlin-fix-double-serializable-annotation/gradlew.bat
new file mode 100644
index 000000000000..107acd32c4e6
--- /dev/null
+++ b/samples/client/petstore/kotlin-fix-double-serializable-annotation/gradlew.bat
@@ -0,0 +1,89 @@
+@rem
+@rem Copyright 2015 the original author or authors.
+@rem
+@rem Licensed under the Apache License, Version 2.0 (the "License");
+@rem you may not use this file except in compliance with the License.
+@rem You may obtain a copy of the License at
+@rem
+@rem https://www.apache.org/licenses/LICENSE-2.0
+@rem
+@rem Unless required by applicable law or agreed to in writing, software
+@rem distributed under the License is distributed on an "AS IS" BASIS,
+@rem WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+@rem See the License for the specific language governing permissions and
+@rem limitations under the License.
+@rem
+
+@if "%DEBUG%" == "" @echo off
+@rem ##########################################################################
+@rem
+@rem Gradle startup script for Windows
+@rem
+@rem ##########################################################################
+
+@rem Set local scope for the variables with windows NT shell
+if "%OS%"=="Windows_NT" setlocal
+
+set DIRNAME=%~dp0
+if "%DIRNAME%" == "" set DIRNAME=.
+set APP_BASE_NAME=%~n0
+set APP_HOME=%DIRNAME%
+
+@rem Resolve any "." and ".." in APP_HOME to make it shorter.
+for %%i in ("%APP_HOME%") do set APP_HOME=%%~fi
+
+@rem Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
+set DEFAULT_JVM_OPTS="-Xmx64m" "-Xms64m"
+
+@rem Find java.exe
+if defined JAVA_HOME goto findJavaFromJavaHome
+
+set JAVA_EXE=java.exe
+%JAVA_EXE% -version >NUL 2>&1
+if "%ERRORLEVEL%" == "0" goto execute
+
+echo.
+echo ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH.
+echo.
+echo Please set the JAVA_HOME variable in your environment to match the
+echo location of your Java installation.
+
+goto fail
+
+:findJavaFromJavaHome
+set JAVA_HOME=%JAVA_HOME:"=%
+set JAVA_EXE=%JAVA_HOME%/bin/java.exe
+
+if exist "%JAVA_EXE%" goto execute
+
+echo.
+echo ERROR: JAVA_HOME is set to an invalid directory: %JAVA_HOME%
+echo.
+echo Please set the JAVA_HOME variable in your environment to match the
+echo location of your Java installation.
+
+goto fail
+
+:execute
+@rem Setup the command line
+
+set CLASSPATH=%APP_HOME%\gradle\wrapper\gradle-wrapper.jar
+
+
+@rem Execute Gradle
+"%JAVA_EXE%" %DEFAULT_JVM_OPTS% %JAVA_OPTS% %GRADLE_OPTS% "-Dorg.gradle.appname=%APP_BASE_NAME%" -classpath "%CLASSPATH%" org.gradle.wrapper.GradleWrapperMain %*
+
+:end
+@rem End local scope for the variables with windows NT shell
+if "%ERRORLEVEL%"=="0" goto mainEnd
+
+:fail
+rem Set variable GRADLE_EXIT_CONSOLE if you need the _script_ return code instead of
+rem the _cmd.exe /c_ return code!
+if not "" == "%GRADLE_EXIT_CONSOLE%" exit 1
+exit /b 1
+
+:mainEnd
+if "%OS%"=="Windows_NT" endlocal
+
+:omega
diff --git a/samples/client/petstore/kotlin-fix-double-serializable-annotation/settings.gradle.kts b/samples/client/petstore/kotlin-fix-double-serializable-annotation/settings.gradle.kts
new file mode 100644
index 000000000000..90b39979b36f
--- /dev/null
+++ b/samples/client/petstore/kotlin-fix-double-serializable-annotation/settings.gradle.kts
@@ -0,0 +1 @@
+rootProject.name = "kotlin-client"
diff --git a/samples/client/petstore/kotlin-fix-double-serializable-annotation/src/commonMain/kotlin/org/openapitools/client/auth/ApiKeyAuth.kt b/samples/client/petstore/kotlin-fix-double-serializable-annotation/src/commonMain/kotlin/org/openapitools/client/auth/ApiKeyAuth.kt
new file mode 100644
index 000000000000..8bd8b59a8f82
--- /dev/null
+++ b/samples/client/petstore/kotlin-fix-double-serializable-annotation/src/commonMain/kotlin/org/openapitools/client/auth/ApiKeyAuth.kt
@@ -0,0 +1,16 @@
+package org.openapitools.client.auth
+
+class ApiKeyAuth(private val location: String, val paramName: String) : Authentication {
+ var apiKey: String? = null
+ var apiKeyPrefix: String? = null
+
+ override fun apply(query: MutableMap>, headers: MutableMap) {
+ val key: String = apiKey ?: return
+ val prefix: String? = apiKeyPrefix
+ val value: String = if (prefix != null) "$prefix $key" else key
+ when (location) {
+ "query" -> query[paramName] = listOf(value)
+ "header" -> headers[paramName] = value
+ }
+ }
+}
diff --git a/samples/client/petstore/kotlin-fix-double-serializable-annotation/src/commonMain/kotlin/org/openapitools/client/auth/Authentication.kt b/samples/client/petstore/kotlin-fix-double-serializable-annotation/src/commonMain/kotlin/org/openapitools/client/auth/Authentication.kt
new file mode 100644
index 000000000000..2c5dfb4acc56
--- /dev/null
+++ b/samples/client/petstore/kotlin-fix-double-serializable-annotation/src/commonMain/kotlin/org/openapitools/client/auth/Authentication.kt
@@ -0,0 +1,13 @@
+package org.openapitools.client.auth
+
+interface Authentication {
+
+ /**
+ * Apply authentication settings to header and query params.
+ *
+ * @param query Query parameters.
+ * @param headers Header parameters.
+ */
+ fun apply(query: MutableMap>, headers: MutableMap)
+
+}
diff --git a/samples/client/petstore/kotlin-fix-double-serializable-annotation/src/commonMain/kotlin/org/openapitools/client/auth/HttpBasicAuth.kt b/samples/client/petstore/kotlin-fix-double-serializable-annotation/src/commonMain/kotlin/org/openapitools/client/auth/HttpBasicAuth.kt
new file mode 100644
index 000000000000..7c4761bbd6f7
--- /dev/null
+++ b/samples/client/petstore/kotlin-fix-double-serializable-annotation/src/commonMain/kotlin/org/openapitools/client/auth/HttpBasicAuth.kt
@@ -0,0 +1,15 @@
+package org.openapitools.client.auth
+
+import io.ktor.util.encodeBase64
+
+class HttpBasicAuth : Authentication {
+ var username: String? = null
+ var password: String? = null
+
+ override fun apply(query: MutableMap>, headers: MutableMap) {
+ if (username == null && password == null) return
+ val str = (username ?: "") + ":" + (password ?: "")
+ val auth = str.encodeBase64()
+ headers["Authorization"] = "Basic $auth"
+ }
+}
diff --git a/samples/client/petstore/kotlin-fix-double-serializable-annotation/src/commonMain/kotlin/org/openapitools/client/auth/HttpBearerAuth.kt b/samples/client/petstore/kotlin-fix-double-serializable-annotation/src/commonMain/kotlin/org/openapitools/client/auth/HttpBearerAuth.kt
new file mode 100644
index 000000000000..a6fb285af5c3
--- /dev/null
+++ b/samples/client/petstore/kotlin-fix-double-serializable-annotation/src/commonMain/kotlin/org/openapitools/client/auth/HttpBearerAuth.kt
@@ -0,0 +1,14 @@
+package org.openapitools.client.auth
+
+class HttpBearerAuth(private val scheme: String?) : Authentication {
+ var bearerToken: String? = null
+
+ override fun apply(query: MutableMap>, headers: MutableMap) {
+ val token: String = bearerToken ?: return
+ headers["Authorization"] = (if (scheme != null) upperCaseBearer(scheme)!! + " " else "") + token
+ }
+
+ private fun upperCaseBearer(scheme: String): String? {
+ return if ("bearer".equals(scheme, ignoreCase = true)) "Bearer" else scheme
+ }
+}
diff --git a/samples/client/petstore/kotlin-fix-double-serializable-annotation/src/commonMain/kotlin/org/openapitools/client/auth/OAuth.kt b/samples/client/petstore/kotlin-fix-double-serializable-annotation/src/commonMain/kotlin/org/openapitools/client/auth/OAuth.kt
new file mode 100644
index 000000000000..0e8f30f39383
--- /dev/null
+++ b/samples/client/petstore/kotlin-fix-double-serializable-annotation/src/commonMain/kotlin/org/openapitools/client/auth/OAuth.kt
@@ -0,0 +1,10 @@
+package org.openapitools.client.auth
+
+class OAuth : Authentication {
+ var accessToken: String? = null
+
+ override fun apply(query: MutableMap>, headers: MutableMap) {
+ val token: String = accessToken ?: return
+ headers["Authorization"] = "Bearer $token"
+ }
+}
diff --git a/samples/client/petstore/kotlin-fix-double-serializable-annotation/src/commonMain/kotlin/org/openapitools/client/infrastructure/ApiAbstractions.kt b/samples/client/petstore/kotlin-fix-double-serializable-annotation/src/commonMain/kotlin/org/openapitools/client/infrastructure/ApiAbstractions.kt
new file mode 100644
index 000000000000..7fe8da468374
--- /dev/null
+++ b/samples/client/petstore/kotlin-fix-double-serializable-annotation/src/commonMain/kotlin/org/openapitools/client/infrastructure/ApiAbstractions.kt
@@ -0,0 +1,23 @@
+package org.openapitools.client.infrastructure
+
+typealias MultiValueMap = MutableMap>
+
+fun collectionDelimiter(collectionFormat: String): String = when(collectionFormat) {
+ "csv" -> ","
+ "tsv" -> "\t"
+ "pipe" -> "|"
+ "space" -> " "
+ else -> ""
+}
+
+val defaultMultiValueConverter: (item: Any?) -> String = { item -> "$item" }
+
+fun toMultiValue(items: Array, collectionFormat: String, map: (item: T) -> String = defaultMultiValueConverter): List
+ = toMultiValue(items.asIterable(), collectionFormat, map)
+
+fun toMultiValue(items: Iterable, collectionFormat: String, map: (item: T) -> String = defaultMultiValueConverter): List {
+ return when(collectionFormat) {
+ "multi" -> items.map(map)
+ else -> listOf(items.joinToString(separator = collectionDelimiter(collectionFormat), transform = map))
+ }
+}
diff --git a/samples/client/petstore/kotlin-fix-double-serializable-annotation/src/commonMain/kotlin/org/openapitools/client/infrastructure/ApiClient.kt b/samples/client/petstore/kotlin-fix-double-serializable-annotation/src/commonMain/kotlin/org/openapitools/client/infrastructure/ApiClient.kt
new file mode 100644
index 000000000000..081b4b08c51f
--- /dev/null
+++ b/samples/client/petstore/kotlin-fix-double-serializable-annotation/src/commonMain/kotlin/org/openapitools/client/infrastructure/ApiClient.kt
@@ -0,0 +1,188 @@
+package org.openapitools.client.infrastructure
+
+import io.ktor.client.HttpClient
+import io.ktor.client.HttpClientConfig
+import io.ktor.client.engine.HttpClientEngine
+import io.ktor.client.plugins.contentnegotiation.ContentNegotiation
+import io.ktor.client.request.*
+import io.ktor.client.request.forms.FormDataContent
+import io.ktor.client.request.forms.MultiPartFormDataContent
+import io.ktor.client.request.header
+import io.ktor.client.request.parameter
+import io.ktor.client.statement.HttpResponse
+import io.ktor.http.ContentType
+import io.ktor.serialization.kotlinx.json.json
+import io.ktor.http.*
+import io.ktor.http.content.PartData
+import io.ktor.http.contentType
+import kotlin.Unit
+import kotlinx.serialization.json.Json
+
+import org.openapitools.client.auth.*
+
+open class ApiClient(
+ private val baseUrl: String
+) {
+
+ private lateinit var client: HttpClient
+
+ constructor(
+ baseUrl: String,
+ httpClientEngine: HttpClientEngine?,
+ httpClientConfig: ((HttpClientConfig<*>) -> Unit)? = null,
+ jsonBlock: Json,
+ ) : this(baseUrl = baseUrl) {
+ val clientConfig: (HttpClientConfig<*>) -> Unit by lazy {
+ {
+ it.install(ContentNegotiation) { json(jsonBlock) }
+ httpClientConfig?.invoke(it)
+ }
+ }
+
+ client = httpClientEngine?.let { HttpClient(it, clientConfig) } ?: HttpClient(clientConfig)
+ }
+
+ constructor(
+ baseUrl: String,
+ httpClient: HttpClient
+ ): this(baseUrl = baseUrl) {
+ this.client = httpClient
+ }
+
+ private val authentications: kotlin.collections.Map? = null
+
+ companion object {
+ const val BASE_URL: String = "http://localhost"
+ val JSON_DEFAULT: Json = Json {
+ ignoreUnknownKeys = true
+ prettyPrint = true
+ isLenient = true
+ }
+ protected val UNSAFE_HEADERS: List = listOf(HttpHeaders.ContentType)
+ }
+
+ /**
+ * Set the username for the first HTTP basic authentication.
+ *
+ * @param username Username
+ */
+ fun setUsername(username: String) {
+ val auth = authentications?.values?.firstOrNull { it is HttpBasicAuth } as HttpBasicAuth?
+ ?: throw Exception("No HTTP basic authentication configured")
+ auth.username = username
+ }
+
+ /**
+ * Set the password for the first HTTP basic authentication.
+ *
+ * @param password Password
+ */
+ fun setPassword(password: String) {
+ val auth = authentications?.values?.firstOrNull { it is HttpBasicAuth } as HttpBasicAuth?
+ ?: throw Exception("No HTTP basic authentication configured")
+ auth.password = password
+ }
+
+ /**
+ * Set the API key value for the first API key authentication.
+ *
+ * @param apiKey API key
+ * @param paramName The name of the API key parameter, or null or set the first key.
+ */
+ fun setApiKey(apiKey: String, paramName: String? = null) {
+ val auth = authentications?.values?.firstOrNull { it is ApiKeyAuth && (paramName == null || paramName == it.paramName)} as ApiKeyAuth?
+ ?: throw Exception("No API key authentication configured")
+ auth.apiKey = apiKey
+ }
+
+ /**
+ * Set the API key prefix for the first API key authentication.
+ *
+ * @param apiKeyPrefix API key prefix
+ * @param paramName The name of the API key parameter, or null or set the first key.
+ */
+ fun setApiKeyPrefix(apiKeyPrefix: String, paramName: String? = null) {
+ val auth = authentications?.values?.firstOrNull { it is ApiKeyAuth && (paramName == null || paramName == it.paramName) } as ApiKeyAuth?
+ ?: throw Exception("No API key authentication configured")
+ auth.apiKeyPrefix = apiKeyPrefix
+ }
+
+ /**
+ * Set the access token for the first OAuth2 authentication.
+ *
+ * @param accessToken Access token
+ */
+ fun setAccessToken(accessToken: String) {
+ val auth = authentications?.values?.firstOrNull { it is OAuth } as OAuth?
+ ?: throw Exception("No OAuth2 authentication configured")
+ auth.accessToken = accessToken
+ }
+
+ /**
+ * Set the access token for the first Bearer authentication.
+ *
+ * @param bearerToken The bearer token.
+ */
+ fun setBearerToken(bearerToken: String) {
+ val auth = authentications?.values?.firstOrNull { it is HttpBearerAuth } as HttpBearerAuth?
+ ?: throw Exception("No Bearer authentication configured")
+ auth.bearerToken = bearerToken
+ }
+
+ protected suspend fun multipartFormRequest(requestConfig: RequestConfig, body: kotlin.collections.List?, authNames: kotlin.collections.List): HttpResponse {
+ return request(requestConfig, MultiPartFormDataContent(body ?: listOf()), authNames)
+ }
+
+ protected suspend fun urlEncodedFormRequest(requestConfig: RequestConfig, body: Parameters?, authNames: kotlin.collections.List): HttpResponse {
+ return request(requestConfig, FormDataContent(body ?: Parameters.Empty), authNames)
+ }
+
+ protected suspend fun jsonRequest(requestConfig: RequestConfig, body: Any? = null, authNames: kotlin.collections.List): HttpResponse = request(requestConfig, body, authNames)
+
+ protected suspend fun request(requestConfig: RequestConfig, body: Any? = null, authNames: kotlin.collections.List): HttpResponse {
+ requestConfig.updateForAuth(authNames)
+ val headers = requestConfig.headers
+
+ return client.request {
+ this.url {
+ this.takeFrom(URLBuilder(baseUrl))
+ appendPath(requestConfig.path.trimStart('/').split('/'))
+ requestConfig.query.forEach { query ->
+ query.value.forEach { value ->
+ parameter(query.key, value)
+ }
+ }
+ }
+ this.method = requestConfig.method.httpMethod
+ headers.filter { header -> !UNSAFE_HEADERS.contains(header.key) }.forEach { header -> this.header(header.key, header.value) }
+ if (requestConfig.method in listOf(RequestMethod.PUT, RequestMethod.POST, RequestMethod.PATCH)) {
+ val contentType = (requestConfig.headers[HttpHeaders.ContentType]?.let { ContentType.parse(it) }
+ ?: ContentType.Application.Json)
+ this.contentType(contentType)
+ this.setBody(body)
+ }
+ }
+ }
+
+ private fun RequestConfig.updateForAuth(authNames: kotlin.collections.List) {
+ for (authName in authNames) {
+ val auth = authentications?.get(authName) ?: throw Exception("Authentication undefined: $authName")
+ auth.apply(query, headers)
+ }
+ }
+
+ private fun URLBuilder.appendPath(components: kotlin.collections.List): URLBuilder = apply {
+ encodedPath = encodedPath.trimEnd('/') + components.joinToString("/", prefix = "/") { it.encodeURLQueryComponent() }
+ }
+
+ private val RequestMethod.httpMethod: HttpMethod
+ get() = when (this) {
+ RequestMethod.DELETE -> HttpMethod.Delete
+ RequestMethod.GET -> HttpMethod.Get
+ RequestMethod.HEAD -> HttpMethod.Head
+ RequestMethod.PATCH -> HttpMethod.Patch
+ RequestMethod.PUT -> HttpMethod.Put
+ RequestMethod.POST -> HttpMethod.Post
+ RequestMethod.OPTIONS -> HttpMethod.Options
+ }
+}
diff --git a/samples/client/petstore/kotlin-fix-double-serializable-annotation/src/commonMain/kotlin/org/openapitools/client/infrastructure/Base64ByteArray.kt b/samples/client/petstore/kotlin-fix-double-serializable-annotation/src/commonMain/kotlin/org/openapitools/client/infrastructure/Base64ByteArray.kt
new file mode 100644
index 000000000000..743d6650085d
--- /dev/null
+++ b/samples/client/petstore/kotlin-fix-double-serializable-annotation/src/commonMain/kotlin/org/openapitools/client/infrastructure/Base64ByteArray.kt
@@ -0,0 +1,29 @@
+package org.openapitools.client.infrastructure
+
+import kotlinx.serialization.*
+import kotlinx.serialization.descriptors.*
+import kotlinx.serialization.encoding.*
+
+@Serializable(Base64ByteArray.Companion::class)
+class Base64ByteArray(val value: ByteArray) {
+ companion object : KSerializer {
+ override val descriptor: SerialDescriptor = PrimitiveSerialDescriptor("Base64ByteArray", PrimitiveKind.STRING)
+ override fun serialize(encoder: Encoder, value: Base64ByteArray): Unit = encoder.encodeString(value.value.encodeBase64())
+ override fun deserialize(decoder: Decoder): Base64ByteArray = Base64ByteArray(decoder.decodeString().decodeBase64Bytes())
+ }
+
+ override fun equals(other: Any?): Boolean {
+ if (this === other) return true
+ if (other == null || this::class != other::class) return false
+ other as Base64ByteArray
+ return value.contentEquals(other.value)
+ }
+
+ override fun hashCode(): Int {
+ return value.contentHashCode()
+ }
+
+ override fun toString(): String {
+ return "Base64ByteArray(${hex(value)})"
+ }
+}
diff --git a/samples/client/petstore/kotlin-fix-double-serializable-annotation/src/commonMain/kotlin/org/openapitools/client/infrastructure/Bytes.kt b/samples/client/petstore/kotlin-fix-double-serializable-annotation/src/commonMain/kotlin/org/openapitools/client/infrastructure/Bytes.kt
new file mode 100644
index 000000000000..fe511d948125
--- /dev/null
+++ b/samples/client/petstore/kotlin-fix-double-serializable-annotation/src/commonMain/kotlin/org/openapitools/client/infrastructure/Bytes.kt
@@ -0,0 +1,104 @@
+package org.openapitools.client.infrastructure
+
+import io.ktor.utils.io.core.*
+import kotlinx.io.Source
+import kotlinx.io.readByteArray
+import kotlin.experimental.and
+
+private val digits = "0123456789abcdef".toCharArray()
+private const val BASE64_ALPHABET = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/"
+private const val BASE64_MASK: Byte = 0x3f
+private const val BASE64_PAD = '='
+private val BASE64_INVERSE_ALPHABET = IntArray(256) { BASE64_ALPHABET.indexOf(it.toChar()) }
+
+private fun String.toCharArray(): CharArray = CharArray(length) { get(it) }
+private fun ByteArray.clearFrom(from: Int) = (from until size).forEach { this[it] = 0 }
+private fun Int.toBase64(): Char = BASE64_ALPHABET[this]
+private fun Byte.fromBase64(): Byte = BASE64_INVERSE_ALPHABET[toInt() and 0xff].toByte() and BASE64_MASK
+internal fun ByteArray.encodeBase64(): String = buildPacket { writeFully(this@encodeBase64) }.encodeBase64()
+internal fun String.decodeBase64Bytes(): ByteArray =
+ buildPacket { writeText(dropLastWhile { it == BASE64_PAD }) }.decodeBase64Bytes().readByteArray()
+
+/**
+ * Encode [bytes] as a HEX string with no spaces, newlines and `0x` prefixes.
+ *
+ * Taken from https://github.com/ktorio/ktor/blob/master/ktor-utils/common/src/io/ktor/util/Crypto.kt
+ */
+internal fun hex(bytes: ByteArray): String {
+ val result = CharArray(bytes.size * 2)
+ var resultIndex = 0
+ val digits = digits
+
+ for (element in bytes) {
+ val b = element.toInt() and 0xff
+ result[resultIndex++] = digits[b shr 4]
+ result[resultIndex++] = digits[b and 0x0f]
+ }
+
+ return result.concatToString()
+}
+
+/**
+ * Decode bytes from HEX string. It should be no spaces and `0x` prefixes.
+ *
+ * Taken from https://github.com/ktorio/ktor/blob/master/ktor-utils/common/src/io/ktor/util/Crypto.kt
+ */
+internal fun hex(s: String): ByteArray {
+ val result = ByteArray(s.length / 2)
+ for (idx in result.indices) {
+ val srcIdx = idx * 2
+ val high = s[srcIdx].toString().toInt(16) shl 4
+ val low = s[srcIdx + 1].toString().toInt(16)
+ result[idx] = (high or low).toByte()
+ }
+
+ return result
+}
+
+/**
+ * Encode [ByteReadPacket] in base64 format.
+ *
+ * Taken from https://github.com/ktorio/ktor/blob/424d1d2cfaa3281302c60af9500f738c8c2fc846/ktor-utils/common/src/io/ktor/util/Base64.kt
+ */
+private fun Source.encodeBase64(): String = buildString {
+ val data = ByteArray(3)
+ while (remaining > 0) {
+ val read = readAvailable(data)
+ data.clearFrom(read)
+
+ val padSize = (data.size - read) * 8 / 6
+ val chunk = ((data[0].toInt() and 0xFF) shl 16) or
+ ((data[1].toInt() and 0xFF) shl 8) or
+ (data[2].toInt() and 0xFF)
+
+ for (index in data.size downTo padSize) {
+ val char = (chunk shr (6 * index)) and BASE64_MASK.toInt()
+ append(char.toBase64())
+ }
+
+ repeat(padSize) { append(BASE64_PAD) }
+ }
+}
+
+/**
+ * Decode [ByteReadPacket] from base64 format
+ *
+ * Taken from https://github.com/ktorio/ktor/blob/424d1d2cfaa3281302c60af9500f738c8c2fc846/ktor-utils/common/src/io/ktor/util/Base64.kt
+ */
+@Suppress("DEPRECATION")
+private fun ByteReadPacket.decodeBase64Bytes(): Input = buildPacket {
+ val data = ByteArray(4)
+
+ while (remaining > 0) {
+ val read = readAvailable(data)
+
+ val chunk = data.foldIndexed(0) { index, result, current ->
+ result or (current.fromBase64().toInt() shl ((3 - index) * 6))
+ }
+
+ for (index in data.size - 2 downTo (data.size - read)) {
+ val origin = (chunk shr (8 * index)) and 0xff
+ writeByte(origin.toByte())
+ }
+ }
+}
diff --git a/samples/client/petstore/kotlin-fix-double-serializable-annotation/src/commonMain/kotlin/org/openapitools/client/infrastructure/HttpResponse.kt b/samples/client/petstore/kotlin-fix-double-serializable-annotation/src/commonMain/kotlin/org/openapitools/client/infrastructure/HttpResponse.kt
new file mode 100644
index 000000000000..4285d605ea62
--- /dev/null
+++ b/samples/client/petstore/kotlin-fix-double-serializable-annotation/src/commonMain/kotlin/org/openapitools/client/infrastructure/HttpResponse.kt
@@ -0,0 +1,51 @@
+package org.openapitools.client.infrastructure
+
+import io.ktor.http.Headers
+import io.ktor.http.isSuccess
+import io.ktor.util.reflect.TypeInfo
+import io.ktor.util.reflect.typeInfo
+
+open class HttpResponse(val response: io.ktor.client.statement.HttpResponse, val provider: BodyProvider) {
+ val status: Int = response.status.value
+ val success: Boolean = response.status.isSuccess()
+ val headers: Map> = response.headers.mapEntries()
+ suspend fun body(): T = provider.body(response)
+ suspend fun typedBody(type: TypeInfo): V = provider.typedBody(response, type)
+
+ companion object {
+ private fun Headers.mapEntries(): Map> {
+ val result = mutableMapOf>()
+ entries().forEach { result[it.key] = it.value }
+ return result
+ }
+ }
+}
+
+interface BodyProvider {
+ suspend fun body(response: io.ktor.client.statement.HttpResponse): T
+ suspend fun typedBody(response: io.ktor.client.statement.HttpResponse, type: TypeInfo): V
+}
+
+class TypedBodyProvider(private val type: TypeInfo) : BodyProvider {
+ @Suppress("UNCHECKED_CAST")
+ override suspend fun body(response: io.ktor.client.statement.HttpResponse): T =
+ response.call.body(type) as T
+
+ @Suppress("UNCHECKED_CAST")
+ override suspend fun typedBody(response: io.ktor.client.statement.HttpResponse, type: TypeInfo): V =
+ response.call.body(type) as V
+}
+
+class MappedBodyProvider(private val provider: BodyProvider, private val block: S.() -> T) : BodyProvider {
+ override suspend fun body(response: io.ktor.client.statement.HttpResponse): T =
+ block(provider.body(response))
+
+ override suspend fun typedBody(response: io.ktor.client.statement.HttpResponse, type: TypeInfo): V =
+ provider.typedBody(response, type)
+}
+
+inline fun io.ktor.client.statement.HttpResponse.wrap(): HttpResponse =
+ HttpResponse(this, TypedBodyProvider(typeInfo()))
+
+fun HttpResponse.map(block: T.() -> V): HttpResponse =
+ HttpResponse(response, MappedBodyProvider(provider, block))
diff --git a/samples/client/petstore/kotlin-fix-double-serializable-annotation/src/commonMain/kotlin/org/openapitools/client/infrastructure/OctetByteArray.kt b/samples/client/petstore/kotlin-fix-double-serializable-annotation/src/commonMain/kotlin/org/openapitools/client/infrastructure/OctetByteArray.kt
new file mode 100644
index 000000000000..215042551235
--- /dev/null
+++ b/samples/client/petstore/kotlin-fix-double-serializable-annotation/src/commonMain/kotlin/org/openapitools/client/infrastructure/OctetByteArray.kt
@@ -0,0 +1,29 @@
+package org.openapitools.client.infrastructure
+
+import kotlinx.serialization.*
+import kotlinx.serialization.descriptors.*
+import kotlinx.serialization.encoding.*
+
+@Serializable(OctetByteArray.Companion::class)
+class OctetByteArray(val value: ByteArray) {
+ companion object : KSerializer {
+ override val descriptor: SerialDescriptor = PrimitiveSerialDescriptor("OctetByteArray", PrimitiveKind.STRING)
+ override fun serialize(encoder: Encoder, value: OctetByteArray): Unit = encoder.encodeString(hex(value.value))
+ override fun deserialize(decoder: Decoder): OctetByteArray = OctetByteArray(hex(decoder.decodeString()))
+ }
+
+ override fun equals(other: Any?): Boolean {
+ if (this === other) return true
+ if (other == null || this::class != other::class) return false
+ other as OctetByteArray
+ return value.contentEquals(other.value)
+ }
+
+ override fun hashCode(): Int {
+ return value.contentHashCode()
+ }
+
+ override fun toString(): String {
+ return "OctetByteArray(${hex(value)})"
+ }
+}
diff --git a/samples/client/petstore/kotlin-fix-double-serializable-annotation/src/commonMain/kotlin/org/openapitools/client/infrastructure/PartConfig.kt b/samples/client/petstore/kotlin-fix-double-serializable-annotation/src/commonMain/kotlin/org/openapitools/client/infrastructure/PartConfig.kt
new file mode 100644
index 000000000000..be00e38fbaee
--- /dev/null
+++ b/samples/client/petstore/kotlin-fix-double-serializable-annotation/src/commonMain/kotlin/org/openapitools/client/infrastructure/PartConfig.kt
@@ -0,0 +1,11 @@
+package org.openapitools.client.infrastructure
+
+/**
+ * Defines a config object for a given part of a multi-part request.
+ * NOTE: Headers is a Map because rfc2616 defines
+ * multi-valued headers as csv-only.
+ */
+data class PartConfig(
+ val headers: MutableMap = mutableMapOf(),
+ val body: T? = null
+)
diff --git a/samples/client/petstore/kotlin-fix-double-serializable-annotation/src/commonMain/kotlin/org/openapitools/client/infrastructure/RequestConfig.kt b/samples/client/petstore/kotlin-fix-double-serializable-annotation/src/commonMain/kotlin/org/openapitools/client/infrastructure/RequestConfig.kt
new file mode 100644
index 000000000000..6578b9381b78
--- /dev/null
+++ b/samples/client/petstore/kotlin-fix-double-serializable-annotation/src/commonMain/kotlin/org/openapitools/client/infrastructure/RequestConfig.kt
@@ -0,0 +1,19 @@
+package org.openapitools.client.infrastructure
+
+/**
+ * Defines a config object for a given request.
+ * NOTE: This object doesn't include 'body' because it
+ * allows for caching of the constructed object
+ * for many request definitions.
+ * NOTE: Headers is a Map because rfc2616 defines
+ * multi-valued headers as csv-only.
+ */
+data class RequestConfig(
+ val method: RequestMethod,
+ val path: String,
+ val headers: MutableMap = mutableMapOf(),
+ val params: MutableMap = mutableMapOf(),
+ val query: MutableMap> = mutableMapOf(),
+ val requiresAuthentication: Boolean,
+ val body: T? = null
+)
diff --git a/samples/client/petstore/kotlin-fix-double-serializable-annotation/src/commonMain/kotlin/org/openapitools/client/infrastructure/RequestMethod.kt b/samples/client/petstore/kotlin-fix-double-serializable-annotation/src/commonMain/kotlin/org/openapitools/client/infrastructure/RequestMethod.kt
new file mode 100644
index 000000000000..beb56f07cdde
--- /dev/null
+++ b/samples/client/petstore/kotlin-fix-double-serializable-annotation/src/commonMain/kotlin/org/openapitools/client/infrastructure/RequestMethod.kt
@@ -0,0 +1,8 @@
+package org.openapitools.client.infrastructure
+
+/**
+ * Provides enumerated HTTP verbs
+ */
+enum class RequestMethod {
+ GET, DELETE, HEAD, OPTIONS, PATCH, POST, PUT
+}
diff --git a/samples/client/petstore/kotlin-fix-double-serializable-annotation/src/commonMain/kotlin/org/openapitools/client/models/Animal.kt b/samples/client/petstore/kotlin-fix-double-serializable-annotation/src/commonMain/kotlin/org/openapitools/client/models/Animal.kt
new file mode 100644
index 000000000000..9c951a6c0375
--- /dev/null
+++ b/samples/client/petstore/kotlin-fix-double-serializable-annotation/src/commonMain/kotlin/org/openapitools/client/models/Animal.kt
@@ -0,0 +1,149 @@
+/**
+ *
+ * Please note:
+ * This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * Do not edit this file manually.
+ *
+ */
+
+@file:Suppress(
+ "ArrayInDataClass",
+ "EnumEntryName",
+ "RemoveRedundantQualifierName",
+ "UnusedImport"
+)
+
+package org.openapitools.client.models
+
+import org.openapitools.client.models.Cat
+import org.openapitools.client.models.Dog
+
+import kotlinx.serialization.*
+import kotlinx.serialization.descriptors.*
+import kotlinx.serialization.encoding.*
+import java.io.IOException
+
+/**
+ *
+ *
+ */
+@Serializable
+
+data class Animal(var actualInstance: Any? = null) {
+
+ class CustomTypeAdapterFactory : TypeAdapterFactory {
+ override fun create(gson: Gson, type: TypeToken): TypeAdapter? {
+ if (!Animal::class.java.isAssignableFrom(type.rawType)) {
+ return null // this class only serializes 'Animal' and its subtypes
+ }
+ val elementAdapter = gson.getAdapter(JsonElement::class.java)
+ val adapterCat = gson.getDelegateAdapter(this, TypeToken.get(Cat::class.java))
+ val adapterDog = gson.getDelegateAdapter(this, TypeToken.get(Dog::class.java))
+
+ @Suppress("UNCHECKED_CAST")
+ return object : TypeAdapter() {
+ @Throws(IOException::class)
+ override fun write(out: JsonWriter,value: Animal?) {
+ if (value?.actualInstance == null) {
+ elementAdapter.write(out, null)
+ return
+ }
+
+ // check if the actual instance is of the type `Cat`
+ if (value.actualInstance is Cat) {
+ val element = adapterCat.toJsonTree(value.actualInstance as Cat?)
+ elementAdapter.write(out, element)
+ return
+ }
+ // check if the actual instance is of the type `Dog`
+ if (value.actualInstance is Dog) {
+ val element = adapterDog.toJsonTree(value.actualInstance as Dog?)
+ elementAdapter.write(out, element)
+ return
+ }
+ throw IOException("Failed to serialize as the type doesn't match oneOf schemas: Cat, Dog")
+ }
+
+ @Throws(IOException::class)
+ override fun read(jsonReader: JsonReader): Animal {
+ val jsonElement = elementAdapter.read(jsonReader)
+ var match = 0
+ val errorMessages = ArrayList()
+ var actualAdapter: TypeAdapter<*> = elementAdapter
+
+ // deserialize Cat
+ try {
+ // validate the JSON object to see if any exception is thrown
+ Cat.validateJsonElement(jsonElement)
+ actualAdapter = adapterCat
+ match++
+ //log.log(Level.FINER, "Input data matches schema 'Cat'")
+ } catch (e: Exception) {
+ // deserialization failed, continue
+ errorMessages.add(String.format("Deserialization for Cat failed with `%s`.", e.message))
+ //log.log(Level.FINER, "Input data does not match schema 'Cat'", e)
+ }
+ // deserialize Dog
+ try {
+ // validate the JSON object to see if any exception is thrown
+ Dog.validateJsonElement(jsonElement)
+ actualAdapter = adapterDog
+ match++
+ //log.log(Level.FINER, "Input data matches schema 'Dog'")
+ } catch (e: Exception) {
+ // deserialization failed, continue
+ errorMessages.add(String.format("Deserialization for Dog failed with `%s`.", e.message))
+ //log.log(Level.FINER, "Input data does not match schema 'Dog'", e)
+ }
+
+ if (match == 1) {
+ val ret = Animal()
+ ret.actualInstance = actualAdapter.fromJsonTree(jsonElement)
+ return ret
+ }
+
+ throw IOException(String.format("Failed deserialization for Animal: %d classes match result, expected 1. Detailed failure message for oneOf schemas: %s. JSON: %s", match, errorMessages, jsonElement.toString()))
+ }
+ }.nullSafe() as TypeAdapter
+ }
+ }
+
+ companion object {
+ /**
+ * Validates the JSON Element and throws an exception if issues found
+ *
+ * @param jsonElement JSON Element
+ * @throws IOException if the JSON Element is invalid with respect to Animal
+ */
+ @Throws(IOException::class)
+ fun validateJsonElement(jsonElement: JsonElement?) {
+ requireNotNull(jsonElement) {
+ "Provided json element must not be null"
+ }
+ var match = 0
+ val errorMessages = ArrayList()
+ // validate the json string with Cat
+ try {
+ // validate the JSON object to see if any exception is thrown
+ Cat.validateJsonElement(jsonElement)
+ match++
+ } catch (e: Exception) {
+ // Validation failed, continue
+ errorMessages.add(String.format("Validation for Cat failed with `%s`.", e.message))
+ }
+ // validate the json string with Dog
+ try {
+ // validate the JSON object to see if any exception is thrown
+ Dog.validateJsonElement(jsonElement)
+ match++
+ } catch (e: Exception) {
+ // Validation failed, continue
+ errorMessages.add(String.format("Validation for Dog failed with `%s`.", e.message))
+ }
+
+ if (match != 1) {
+ throw IOException(String.format("Failed validation for Animal: %d classes match result, expected 1. Detailed failure message for oneOf schemas: %s. JSON: %s", match, errorMessages, jsonElement.toString()))
+ }
+ }
+ }
+}
diff --git a/samples/client/petstore/kotlin-fix-double-serializable-annotation/src/commonMain/kotlin/org/openapitools/client/models/Cat.kt b/samples/client/petstore/kotlin-fix-double-serializable-annotation/src/commonMain/kotlin/org/openapitools/client/models/Cat.kt
new file mode 100644
index 000000000000..258aa7791c8e
--- /dev/null
+++ b/samples/client/petstore/kotlin-fix-double-serializable-annotation/src/commonMain/kotlin/org/openapitools/client/models/Cat.kt
@@ -0,0 +1,50 @@
+/**
+ *
+ * Please note:
+ * This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * Do not edit this file manually.
+ *
+ */
+
+@file:Suppress(
+ "ArrayInDataClass",
+ "EnumEntryName",
+ "RemoveRedundantQualifierName",
+ "UnusedImport"
+)
+
+package org.openapitools.client.models
+
+
+import kotlinx.serialization.*
+import kotlinx.serialization.descriptors.*
+import kotlinx.serialization.encoding.*
+
+/**
+ *
+ *
+ * @param kind
+ * @param meow
+ */
+@Serializable
+
+data class Cat (
+
+ @SerialName(value = "kind") @Required val kind: Cat.Kind,
+
+ @SerialName(value = "meow") @Required val meow: kotlin.String
+
+) {
+
+ /**
+ *
+ *
+ * Values: cat
+ */
+ @Serializable
+ enum class Kind(val value: kotlin.String) {
+ @SerialName(value = "cat") cat("cat");
+ }
+
+}
+
diff --git a/samples/client/petstore/kotlin-fix-double-serializable-annotation/src/commonMain/kotlin/org/openapitools/client/models/Device.kt b/samples/client/petstore/kotlin-fix-double-serializable-annotation/src/commonMain/kotlin/org/openapitools/client/models/Device.kt
new file mode 100644
index 000000000000..4a12ea800747
--- /dev/null
+++ b/samples/client/petstore/kotlin-fix-double-serializable-annotation/src/commonMain/kotlin/org/openapitools/client/models/Device.kt
@@ -0,0 +1,145 @@
+/**
+ *
+ * Please note:
+ * This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * Do not edit this file manually.
+ *
+ */
+
+@file:Suppress(
+ "ArrayInDataClass",
+ "EnumEntryName",
+ "RemoveRedundantQualifierName",
+ "UnusedImport"
+)
+
+package org.openapitools.client.models
+
+import org.openapitools.client.models.Laptop
+import org.openapitools.client.models.Phone
+
+import kotlinx.serialization.*
+import kotlinx.serialization.descriptors.*
+import kotlinx.serialization.encoding.*
+import java.io.IOException
+
+/**
+ *
+ *
+ */
+@Serializable
+
+data class Device(var actualInstance: Any? = null) {
+
+ class CustomTypeAdapterFactory : TypeAdapterFactory {
+ override fun create(gson: Gson, type: TypeToken): TypeAdapter? {
+ if (!Device::class.java.isAssignableFrom(type.rawType)) {
+ return null // this class only serializes 'Device' and its subtypes
+ }
+ val elementAdapter = gson.getAdapter(JsonElement::class.java)
+ val adapterPhone = gson.getDelegateAdapter(this, TypeToken.get(Phone::class.java))
+ val adapterLaptop = gson.getDelegateAdapter(this, TypeToken.get(Laptop::class.java))
+
+ @Suppress("UNCHECKED_CAST")
+ return object : TypeAdapter() {
+ @Throws(IOException::class)
+ override fun write(out: JsonWriter,value: Device?) {
+ if (value?.actualInstance == null) {
+ elementAdapter.write(out, null)
+ return
+ }
+
+ // check if the actual instance is of the type `Phone`
+ if (value.actualInstance is Phone) {
+ val element = adapterPhone.toJsonTree(value.actualInstance as Phone?)
+ elementAdapter.write(out, element)
+ return
+ }
+ // check if the actual instance is of the type `Laptop`
+ if (value.actualInstance is Laptop) {
+ val element = adapterLaptop.toJsonTree(value.actualInstance as Laptop?)
+ elementAdapter.write(out, element)
+ return
+ }
+ throw IOException("Failed to serialize as the type doesn't match anyOf schemas: Laptop, Phone")
+ }
+
+ @Throws(IOException::class)
+ override fun read(jsonReader: JsonReader): Device {
+ val jsonElement = elementAdapter.read(jsonReader)
+ val errorMessages = ArrayList()
+ var actualAdapter: TypeAdapter<*>
+ val ret = Device()
+
+ // deserialize Phone
+ try {
+ // validate the JSON object to see if any exception is thrown
+ Phone.validateJsonElement(jsonElement)
+ actualAdapter = adapterPhone
+ ret.actualInstance = actualAdapter.fromJsonTree(jsonElement)
+ return ret
+ //log.log(Level.FINER, "Input data matches schema 'Phone'")
+ } catch (e: Exception) {
+ // deserialization failed, continue
+ errorMessages.add(String.format("Deserialization for Phone failed with `%s`.", e.message))
+ //log.log(Level.FINER, "Input data does not match schema 'Phone'", e)
+ }
+ // deserialize Laptop
+ try {
+ // validate the JSON object to see if any exception is thrown
+ Laptop.validateJsonElement(jsonElement)
+ actualAdapter = adapterLaptop
+ ret.actualInstance = actualAdapter.fromJsonTree(jsonElement)
+ return ret
+ //log.log(Level.FINER, "Input data matches schema 'Laptop'")
+ } catch (e: Exception) {
+ // deserialization failed, continue
+ errorMessages.add(String.format("Deserialization for Laptop failed with `%s`.", e.message))
+ //log.log(Level.FINER, "Input data does not match schema 'Laptop'", e)
+ }
+
+ throw IOException(String.format("Failed deserialization for Device: no schema match result. Detailed failure message for anyOf schemas: %s. JSON: %s", errorMessages, jsonElement.toString()))
+ }
+ }.nullSafe() as TypeAdapter
+ }
+ }
+
+ companion object {
+ /**
+ * Validates the JSON Element and throws an exception if issues found
+ *
+ * @param jsonElement JSON Element
+ * @throws IOException if the JSON Element is invalid with respect to Device
+ */
+ @Throws(IOException::class)
+ fun validateJsonElement(jsonElement: JsonElement?) {
+ requireNotNull(jsonElement) {
+ "Provided json element must not be null"
+ }
+ var match = 0
+ val errorMessages = ArrayList()
+ // validate the json string with Phone
+ try {
+ // validate the JSON object to see if any exception is thrown
+ Phone.validateJsonElement(jsonElement)
+ match++
+ } catch (e: Exception) {
+ // Validation failed, continue
+ errorMessages.add(String.format("Validation for Phone failed with `%s`.", e.message))
+ }
+ // validate the json string with Laptop
+ try {
+ // validate the JSON object to see if any exception is thrown
+ Laptop.validateJsonElement(jsonElement)
+ match++
+ } catch (e: Exception) {
+ // Validation failed, continue
+ errorMessages.add(String.format("Validation for Laptop failed with `%s`.", e.message))
+ }
+
+ if (match != 1) {
+ throw IOException(String.format("Failed validation for Device: %d classes match result, expected 1. Detailed failure message for oneOf schemas: %s. JSON: %s", match, errorMessages, jsonElement.toString()))
+ }
+ }
+ }
+}
diff --git a/samples/client/petstore/kotlin-fix-double-serializable-annotation/src/commonMain/kotlin/org/openapitools/client/models/Dog.kt b/samples/client/petstore/kotlin-fix-double-serializable-annotation/src/commonMain/kotlin/org/openapitools/client/models/Dog.kt
new file mode 100644
index 000000000000..4bddbb9fd76f
--- /dev/null
+++ b/samples/client/petstore/kotlin-fix-double-serializable-annotation/src/commonMain/kotlin/org/openapitools/client/models/Dog.kt
@@ -0,0 +1,50 @@
+/**
+ *
+ * Please note:
+ * This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * Do not edit this file manually.
+ *
+ */
+
+@file:Suppress(
+ "ArrayInDataClass",
+ "EnumEntryName",
+ "RemoveRedundantQualifierName",
+ "UnusedImport"
+)
+
+package org.openapitools.client.models
+
+
+import kotlinx.serialization.*
+import kotlinx.serialization.descriptors.*
+import kotlinx.serialization.encoding.*
+
+/**
+ *
+ *
+ * @param kind
+ * @param bark
+ */
+@Serializable
+
+data class Dog (
+
+ @SerialName(value = "kind") @Required val kind: Dog.Kind,
+
+ @SerialName(value = "bark") @Required val bark: kotlin.String
+
+) {
+
+ /**
+ *
+ *
+ * Values: dog
+ */
+ @Serializable
+ enum class Kind(val value: kotlin.String) {
+ @SerialName(value = "dog") dog("dog");
+ }
+
+}
+
diff --git a/samples/client/petstore/kotlin-fix-double-serializable-annotation/src/commonMain/kotlin/org/openapitools/client/models/Laptop.kt b/samples/client/petstore/kotlin-fix-double-serializable-annotation/src/commonMain/kotlin/org/openapitools/client/models/Laptop.kt
new file mode 100644
index 000000000000..9bc9b06b963a
--- /dev/null
+++ b/samples/client/petstore/kotlin-fix-double-serializable-annotation/src/commonMain/kotlin/org/openapitools/client/models/Laptop.kt
@@ -0,0 +1,41 @@
+/**
+ *
+ * Please note:
+ * This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * Do not edit this file manually.
+ *
+ */
+
+@file:Suppress(
+ "ArrayInDataClass",
+ "EnumEntryName",
+ "RemoveRedundantQualifierName",
+ "UnusedImport"
+)
+
+package org.openapitools.client.models
+
+
+import kotlinx.serialization.*
+import kotlinx.serialization.descriptors.*
+import kotlinx.serialization.encoding.*
+
+/**
+ *
+ *
+ * @param model
+ * @param ramGb
+ */
+@Serializable
+
+data class Laptop (
+
+ @SerialName(value = "model") @Required val model: kotlin.String,
+
+ @SerialName(value = "ramGb") @Required val ramGb: kotlin.Int
+
+) {
+
+
+}
+
diff --git a/samples/client/petstore/kotlin-fix-double-serializable-annotation/src/commonMain/kotlin/org/openapitools/client/models/Pet.kt b/samples/client/petstore/kotlin-fix-double-serializable-annotation/src/commonMain/kotlin/org/openapitools/client/models/Pet.kt
new file mode 100644
index 000000000000..e7761ec55504
--- /dev/null
+++ b/samples/client/petstore/kotlin-fix-double-serializable-annotation/src/commonMain/kotlin/org/openapitools/client/models/Pet.kt
@@ -0,0 +1,45 @@
+/**
+ *
+ * Please note:
+ * This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * Do not edit this file manually.
+ *
+ */
+
+@file:Suppress(
+ "ArrayInDataClass",
+ "EnumEntryName",
+ "RemoveRedundantQualifierName",
+ "UnusedImport"
+)
+
+package org.openapitools.client.models
+
+import org.openapitools.client.models.PetKind
+
+import kotlinx.serialization.*
+import kotlinx.serialization.descriptors.*
+import kotlinx.serialization.encoding.*
+
+/**
+ *
+ *
+ * @param id
+ * @param name
+ * @param kind
+ */
+@Serializable
+
+data class Pet (
+
+ @SerialName(value = "id") @Required val id: kotlin.String,
+
+ @SerialName(value = "name") @Required val name: kotlin.String,
+
+ @SerialName(value = "kind") @Required val kind: PetKind
+
+) {
+
+
+}
+
diff --git a/samples/client/petstore/kotlin-fix-double-serializable-annotation/src/commonMain/kotlin/org/openapitools/client/models/PetKind.kt b/samples/client/petstore/kotlin-fix-double-serializable-annotation/src/commonMain/kotlin/org/openapitools/client/models/PetKind.kt
new file mode 100644
index 000000000000..16c5c920fbd5
--- /dev/null
+++ b/samples/client/petstore/kotlin-fix-double-serializable-annotation/src/commonMain/kotlin/org/openapitools/client/models/PetKind.kt
@@ -0,0 +1,65 @@
+/**
+ *
+ * Please note:
+ * This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * Do not edit this file manually.
+ *
+ */
+
+@file:Suppress(
+ "ArrayInDataClass",
+ "EnumEntryName",
+ "RemoveRedundantQualifierName",
+ "UnusedImport"
+)
+
+package org.openapitools.client.models
+
+
+import kotlinx.serialization.*
+
+/**
+ *
+ *
+ * Values: cat,dog,fish
+ */
+@Serializable
+enum class PetKind(val value: kotlin.String) {
+
+ @SerialName(value = "cat")
+ cat("cat"),
+
+ @SerialName(value = "dog")
+ dog("dog"),
+
+ @SerialName(value = "fish")
+ fish("fish");
+
+ /**
+ * Override [toString()] to avoid using the enum variable name as the value, and instead use
+ * the actual value defined in the API spec file.
+ *
+ * This solves a problem when the variable name and its value are different, and ensures that
+ * the client sends the correct enum values to the server always.
+ */
+ override fun toString(): kotlin.String = value
+
+ companion object {
+ /**
+ * Converts the provided [data] to a [String] on success, null otherwise.
+ */
+ fun encode(data: kotlin.Any?): kotlin.String? = if (data is PetKind) "$data" else null
+
+ /**
+ * Returns a valid [PetKind] for [data], null otherwise.
+ */
+ fun decode(data: kotlin.Any?): PetKind? = data?.let {
+ val normalizedData = "$it".lowercase()
+ values().firstOrNull { value ->
+ it == value || normalizedData == "$value".lowercase()
+ }
+ }
+ }
+}
+
+
diff --git a/samples/client/petstore/kotlin-fix-double-serializable-annotation/src/commonMain/kotlin/org/openapitools/client/models/Phone.kt b/samples/client/petstore/kotlin-fix-double-serializable-annotation/src/commonMain/kotlin/org/openapitools/client/models/Phone.kt
new file mode 100644
index 000000000000..c1fc4f89ef09
--- /dev/null
+++ b/samples/client/petstore/kotlin-fix-double-serializable-annotation/src/commonMain/kotlin/org/openapitools/client/models/Phone.kt
@@ -0,0 +1,41 @@
+/**
+ *
+ * Please note:
+ * This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * Do not edit this file manually.
+ *
+ */
+
+@file:Suppress(
+ "ArrayInDataClass",
+ "EnumEntryName",
+ "RemoveRedundantQualifierName",
+ "UnusedImport"
+)
+
+package org.openapitools.client.models
+
+
+import kotlinx.serialization.*
+import kotlinx.serialization.descriptors.*
+import kotlinx.serialization.encoding.*
+
+/**
+ *
+ *
+ * @param model
+ * @param number
+ */
+@Serializable
+
+data class Phone (
+
+ @SerialName(value = "model") @Required val model: kotlin.String,
+
+ @SerialName(value = "number") @Required val number: kotlin.String
+
+) {
+
+
+}
+
diff --git a/samples/client/petstore/kotlin-fix-double-serializable-annotation/src/test/kotlin/org/openapitools/client/models/AnimalTest.kt b/samples/client/petstore/kotlin-fix-double-serializable-annotation/src/test/kotlin/org/openapitools/client/models/AnimalTest.kt
new file mode 100644
index 000000000000..76d3b5f48df5
--- /dev/null
+++ b/samples/client/petstore/kotlin-fix-double-serializable-annotation/src/test/kotlin/org/openapitools/client/models/AnimalTest.kt
@@ -0,0 +1,49 @@
+/**
+ *
+ * Please note:
+ * This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * Do not edit this file manually.
+ *
+ */
+
+@file:Suppress(
+ "ArrayInDataClass",
+ "EnumEntryName",
+ "RemoveRedundantQualifierName",
+ "UnusedImport"
+)
+
+package org.openapitools.client.models
+
+import io.kotlintest.shouldBe
+import io.kotlintest.specs.ShouldSpec
+
+import org.openapitools.client.models.Animal
+import org.openapitools.client.models.Cat
+import org.openapitools.client.models.Dog
+
+class AnimalTest : ShouldSpec() {
+ init {
+ // uncomment below to create an instance of Animal
+ //val modelInstance = Animal()
+
+ // to test the property `kind`
+ should("test kind") {
+ // uncomment below to test the property
+ //modelInstance.kind shouldBe ("TODO")
+ }
+
+ // to test the property `meow`
+ should("test meow") {
+ // uncomment below to test the property
+ //modelInstance.meow shouldBe ("TODO")
+ }
+
+ // to test the property `bark`
+ should("test bark") {
+ // uncomment below to test the property
+ //modelInstance.bark shouldBe ("TODO")
+ }
+
+ }
+}
diff --git a/samples/client/petstore/kotlin-fix-double-serializable-annotation/src/test/kotlin/org/openapitools/client/models/CatTest.kt b/samples/client/petstore/kotlin-fix-double-serializable-annotation/src/test/kotlin/org/openapitools/client/models/CatTest.kt
new file mode 100644
index 000000000000..6a05c26f5e9e
--- /dev/null
+++ b/samples/client/petstore/kotlin-fix-double-serializable-annotation/src/test/kotlin/org/openapitools/client/models/CatTest.kt
@@ -0,0 +1,41 @@
+/**
+ *
+ * Please note:
+ * This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * Do not edit this file manually.
+ *
+ */
+
+@file:Suppress(
+ "ArrayInDataClass",
+ "EnumEntryName",
+ "RemoveRedundantQualifierName",
+ "UnusedImport"
+)
+
+package org.openapitools.client.models
+
+import io.kotlintest.shouldBe
+import io.kotlintest.specs.ShouldSpec
+
+import org.openapitools.client.models.Cat
+
+class CatTest : ShouldSpec() {
+ init {
+ // uncomment below to create an instance of Cat
+ //val modelInstance = Cat()
+
+ // to test the property `kind`
+ should("test kind") {
+ // uncomment below to test the property
+ //modelInstance.kind shouldBe ("TODO")
+ }
+
+ // to test the property `meow`
+ should("test meow") {
+ // uncomment below to test the property
+ //modelInstance.meow shouldBe ("TODO")
+ }
+
+ }
+}
diff --git a/samples/client/petstore/kotlin-fix-double-serializable-annotation/src/test/kotlin/org/openapitools/client/models/DeviceTest.kt b/samples/client/petstore/kotlin-fix-double-serializable-annotation/src/test/kotlin/org/openapitools/client/models/DeviceTest.kt
new file mode 100644
index 000000000000..adfc4d97013f
--- /dev/null
+++ b/samples/client/petstore/kotlin-fix-double-serializable-annotation/src/test/kotlin/org/openapitools/client/models/DeviceTest.kt
@@ -0,0 +1,49 @@
+/**
+ *
+ * Please note:
+ * This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * Do not edit this file manually.
+ *
+ */
+
+@file:Suppress(
+ "ArrayInDataClass",
+ "EnumEntryName",
+ "RemoveRedundantQualifierName",
+ "UnusedImport"
+)
+
+package org.openapitools.client.models
+
+import io.kotlintest.shouldBe
+import io.kotlintest.specs.ShouldSpec
+
+import org.openapitools.client.models.Device
+import org.openapitools.client.models.Laptop
+import org.openapitools.client.models.Phone
+
+class DeviceTest : ShouldSpec() {
+ init {
+ // uncomment below to create an instance of Device
+ //val modelInstance = Device()
+
+ // to test the property `model`
+ should("test model") {
+ // uncomment below to test the property
+ //modelInstance.model shouldBe ("TODO")
+ }
+
+ // to test the property `number`
+ should("test number") {
+ // uncomment below to test the property
+ //modelInstance.number shouldBe ("TODO")
+ }
+
+ // to test the property `ramGb`
+ should("test ramGb") {
+ // uncomment below to test the property
+ //modelInstance.ramGb shouldBe ("TODO")
+ }
+
+ }
+}
diff --git a/samples/client/petstore/kotlin-fix-double-serializable-annotation/src/test/kotlin/org/openapitools/client/models/DogTest.kt b/samples/client/petstore/kotlin-fix-double-serializable-annotation/src/test/kotlin/org/openapitools/client/models/DogTest.kt
new file mode 100644
index 000000000000..8b3e95c326af
--- /dev/null
+++ b/samples/client/petstore/kotlin-fix-double-serializable-annotation/src/test/kotlin/org/openapitools/client/models/DogTest.kt
@@ -0,0 +1,41 @@
+/**
+ *
+ * Please note:
+ * This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * Do not edit this file manually.
+ *
+ */
+
+@file:Suppress(
+ "ArrayInDataClass",
+ "EnumEntryName",
+ "RemoveRedundantQualifierName",
+ "UnusedImport"
+)
+
+package org.openapitools.client.models
+
+import io.kotlintest.shouldBe
+import io.kotlintest.specs.ShouldSpec
+
+import org.openapitools.client.models.Dog
+
+class DogTest : ShouldSpec() {
+ init {
+ // uncomment below to create an instance of Dog
+ //val modelInstance = Dog()
+
+ // to test the property `kind`
+ should("test kind") {
+ // uncomment below to test the property
+ //modelInstance.kind shouldBe ("TODO")
+ }
+
+ // to test the property `bark`
+ should("test bark") {
+ // uncomment below to test the property
+ //modelInstance.bark shouldBe ("TODO")
+ }
+
+ }
+}
diff --git a/samples/client/petstore/kotlin-fix-double-serializable-annotation/src/test/kotlin/org/openapitools/client/models/LaptopTest.kt b/samples/client/petstore/kotlin-fix-double-serializable-annotation/src/test/kotlin/org/openapitools/client/models/LaptopTest.kt
new file mode 100644
index 000000000000..9e791caaf886
--- /dev/null
+++ b/samples/client/petstore/kotlin-fix-double-serializable-annotation/src/test/kotlin/org/openapitools/client/models/LaptopTest.kt
@@ -0,0 +1,41 @@
+/**
+ *
+ * Please note:
+ * This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * Do not edit this file manually.
+ *
+ */
+
+@file:Suppress(
+ "ArrayInDataClass",
+ "EnumEntryName",
+ "RemoveRedundantQualifierName",
+ "UnusedImport"
+)
+
+package org.openapitools.client.models
+
+import io.kotlintest.shouldBe
+import io.kotlintest.specs.ShouldSpec
+
+import org.openapitools.client.models.Laptop
+
+class LaptopTest : ShouldSpec() {
+ init {
+ // uncomment below to create an instance of Laptop
+ //val modelInstance = Laptop()
+
+ // to test the property `model`
+ should("test model") {
+ // uncomment below to test the property
+ //modelInstance.model shouldBe ("TODO")
+ }
+
+ // to test the property `ramGb`
+ should("test ramGb") {
+ // uncomment below to test the property
+ //modelInstance.ramGb shouldBe ("TODO")
+ }
+
+ }
+}
diff --git a/samples/client/petstore/kotlin-fix-double-serializable-annotation/src/test/kotlin/org/openapitools/client/models/PetKindTest.kt b/samples/client/petstore/kotlin-fix-double-serializable-annotation/src/test/kotlin/org/openapitools/client/models/PetKindTest.kt
new file mode 100644
index 000000000000..7e0942fbf22b
--- /dev/null
+++ b/samples/client/petstore/kotlin-fix-double-serializable-annotation/src/test/kotlin/org/openapitools/client/models/PetKindTest.kt
@@ -0,0 +1,29 @@
+/**
+ *
+ * Please note:
+ * This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * Do not edit this file manually.
+ *
+ */
+
+@file:Suppress(
+ "ArrayInDataClass",
+ "EnumEntryName",
+ "RemoveRedundantQualifierName",
+ "UnusedImport"
+)
+
+package org.openapitools.client.models
+
+import io.kotlintest.shouldBe
+import io.kotlintest.specs.ShouldSpec
+
+import org.openapitools.client.models.PetKind
+
+class PetKindTest : ShouldSpec() {
+ init {
+ // uncomment below to create an instance of PetKind
+ //val modelInstance = PetKind()
+
+ }
+}
diff --git a/samples/client/petstore/kotlin-fix-double-serializable-annotation/src/test/kotlin/org/openapitools/client/models/PetTest.kt b/samples/client/petstore/kotlin-fix-double-serializable-annotation/src/test/kotlin/org/openapitools/client/models/PetTest.kt
new file mode 100644
index 000000000000..e0fbc78d3621
--- /dev/null
+++ b/samples/client/petstore/kotlin-fix-double-serializable-annotation/src/test/kotlin/org/openapitools/client/models/PetTest.kt
@@ -0,0 +1,48 @@
+/**
+ *
+ * Please note:
+ * This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * Do not edit this file manually.
+ *
+ */
+
+@file:Suppress(
+ "ArrayInDataClass",
+ "EnumEntryName",
+ "RemoveRedundantQualifierName",
+ "UnusedImport"
+)
+
+package org.openapitools.client.models
+
+import io.kotlintest.shouldBe
+import io.kotlintest.specs.ShouldSpec
+
+import org.openapitools.client.models.Pet
+import org.openapitools.client.models.PetKind
+
+class PetTest : ShouldSpec() {
+ init {
+ // uncomment below to create an instance of Pet
+ //val modelInstance = Pet()
+
+ // to test the property `id`
+ should("test id") {
+ // uncomment below to test the property
+ //modelInstance.id shouldBe ("TODO")
+ }
+
+ // to test the property `name`
+ should("test name") {
+ // uncomment below to test the property
+ //modelInstance.name shouldBe ("TODO")
+ }
+
+ // to test the property `kind`
+ should("test kind") {
+ // uncomment below to test the property
+ //modelInstance.kind shouldBe ("TODO")
+ }
+
+ }
+}
diff --git a/samples/client/petstore/kotlin-fix-double-serializable-annotation/src/test/kotlin/org/openapitools/client/models/PhoneTest.kt b/samples/client/petstore/kotlin-fix-double-serializable-annotation/src/test/kotlin/org/openapitools/client/models/PhoneTest.kt
new file mode 100644
index 000000000000..41407333efc0
--- /dev/null
+++ b/samples/client/petstore/kotlin-fix-double-serializable-annotation/src/test/kotlin/org/openapitools/client/models/PhoneTest.kt
@@ -0,0 +1,41 @@
+/**
+ *
+ * Please note:
+ * This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * Do not edit this file manually.
+ *
+ */
+
+@file:Suppress(
+ "ArrayInDataClass",
+ "EnumEntryName",
+ "RemoveRedundantQualifierName",
+ "UnusedImport"
+)
+
+package org.openapitools.client.models
+
+import io.kotlintest.shouldBe
+import io.kotlintest.specs.ShouldSpec
+
+import org.openapitools.client.models.Phone
+
+class PhoneTest : ShouldSpec() {
+ init {
+ // uncomment below to create an instance of Phone
+ //val modelInstance = Phone()
+
+ // to test the property `model`
+ should("test model") {
+ // uncomment below to test the property
+ //modelInstance.model shouldBe ("TODO")
+ }
+
+ // to test the property `number`
+ should("test number") {
+ // uncomment below to test the property
+ //modelInstance.number shouldBe ("TODO")
+ }
+
+ }
+}