test: add regression test for Optional<Enum> schema

Signed-off-by: Shane Utt <[email protected]>

Author: shaneutt

kube-derive/tests/crd_schema_test.rs

@@ -77,6 +77,9 @@ struct FooSpec {
 
     #[x_kube(merge_strategy = ListMerge::Set)]
     x_kubernetes_set: Vec<String>,
+
+    /// Gender of a person
+    optional_enum: Option<Gender>,
 }
 
 #[derive(Clone, Debug, PartialEq, Deserialize, Serialize, JsonSchema)]
@@ -170,24 +173,28 @@ fn test_shortnames() {
 #[test]
 fn test_serialized_matches_expected() {
     assert_json_eq!(
-        serde_json::to_value(Foo::new("bar", FooSpec {
-            non_nullable: "asdf".to_string(),
-            non_nullable_with_default: "asdf".to_string(),
-            nullable_skipped: None,
-            nullable: None,
-            nullable_skipped_with_default: None,
-            nullable_with_default: None,
-            timestamp: DateTime::from_timestamp(0, 0).unwrap(),
-            complex_enum: ComplexEnum::VariantOne { int: 23 },
-            untagged_enum_person: UntaggedEnumPerson::GenderAndAge(GenderAndAge {
-                age: 42,
-                gender: Gender::Male,
-            }),
-            associated_default: false,
-            my_list: vec!["".into()],
-            set: HashSet::from(["foo".to_owned()]),
-            x_kubernetes_set: vec![],
-        }))
+        serde_json::to_value(Foo::new(
+            "bar",
+            FooSpec {
+                non_nullable: "asdf".to_string(),
+                non_nullable_with_default: "asdf".to_string(),
+                nullable_skipped: None,
+                nullable: None,
+                nullable_skipped_with_default: None,
+                nullable_with_default: None,
+                timestamp: DateTime::from_timestamp(0, 0).unwrap(),
+                complex_enum: ComplexEnum::VariantOne { int: 23 },
+                untagged_enum_person: UntaggedEnumPerson::GenderAndAge(GenderAndAge {
+                    age: 42,
+                    gender: Gender::Male,
+                }),
+                associated_default: false,
+                my_list: vec!["".into()],
+                set: HashSet::from(["foo".to_owned()]),
+                x_kubernetes_set: vec![],
+                optional_enum: Some(Gender::Other),
+            }
+        ))
         .unwrap(),
         serde_json::json!({
             "apiVersion": "clux.dev/v1",
@@ -222,6 +229,7 @@ fn test_serialized_matches_expected() {
                 "myList": [""],
                 "set": ["foo"],
                 "xKubernetesSet": [],
+                "optionalEnum": "Other",
             }
         })
     )
@@ -410,6 +418,16 @@ fn test_crd_schema_matches_expected() {
                                                 },
                                                 "x-kubernetes-list-type": "set",
                                             },
+                                            "optionalEnum": {
+                                                "description": "Gender of a person",
+                                                "enum": [
+                                                    "Female",
+                                                    "Male",
+                                                    "Other"
+                                                ],
+                                                "type": "string",
+                                                "nullable": true
+                                            }
                                         },
                                         "required": [
                                             "complexEnum",