Tests with version-specific codes (#1586)

* Set up test

* Tests with version-specific codes

Author: aszady

.bazelci/presubmit.yml

@@ -85,6 +85,12 @@ tasks:
     bazel: 6.3.0
     shell_commands:
       - "./test_examples.sh"
+  cross_build_linux:
+    name: "./test_cross_build"
+    platform: ubuntu2004
+    bazel: 6.3.0
+    shell_commands:
+      - "./test_cross_build.sh"
   lint_linux:
     name: "bazel //tools:lint_check"
     platform: ubuntu2004

test/shell/test_cross_build.sh

@@ -0,0 +1,15 @@
+# shellcheck source=./test_runner.sh
+dir=$( cd "$( dirname "${BASH_SOURCE[0]}" )" && pwd )
+. "${dir}"/test_runner.sh
+. "${dir}"/test_helper.sh
+runner=$(get_test_runner "${1:-local}")
+
+cd test_cross_build
+
+function test_cross_build() {
+  bazel test //...
+  bazel clean
+  bazel shutdown;
+}
+
+$runner test_cross_build

test_all.sh

@@ -5,5 +5,6 @@ set -euo pipefail
 dir=$( cd "$( dirname "${BASH_SOURCE[0]}" )" && pwd )
 "${dir}"/test_rules_scala.sh
 "${dir}"/test_version.sh
+"${dir}"/test_cross_build.sh
 "${dir}"/test_reproducibility.sh
 #"${dir}"/test_intellij_aspect.sh

test_cross_build.sh

@@ -0,0 +1,7 @@
+#!/usr/bin/env bash
+
+set -e
+
+test_dir=$( cd "$( dirname "${BASH_SOURCE[0]}" )" && pwd )/test/shell
+
+. "${test_dir}"/test_cross_build.sh

test_cross_build/WORKSPACE

@@ -0,0 +1,40 @@
+# WORKSPACE
+
+load("@bazel_tools//tools/build_defs/repo:http.bzl", "http_archive")
+
+http_archive(
+    name = "bazel_skylib",
+    sha256 = "d00f1389ee20b60018e92644e0948e16e350a7707219e7a390fb0a99b6ec9262",
+    urls = [
+        "https://mirror.bazel.build/github.com/bazelbuild/bazel-skylib/releases/download/1.7.0/bazel-skylib-1.7.0.tar.gz",
+        "https://github.com/bazelbuild/bazel-skylib/releases/download/1.7.0/bazel-skylib-1.7.0.tar.gz",
+    ],
+)
+
+local_repository(
+    name = "io_bazel_rules_scala",
+    path = "..",
+)
+
+load("@io_bazel_rules_scala//:scala_config.bzl", "scala_config")
+
+scala_config(
+    scala_version = "3.1.0",
+    scala_versions = [
+        "2.11.12",
+        "2.12.18",
+        "2.13.12",
+        "3.1.0",
+        "3.2.1",
+        "3.3.1",
+    ],
+)
+
+# loads other rules Rules Scala depends on
+load("@io_bazel_rules_scala//scala:scala.bzl", "rules_scala_toolchain_deps_repositories")
+
+rules_scala_toolchain_deps_repositories()
+
+load("@io_bazel_rules_scala//scala:toolchains.bzl", "scala_register_toolchains")
+
+scala_register_toolchains()

test_cross_build/version_specific/BUILD

@@ -0,0 +1,67 @@
+load("@io_bazel_rules_scala//scala:scala.bzl", "scala_library")
+
+# A collection of arbitrarily chosen backward- and forward-incompatible code.
+# This simply tests if the proper compiler is assigned, according to Scala version setting.
+
+# What's new in 3.3
+scala_library(
+    name = "since_3_3",
+    srcs = ["since_3_3.scala"],
+    scala_version = "3.3.1",
+)
+
+scala_library(
+    name = "before_3_3",
+    srcs = ["before_3_3.scala"],
+    scala_version = "3.2.1",
+)
+
+# What's new in 3.2
+scala_library(
+    name = "since_3_2",
+    srcs = ["since_3_2.scala"],
+    scala_version = "3.2.1",
+)
+
+scala_library(
+    name = "before_3_2",
+    srcs = ["before_3_2.scala"],
+    scala_version = "3.1.0",
+)
+
+# What's new in 3.1
+scala_library(
+    name = "since_3_1",
+    srcs = ["since_3_1.scala"],
+    scala_version = "3.1.0",
+)
+
+scala_library(
+    name = "scala_3_3",
+    srcs = [
+        "since_3_1.scala",
+        "since_3_2.scala",
+        "since_3_3.scala",
+    ],
+    scala_version = "3.3.1",
+)
+
+scala_library(
+    name = "scala_3_2",
+    srcs = [
+        "before_3_3.scala",
+        "since_3_1.scala",
+        "since_3_2.scala",
+    ],
+    scala_version = "3.2.1",
+)
+
+scala_library(
+    name = "scala_3_1",
+    srcs = [
+        "before_3_2.scala",
+        "before_3_3.scala",
+        "since_3_1.scala",
+    ],
+    scala_version = "3.1.0",
+)

test_cross_build/version_specific/before_3_2.scala

@@ -0,0 +1,3 @@
+class Example(using String)(i: Int)
+given String = "something"
+val instance = Example()(6)

test_cross_build/version_specific/before_3_3.scala

@@ -0,0 +1,4 @@
+class Outer:
+    type Inner
+
+inline def method(inline param: Outer): param.Inner = ???

test_cross_build/version_specific/since_3_1.scala

@@ -0,0 +1 @@
+type Choice[A] = A match { case Int => Long ; case Long => Int }

test_cross_build/version_specific/since_3_2.scala

@@ -0,0 +1,3 @@
+class Example(using String)(i: Int)
+given String = "something"
+val instance = Example(6)

test_cross_build/version_specific/since_3_3.scala

@@ -0,0 +1 @@
+import util.boundary, boundary.break