[Native][tests] Allow overriding test properties via Gradle properties

native/native.tests/build.gradle.kts

@@ -39,14 +39,24 @@ if (kotlinBuildProperties.isInJpsBuildIdeaSync) {
     }
 }
 
-if (kotlinBuildProperties.isKotlinNativeEnabled) {
-    val kotlinNativeHome = project(":kotlin-native").projectDir.resolve("dist")
+enum class TestProperty(shortName: String) {
+    // Use a separate Gradle property to pass Kotlin/Native home to tests: "kotlin.internal.native.test.nativeHome".
+    // Don't use "kotlin.native.home" and similar properties for this purpose, as these properties may have undesired
+    // effect on other Gradle tasks (ex: :kotlin-native:dist) that might be executed along with test task.
+    KOTLIN_NATIVE_HOME("nativeHome"),
+    COMPILER_CLASSPATH("compilerClasspath"),
+    TEST_MODE("mode"),
+    USE_CACHE("useCache");
 
-    val kotlinNativeCompilerClassPath: Configuration by configurations.creating
-    dependencies {
-        kotlinNativeCompilerClassPath(project(":kotlin-native-compiler-embeddable"))
+    private val propertyName = "kotlin.internal.native.test.$shortName"
+
+    fun setUpFromGradleProperty(task: Test, defaultValue: () -> Any? = { null }) {
+        val propertyValue = task.project.findProperty(propertyName) ?: defaultValue()
+        if (propertyValue != null) task.systemProperty(propertyName, propertyValue)
     }
+}
 
+if (kotlinBuildProperties.isKotlinNativeEnabled) {
     projectTest(taskName = "test", jUnitMode = JUnitMode.JUnit5) {
         dependsOn(":kotlin-native:dist" /*, ":kotlin-native:distPlatformLibs"*/)
         workingDir = rootDir
@@ -60,14 +70,17 @@ if (kotlinBuildProperties.isKotlinNativeEnabled) {
         // additional stack frames more compared to the old one because of another launcher, etc. and it turns out this is not enough.
         jvmArgs("-Xss2m")
 
-        systemProperty("kotlin.native.home", kotlinNativeHome.absolutePath)
-        systemProperty("kotlin.internal.native.classpath", kotlinNativeCompilerClassPath.files.joinToString(";"))
+        TestProperty.KOTLIN_NATIVE_HOME.setUpFromGradleProperty(this) {
+            project(":kotlin-native").projectDir.resolve("dist").absolutePath
+        }
+
+        TestProperty.COMPILER_CLASSPATH.setUpFromGradleProperty(this) {
+            configurations.detachedConfiguration(dependencies.project(":kotlin-native-compiler-embeddable")).files.joinToString(";")
+        }
 
         // Pass Gradle properties as JVM properties so test process can read them.
-        listOf(
-            "kotlin.internal.native.test.mode",
-            "kotlin.internal.native.test.useCache"
-        ).forEach { propertyName -> findProperty(propertyName)?.let { systemProperty(propertyName, it) } }
+        TestProperty.TEST_MODE.setUpFromGradleProperty(this)
+        TestProperty.USE_CACHE.setUpFromGradleProperty(this)
 
         useJUnitPlatform()
     }

native/native.tests/tests/org/jetbrains/kotlin/konan/blackboxtest/NativeBlackBoxTestSupport.kt

@@ -27,8 +27,11 @@ class NativeBlackBoxTestSupport : BeforeEachCallback {
      * Also, [TestInstancePostProcessor.postProcessTestInstance] allows accessing only the currently created test instance and does
      * not allow accessing its parent test instance in case there are inner test classes in the generated test suite.
      */
-    override fun beforeEach(extensionContext: ExtensionContext) = with(extensionContext) {
+    override fun beforeEach(extensionContext: ExtensionContext): Unit = with(extensionContext) {
         enclosingTestInstance.testRunProvider = getOrCreateTestRunProvider()
+
+        // Set the essential compiler property.
+        System.setProperty("kotlin.native.home", getOrCreateGlobalEnvironment().kotlinNativeHome.path)
     }
 
     companion object {

native/native.tests/tests/org/jetbrains/kotlin/konan/blackboxtest/TestEnvironment.kt

@@ -38,22 +38,22 @@ internal class GlobalTestEnvironment(
 
         // Use isolated cached class loader.
         private val defaultKotlinNativeClassLoader: Lazy<ClassLoader> = lazy {
-            val nativeClassPath = System.getProperty(KOTLIN_NATIVE_CLASSPATH)
+            val nativeClassPath = System.getProperty(COMPILER_CLASSPATH)
                 ?.split(':', ';')
                 ?.map { File(it).toURI().toURL() }
                 ?.toTypedArray()
-                ?: fail { "Non-specified $KOTLIN_NATIVE_CLASSPATH system property" }
+                ?: fail { "Non-specified $COMPILER_CLASSPATH system property" }
 
             URLClassLoader(nativeClassPath, /* no parent class loader */ null).apply { setDefaultAssertionStatus(true) }
         }
 
         private val defaultTestMode: TestMode = run {
-            val testModeName = System.getProperty(KOTLIN_NATIVE_TEST_MODE) ?: return@run TestMode.WITH_MODULES
+            val testModeName = System.getProperty(TEST_MODE) ?: return@run TestMode.WITH_MODULES
 
             TestMode.values().firstOrNull { it.name == testModeName } ?: fail {
                 buildString {
                     appendLine("Unknown test mode name $testModeName.")
-                    appendLine("One of the following test modes should be passed through $KOTLIN_NATIVE_TEST_MODE system property:")
+                    appendLine("One of the following test modes should be passed through $TEST_MODE system property:")
                     TestMode.values().forEach { testMode ->
                         appendLine("- ${testMode.name}: ${testMode.description}")
                     }
@@ -62,10 +62,9 @@ internal class GlobalTestEnvironment(
         }
 
         private val defaultCacheSettings: TestCacheSettings = run {
-            val useCacheValue = System.getProperty(KOTLIN_NATIVE_TEST_USE_CACHE)
+            val useCacheValue = System.getProperty(USE_CACHE)
             val useCache = if (useCacheValue != null) {
-                useCacheValue.toBooleanStrictOrNull()
-                    ?: fail { "Invalid value for $KOTLIN_NATIVE_TEST_USE_CACHE system property: $useCacheValue" }
+                useCacheValue.toBooleanStrictOrNull() ?: fail { "Invalid value for $USE_CACHE system property: $useCacheValue" }
             } else
                 true
 
@@ -75,10 +74,10 @@ internal class GlobalTestEnvironment(
         private val projectBuildDir: File
             get() = System.getenv(PROJECT_BUILD_DIR)?.let(::File) ?: fail { "Non-specified $PROJECT_BUILD_DIR environment variable" }
 
-        private const val KOTLIN_NATIVE_HOME = "kotlin.native.home"
-        private const val KOTLIN_NATIVE_CLASSPATH = "kotlin.internal.native.classpath"
-        private const val KOTLIN_NATIVE_TEST_MODE = "kotlin.internal.native.test.mode"
-        private const val KOTLIN_NATIVE_TEST_USE_CACHE = "kotlin.internal.native.test.useCache"
+        private const val KOTLIN_NATIVE_HOME = "kotlin.internal.native.test.nativeHome"
+        private const val COMPILER_CLASSPATH = "kotlin.internal.native.test.compilerClasspath"
+        private const val TEST_MODE = "kotlin.internal.native.test.mode"
+        private const val USE_CACHE = "kotlin.internal.native.test.useCache"
         private const val PROJECT_BUILD_DIR = "PROJECT_BUILD_DIR"
     }
 }