Tests for navigation to stdlib multiplatform sources (KT-26004)

#KT-26004 Fixed

idea/idea-test-framework/test/org/jetbrains/kotlin/idea/test/KotlinJdkAndMultiplatformStdlibDescriptor.kt

@@ -0,0 +1,60 @@
+/*
+ * Copyright 2010-2018 JetBrains s.r.o. Use of this source code is governed by the Apache 2.0 license
+ * that can be found in the license/LICENSE.txt file.
+ */
+
+package org.jetbrains.kotlin.idea.test
+
+import com.intellij.openapi.module.Module
+import com.intellij.openapi.module.ModuleType
+import com.intellij.openapi.module.StdModuleTypes
+import com.intellij.openapi.projectRoots.Sdk
+import com.intellij.openapi.roots.ModifiableRootModel
+import com.intellij.openapi.roots.OrderRootType
+import com.intellij.openapi.roots.libraries.Library
+import com.intellij.openapi.roots.ui.configuration.libraryEditor.NewLibraryEditor
+import com.intellij.openapi.vfs.VfsUtil
+import org.jetbrains.kotlin.codegen.forTestCompile.ForTestCompileRuntime
+import java.io.File
+
+class KotlinJdkAndMultiplatformStdlibDescriptor private constructor(private val withSources: Boolean) : KotlinLightProjectDescriptor() {
+    override fun getModuleType(): ModuleType<*> = StdModuleTypes.JAVA
+
+    override fun getSdk(): Sdk? = PluginTestCaseBase.mockJdk8()
+
+    override fun configureModule(module: Module, model: ModifiableRootModel) {
+        model.addLib(
+            STDLIB_COMMON_LIB_NAME,
+            withSources,
+            ForTestCompileRuntime.stdlibCommonForTests(),
+            ForTestCompileRuntime.stdlibCommonSourcesForTests()
+        )
+
+        model.addLib(
+            STDLIB_LIB_NAME,
+            withSources,
+            ForTestCompileRuntime.runtimeJarForTests(),
+            ForTestCompileRuntime.stdlibMavenSourcesJarForTests()
+        )
+    }
+
+    companion object {
+        val JDK_AND_MULTIPLATFORM_STDLIB_WITH_SOURCES = KotlinJdkAndMultiplatformStdlibDescriptor(true)
+
+        private fun ModifiableRootModel.addLib(name: String, withSources: Boolean, classesJar: File, sourcesJar: File?): Library {
+            val editor = NewLibraryEditor().apply {
+                this.name = name
+                addRoot(VfsUtil.getUrlForLibraryRoot(classesJar), OrderRootType.CLASSES)
+
+                if (withSources && sourcesJar != null) {
+                    addRoot(VfsUtil.getUrlForLibraryRoot(sourcesJar), OrderRootType.SOURCES)
+                }
+            }
+
+            return ConfigLibraryUtil.addLibrary(editor, this)
+        }
+
+        private const val STDLIB_COMMON_LIB_NAME = "stdlib-common"
+        private const val STDLIB_LIB_NAME = "stdlib"
+    }
+}

idea/idea-test-framework/test/org/jetbrains/kotlin/idea/test/KotlinLightCodeInsightFixtureTestCase.kt

@@ -5,7 +5,6 @@
 
 package org.jetbrains.kotlin.idea.test
 
-import com.intellij.codeInsight.CodeInsightTestCase
 import com.intellij.codeInsight.daemon.impl.EditorTracker
 import com.intellij.ide.highlighter.JavaFileType
 import com.intellij.ide.startup.impl.StartupManagerImpl
@@ -31,7 +30,9 @@ import com.intellij.testFramework.LightProjectDescriptor
 import com.intellij.testFramework.LoggedErrorProcessor
 import org.apache.log4j.Logger
 import org.jetbrains.kotlin.cli.common.arguments.K2JVMCompilerArguments
-import org.jetbrains.kotlin.config.*
+import org.jetbrains.kotlin.config.CompilerSettings
+import org.jetbrains.kotlin.config.LanguageFeature
+import org.jetbrains.kotlin.config.LanguageVersion
 import org.jetbrains.kotlin.idea.KotlinFileType
 import org.jetbrains.kotlin.idea.compiler.configuration.KotlinCommonCompilerArgumentsHolder
 import org.jetbrains.kotlin.idea.compiler.configuration.KotlinCompilerSettings
@@ -94,6 +95,16 @@ abstract class KotlinLightCodeInsightFixtureTestCase : KotlinLightCodeInsightFix
     override fun getProjectDescriptor(): LightProjectDescriptor
             = getProjectDescriptorFromFileDirective()
 
+    protected fun getProjectDescriptorFromAnnotation(): LightProjectDescriptor {
+        val testMethod = this::class.java.getDeclaredMethod(name)
+        val platformId = testMethod.getAnnotation(ProjectDescriptorKind::class.java)?.value
+
+        return when (platformId) {
+            JDK_AND_MULTIPLATFORM_STDLIB_WITH_SOURCES -> KotlinJdkAndMultiplatformStdlibDescriptor.JDK_AND_MULTIPLATFORM_STDLIB_WITH_SOURCES
+            else -> throw IllegalStateException("Unknown value for project descriptor kind")
+        }
+    }
+
     protected fun getProjectDescriptorFromTestName(): LightProjectDescriptor {
         val testName = StringUtil.toLowerCase(getTestName(false))
 

idea/idea-test-framework/test/org/jetbrains/kotlin/idea/test/KotlinLightCodeInsightFixtureTestCase.kt.173

@@ -95,6 +95,16 @@ abstract class KotlinLightCodeInsightFixtureTestCase : KotlinLightCodeInsightFix
     override fun getProjectDescriptor(): LightProjectDescriptor
             = getProjectDescriptorFromFileDirective()
 
+    protected fun getProjectDescriptorFromAnnotation(): LightProjectDescriptor {
+        val testMethod = this::class.java.getDeclaredMethod(name)
+        val platformId = testMethod.getAnnotation(ProjectDescriptorKind::class.java)?.value
+
+        return when (platformId) {
+            JDK_AND_MULTIPLATFORM_STDLIB_WITH_SOURCES -> KotlinJdkAndMultiplatformStdlibDescriptor.JDK_AND_MULTIPLATFORM_STDLIB_WITH_SOURCES
+            else -> throw IllegalStateException("Unknown value for project descriptor kind")
+        }
+    }
+
     protected fun getProjectDescriptorFromTestName(): LightProjectDescriptor {
         val testName = StringUtil.toLowerCase(getTestName(false))
 

idea/idea-test-framework/test/org/jetbrains/kotlin/idea/test/projectDescriptorAnnotation.kt

@@ -0,0 +1,12 @@
+/*
+ * Copyright 2010-2018 JetBrains s.r.o. Use of this source code is governed by the Apache 2.0 license
+ * that can be found in the license/LICENSE.txt file.
+ */
+
+package org.jetbrains.kotlin.idea.test
+
+@Retention(AnnotationRetention.RUNTIME)
+@Target(AnnotationTarget.FUNCTION)
+annotation class ProjectDescriptorKind(val value: String)
+
+const val JDK_AND_MULTIPLATFORM_STDLIB_WITH_SOURCES = "JDK_AND_MULTIPLATFORM_STDLIB_WITH_SOURCES"

idea/tests/org/jetbrains/kotlin/idea/decompiler/navigation/LightNavigateToStdlibSourceTest.kt

@@ -0,0 +1,42 @@
+/*
+ * Copyright 2010-2018 JetBrains s.r.o. Use of this source code is governed by the Apache 2.0 license
+ * that can be found in the license/LICENSE.txt file.
+ */
+
+package org.jetbrains.kotlin.idea.decompiler.navigation
+
+import junit.framework.TestCase
+import org.jetbrains.kotlin.idea.KotlinFileType
+import org.jetbrains.kotlin.idea.test.JDK_AND_MULTIPLATFORM_STDLIB_WITH_SOURCES
+import org.jetbrains.kotlin.idea.test.KotlinLightCodeInsightFixtureTestCase
+import org.jetbrains.kotlin.idea.test.ProjectDescriptorKind
+
+class LightNavigateToStdlibSourceTest : KotlinLightCodeInsightFixtureTestCase() {
+    @ProjectDescriptorKind(JDK_AND_MULTIPLATFORM_STDLIB_WITH_SOURCES)
+    fun testNavigateToCommonDeclarationWhenPlatformSpecificOverloadAvailable() {
+        doTest(
+            "fun some() { <caret>mapOf(1 to 2, 3 to 4) }",
+            "Maps.kt"
+        )
+    }
+
+    @ProjectDescriptorKind(JDK_AND_MULTIPLATFORM_STDLIB_WITH_SOURCES)
+    fun testNavigateToJVMSpecificationWithoutExpectActual() {
+        doTest(
+            "fun some() { <caret>mapOf(1 to 2) }",
+            "MapsJVM.kt"
+        )
+    }
+
+    override fun getProjectDescriptor() = getProjectDescriptorFromAnnotation()
+
+    private fun doTest(text: String, sourceFileName: String) {
+        myFixture.configureByText(KotlinFileType.INSTANCE, text)
+
+        val ref = file.findReferenceAt(editor.caretModel.offset)
+        val resolve = ref!!.resolve()
+        val navigationElement = resolve!!.navigationElement
+
+        TestCase.assertEquals(sourceFileName, navigationElement.containingFile.name)
+    }
+}