Rename: Support automatic test renaming for facade files

#KT-10578 Fixed
(cherry picked from commit 35050f4)

ChangeLog.md

@@ -227,6 +227,7 @@
 - [`KT-7851`](https://youtrack.jetbrains.com/issue/KT-7851) Respect naming conventions in automatic variable rename
 - [`KT-8044`](https://youtrack.jetbrains.com/issue/KT-8044), [`KT-9432`](https://youtrack.jetbrains.com/issue/KT-9432) Support @JvmName annotation in rename refactoring
 - [`KT-8512`](https://youtrack.jetbrains.com/issue/KT-8512) Support "Rename tests" options in Rename dialog
+- [`KT-10578`](https://youtrack.jetbrains.com/issue/KT-10578) Support automatic test renaming for facade files
 - [`KT-12657`](https://youtrack.jetbrains.com/issue/KT-12657) Rename implicit usages of annotation method 'value'
 - [`KT-12759`](https://youtrack.jetbrains.com/issue/KT-12759) Suggest renaming both property accessors with matching @JvmName when renaming one of them from Java
 

idea/src/org/jetbrains/kotlin/idea/refactoring/rename/KotlinAutomaticTestRenamerFactory.kt

@@ -21,15 +21,17 @@ import com.intellij.psi.PsiElement
 import com.intellij.refactoring.rename.naming.AutomaticRenamer
 import com.intellij.refactoring.rename.naming.AutomaticTestRenamerFactory
 import com.intellij.usageView.UsageInfo
-import org.jetbrains.kotlin.asJava.KtLightClass
-import org.jetbrains.kotlin.asJava.toLightClass
+import org.jetbrains.kotlin.asJava.*
+import org.jetbrains.kotlin.load.kotlin.PackagePartClassUtils
 import org.jetbrains.kotlin.psi.KtClassOrObject
+import org.jetbrains.kotlin.psi.KtFile
 
 class KotlinAutomaticTestRenamerFactory : AutomaticTestRenamerFactory() {
     private fun getPsiClass(element: PsiElement): PsiClass? {
         return when (element) {
-            is KtLightClass -> element
+            is KtLightClassForExplicitDeclaration -> element
             is KtClassOrObject -> element.toLightClass()
+            is KtFile -> element.findFacadeClass()
             else -> null
         }
     }
@@ -39,7 +41,9 @@ class KotlinAutomaticTestRenamerFactory : AutomaticTestRenamerFactory() {
         return super.isApplicable(psiClass)
     }
 
-    override fun createRenamer(element: PsiElement, newName: String?, usages: MutableCollection<UsageInfo>): AutomaticRenamer {
-        return super.createRenamer(getPsiClass(element)!!, newName, usages)
+    override fun createRenamer(element: PsiElement, newName: String, usages: MutableCollection<UsageInfo>): AutomaticRenamer {
+        val psiClass = getPsiClass(element)!!
+        val newPsiClassName = if (psiClass is KtLightClassForFacade) PackagePartClassUtils.getFilePartShortName(newName) else newName
+        return super.createRenamer(psiClass, newPsiClassName, usages)
     }
 }

idea/testData/refactoring/rename/automaticRenamerKotlinTestClassForFacade/after/BarKtTest.kt

@@ -0,0 +1,16 @@
+package test
+
+import org.junit.Test
+import org.junit.Assert.*
+
+class BarKtTest {
+    @Test
+    fun foo1() {
+
+    }
+
+    @Test
+    fun foo2() {
+
+    }
+}

idea/testData/refactoring/rename/automaticRenamerKotlinTestClassForFacade/after/bar.kt

@@ -0,0 +1,9 @@
+package test
+
+fun foo1() {
+
+}
+
+fun foo2() {
+
+}

idea/testData/refactoring/rename/automaticRenamerKotlinTestClassForFacade/automaticRenamerKotlinTestClassForFacade.test

@@ -0,0 +1,7 @@
+{
+  "type": "FILE",
+  "file": "foo.kt",
+  "newName": "bar.kt",
+  "withRuntime": "true",
+  "libraries": ["JUnit@lib/junit-4.12.jar"]
+}

idea/testData/refactoring/rename/automaticRenamerKotlinTestClassForFacade/before/FooKtTest.kt

@@ -0,0 +1,16 @@
+package test
+
+import org.junit.Test
+import org.junit.Assert.*
+
+class FooKtTest {
+    @Test
+    fun foo1() {
+
+    }
+
+    @Test
+    fun foo2() {
+
+    }
+}

idea/testData/refactoring/rename/automaticRenamerKotlinTestClassForFacade/before/foo.kt

@@ -0,0 +1,9 @@
+package test
+
+fun foo1() {
+
+}
+
+fun foo2() {
+
+}

idea/tests/org/jetbrains/kotlin/idea/refactoring/rename/RenameTestGenerated.java

@@ -71,6 +71,12 @@ public class RenameTestGenerated extends AbstractRenameTest {
         doTest(fileName);
     }
 
+    @TestMetadata("automaticRenamerKotlinTestClassForFacade/automaticRenamerKotlinTestClassForFacade.test")
+    public void testAutomaticRenamerKotlinTestClassForFacade_AutomaticRenamerKotlinTestClassForFacade() throws Exception {
+        String fileName = KotlinTestUtils.navigationMetadata("idea/testData/refactoring/rename/automaticRenamerKotlinTestClassForFacade/automaticRenamerKotlinTestClassForFacade.test");
+        doTest(fileName);
+    }
+
     @TestMetadata("automaticRenamerOverloads/package.test")
     public void testAutomaticRenamerOverloads_Package() throws Exception {
         String fileName = KotlinTestUtils.navigationMetadata("idea/testData/refactoring/rename/automaticRenamerOverloads/package.test");