Forbid moving file to another file

#KT-4069 Fixed

idea/src/org/jetbrains/jet/plugin/refactoring/move/JetMoveFilesOrDirectoriesHandler.java

@@ -49,7 +49,7 @@ public class JetMoveFilesOrDirectoriesHandler extends MoveFilesOrDirectoriesHand
                 return false;
             }
         }
-        return true;
+        return super.canMove(elements, targetContainer);
     }
 
     @Override

idea/testData/refactoring/move/kotlin/moveFile/moveFileToFile/after/test.txt

@@ -0,0 +1 @@
+test

idea/testData/refactoring/move/kotlin/moveFile/moveFileToFile/after/test.xml

@@ -0,0 +1,3 @@
+<test>
+  Test
+</test>

idea/testData/refactoring/move/kotlin/moveFile/moveFileToFile/before/test.txt

@@ -0,0 +1 @@
+test

idea/testData/refactoring/move/kotlin/moveFile/moveFileToFile/before/test.xml

@@ -0,0 +1,3 @@
+<test>
+  Test
+</test>

idea/testData/refactoring/move/kotlin/moveFile/moveFileToFile/moveFileToFile.test

@@ -0,0 +1,6 @@
+{
+  "comment": "Such move is forbidden",
+  "mainFile": "test.txt",
+  "type": "MOVE_FILES",
+  "targetFile": "test.xml"
+}

idea/tests/org/jetbrains/jet/plugin/refactoring/move/AbstractJetMoveTest.kt

@@ -48,6 +48,7 @@ import com.intellij.refactoring.move.moveClassesOrPackages.MoveClassToInnerProce
 import com.intellij.psi.PsiFile
 import com.intellij.psi.PsiManager
 import com.intellij.refactoring.move.moveFilesOrDirectories.MoveFilesOrDirectoriesProcessor
+import com.intellij.refactoring.move.MoveHandler
 
 public abstract class AbstractJetMoveTest : MultiFileTestCase() {
     protected fun doTest(path: String) {
@@ -92,7 +93,7 @@ public abstract class AbstractJetMoveTest : MultiFileTestCase() {
             else null
 
             try {
-                action.runRefactoring(mainPsiFile, elementAtCaret, config)
+                action.runRefactoring(rootDir, mainPsiFile, elementAtCaret, config)
 
                 assert(!conflictFile.exists())
             }
@@ -139,7 +140,7 @@ fun JsonObject.getNullableString(name: String): String? = this[name]?.getAsStrin
 
 enum class MoveAction {
     MOVE_MEMBERS {
-        override fun runRefactoring(mainFile: PsiFile, elementAtCaret: PsiElement?, config: JsonObject) {
+        override fun runRefactoring(rootDir: VirtualFile, mainFile: PsiFile, elementAtCaret: PsiElement?, config: JsonObject) {
             val member = elementAtCaret!!.getParentByType(javaClass<PsiMember>())!!
             val targetClassName = config.getString("targetClass")
             val visibility = config.getNullableString("visibility")
@@ -154,7 +155,7 @@ enum class MoveAction {
     }
 
     MOVE_TOP_LEVEL_CLASSES {
-        override fun runRefactoring(mainFile: PsiFile, elementAtCaret: PsiElement?, config: JsonObject) {
+        override fun runRefactoring(rootDir: VirtualFile, mainFile: PsiFile, elementAtCaret: PsiElement?, config: JsonObject) {
             val classToMove = elementAtCaret!!.getParentByType(javaClass<PsiClass>())!!
             val targetPackage = config.getString("targetPackage")
 
@@ -170,7 +171,7 @@ enum class MoveAction {
     }
 
     MOVE_PACKAGES {
-        override fun runRefactoring(mainFile: PsiFile, elementAtCaret: PsiElement?, config: JsonObject) {
+        override fun runRefactoring(rootDir: VirtualFile, mainFile: PsiFile, elementAtCaret: PsiElement?, config: JsonObject) {
             val project = mainFile.getProject()
             val sourcePackage = config.getString("sourcePackage")
             val targetPackage = config.getString("targetPackage")
@@ -187,7 +188,7 @@ enum class MoveAction {
     }
 
     MOVE_TOP_LEVEL_CLASSES_TO_INNER {
-        override fun runRefactoring(mainFile: PsiFile, elementAtCaret: PsiElement?, config: JsonObject) {
+        override fun runRefactoring(rootDir: VirtualFile, mainFile: PsiFile, elementAtCaret: PsiElement?, config: JsonObject) {
             val project = mainFile.getProject()
 
             val classToMove = elementAtCaret!!.getParentByType(javaClass<PsiClass>())!!
@@ -205,7 +206,7 @@ enum class MoveAction {
     }
 
     MOVE_INNER_CLASS {
-        override fun runRefactoring(mainFile: PsiFile, elementAtCaret: PsiElement?, config: JsonObject) {
+        override fun runRefactoring(rootDir: VirtualFile, mainFile: PsiFile, elementAtCaret: PsiElement?, config: JsonObject) {
             val project = mainFile.getProject()
 
             val classToMove = elementAtCaret!!.getParentByType(javaClass<PsiClass>())!!
@@ -225,21 +226,34 @@ enum class MoveAction {
     }
 
     MOVE_FILES {
-        override fun runRefactoring(mainFile: PsiFile, elementAtCaret: PsiElement?, config: JsonObject) {
+        override fun runRefactoring(rootDir: VirtualFile, mainFile: PsiFile, elementAtCaret: PsiElement?, config: JsonObject) {
             val project = mainFile.getProject()
-            val targetPackage = config.getString("targetPackage")
 
-            MoveFilesOrDirectoriesProcessor(
-                    project = project,
-                    elements = array(mainFile),
-                    newParent = JavaPsiFacade.getInstance(project).findPackage(targetPackage)!!.getDirectories()[0],
-                    searchInComments = false,
-                    searchInNonJavaFiles = true,
-                    moveCallback = null,
-                    prepareSuccessfulCallback = null
-            ).run()
+            val targetPackage = config.getNullableString("targetPackage")
+            if (targetPackage != null) {
+                MoveFilesOrDirectoriesProcessor(
+                        project = project,
+                        elements = array(mainFile),
+                        newParent = JavaPsiFacade.getInstance(project).findPackage(targetPackage)!!.getDirectories()[0],
+                        searchInComments = false,
+                        searchInNonJavaFiles = true,
+                        moveCallback = null,
+                        prepareSuccessfulCallback = null
+                ).run()
+            }
+            else {
+                val targetFile = config.getString("targetFile")
+
+                MoveHandler.doMove(
+                        project = project,
+                        elements = array(mainFile),
+                        targetContainer = PsiManager.getInstance(project).findFile(rootDir.findFileByRelativePath(targetFile)!!)!!,
+                        dataContext = null,
+                        callback = null
+                )
+            }
         }
     }
 
-    abstract fun runRefactoring(mainFile: PsiFile, elementAtCaret: PsiElement?, config: JsonObject)
+    abstract fun runRefactoring(rootDir: VirtualFile, mainFile: PsiFile, elementAtCaret: PsiElement?, config: JsonObject)
 }

idea/tests/org/jetbrains/jet/plugin/refactoring/move/JetMoveTestGenerated.java

@@ -171,6 +171,11 @@ public class JetMoveTestGenerated extends AbstractJetMoveTest {
         doTest("idea/testData/refactoring/move/java/movePackage/movePackageToAnotherPackage/movePackageToAnotherPackage.test");
     }
     
+    @TestMetadata("kotlin/moveFile/moveFileToFile/moveFileToFile.test")
+    public void testKotlin_moveFile_moveFileToFile_MoveFileToFile() throws Exception {
+        doTest("idea/testData/refactoring/move/kotlin/moveFile/moveFileToFile/moveFileToFile.test");
+    }
+    
     @TestMetadata("kotlin/movePackage/movePackage/movePackage.test")
     public void testKotlin_movePackage_movePackage_MovePackage() throws Exception {
         doTest("idea/testData/refactoring/move/kotlin/movePackage/movePackage/movePackage.test");