Copy: Support class copying

#KT-8180 Fixed
 #KT-9054 Fixed

generators/src/org/jetbrains/kotlin/generators/tests/GenerateTests.kt

@@ -115,6 +115,7 @@ import org.jetbrains.kotlin.idea.parameterInfo.AbstractParameterInfoTest
 import org.jetbrains.kotlin.idea.quickfix.AbstractQuickFixMultiFileTest
 import org.jetbrains.kotlin.idea.quickfix.AbstractQuickFixTest
 import org.jetbrains.kotlin.idea.refactoring.AbstractNameSuggestionProviderTest
+import org.jetbrains.kotlin.idea.refactoring.copy.AbstractCopyTest
 import org.jetbrains.kotlin.idea.refactoring.inline.AbstractInlineTest
 import org.jetbrains.kotlin.idea.refactoring.introduce.AbstractExtractionTest
 import org.jetbrains.kotlin.idea.refactoring.move.AbstractMoveTest
@@ -745,6 +746,10 @@ fun main(args: Array<String>) {
             model("refactoring/move", extension = "test", singleClass = true)
         }
 
+        testClass<AbstractCopyTest> {
+            model("refactoring/copy", extension = "test", singleClass = true)
+        }
+
         testClass<AbstractMultiModuleMoveTest> {
             model("refactoring/moveMultiModule", extension = "test", singleClass = true)
         }

idea/src/META-INF/plugin.xml

@@ -396,7 +396,14 @@
     <refactoring.moveInnerClassUsagesHandler
         implementationClass="org.jetbrains.kotlin.idea.refactoring.move.MoveJavaInnerClassKotlinUsagesHandler"
         language="kotlin" />
-    <refactoring.copyHandler implementation="org.jetbrains.kotlin.idea.refactoring.copy.CopyKotlinFileHandler" order="first" />
+    <refactoring.copyHandler
+        id="kotlinClass"
+        implementation="org.jetbrains.kotlin.idea.refactoring.copy.CopyKotlinClassHandler"
+        order="first" />
+    <refactoring.copyHandler
+        id="kotlinFile"
+        implementation="org.jetbrains.kotlin.idea.refactoring.copy.CopyKotlinFileHandler"
+        order="after kotlinClass" />
     <refactoring.changeSignatureUsageProcessor
         implementation="org.jetbrains.kotlin.idea.refactoring.changeSignature.KotlinChangeSignatureUsageProcessor"
         order="after javaProcessor" />

idea/src/org/jetbrains/kotlin/idea/refactoring/copy/CopyKotlinClassDialog.kt

@@ -0,0 +1,178 @@
+/*
+ * Copyright 2010-2017 JetBrains s.r.o.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.jetbrains.kotlin.idea.refactoring.copy
+
+import com.intellij.openapi.project.Project
+import com.intellij.openapi.roots.JavaProjectRootsUtil
+import com.intellij.openapi.ui.DialogWrapper
+import com.intellij.openapi.ui.Messages
+import com.intellij.psi.PsiDirectory
+import com.intellij.psi.PsiManager
+import com.intellij.refactoring.HelpID
+import com.intellij.refactoring.MoveDestination
+import com.intellij.refactoring.PackageWrapper
+import com.intellij.refactoring.RefactoringBundle
+import com.intellij.refactoring.copy.CopyFilesOrDirectoriesDialog
+import com.intellij.refactoring.move.moveClassesOrPackages.DestinationFolderComboBox
+import com.intellij.refactoring.ui.PackageNameReferenceEditorCombo
+import com.intellij.ui.EditorTextField
+import com.intellij.ui.RecentsManager
+import com.intellij.ui.ReferenceEditorComboWithBrowseButton
+import com.intellij.usageView.UsageViewUtil
+import com.intellij.util.IncorrectOperationException
+import com.intellij.util.ui.FormBuilder
+import com.intellij.util.ui.UIUtil
+import org.jetbrains.annotations.NonNls
+import org.jetbrains.kotlin.idea.core.getPackage
+import org.jetbrains.kotlin.idea.refactoring.Pass
+import org.jetbrains.kotlin.idea.refactoring.hasIdentifiersOnly
+import org.jetbrains.kotlin.name.FqNameUnsafe
+import org.jetbrains.kotlin.psi.KtClassOrObject
+import java.awt.BorderLayout
+import java.awt.Font
+import javax.swing.JComponent
+import javax.swing.JLabel
+import javax.swing.JPanel
+
+// Based on com.intellij.refactoring.copy.CopyClassDialog
+class CopyKotlinClassDialog(
+        klass: KtClassOrObject,
+        private val defaultTargetDirectory: PsiDirectory?,
+        private val project: Project
+) : DialogWrapper(project, true) {
+    private val informationLabel = JLabel()
+    private val classNameField = EditorTextField("")
+    private val packageLabel = JLabel()
+    private lateinit var packageNameField: ReferenceEditorComboWithBrowseButton
+    private val openInEditorCheckBox = CopyFilesOrDirectoriesDialog.createOpenInEditorCB()
+    private val destinationComboBox = object : DestinationFolderComboBox() {
+        override fun getTargetPackage() = packageNameField.text.trim()
+        override fun reportBaseInTestSelectionInSource() = true
+    }
+
+    private val originalFile = klass.containingFile
+
+    var targetDirectory: MoveDestination? = null
+        private set
+
+    init {
+        informationLabel.text = RefactoringBundle.message("copy.class.copy.0.1", UsageViewUtil.getType(klass), UsageViewUtil.getLongName(klass))
+        informationLabel.font = informationLabel.font.deriveFont(Font.BOLD)
+
+        init()
+
+        destinationComboBox.setData(
+                project,
+                defaultTargetDirectory,
+                Pass { setErrorText(it, destinationComboBox) },
+                packageNameField.childComponent
+        )
+        classNameField.text = UsageViewUtil.getShortName(klass)
+        classNameField.selectAll()
+    }
+
+    override fun getPreferredFocusedComponent() = classNameField
+
+    override fun createCenterPanel() = JPanel(BorderLayout())
+
+    override fun createNorthPanel(): JComponent? {
+        val qualifiedName = qualifiedName
+        packageNameField = PackageNameReferenceEditorCombo(qualifiedName, project, RECENTS_KEY, RefactoringBundle.message("choose.destination.package"))
+        packageNameField.setTextFieldPreferredWidth(Math.max(qualifiedName.length + 5, 40))
+        packageLabel.text = RefactoringBundle.message("destination.package")
+        packageLabel.labelFor = packageNameField
+
+        val label = JLabel(RefactoringBundle.message("target.destination.folder"))
+        val isMultipleSourceRoots = JavaProjectRootsUtil.getSuitableDestinationSourceRoots(project).size > 1
+        destinationComboBox.isVisible = isMultipleSourceRoots
+        label.isVisible = isMultipleSourceRoots
+        label.labelFor = destinationComboBox
+
+        val panel = JPanel(BorderLayout())
+        panel.add(openInEditorCheckBox, BorderLayout.EAST)
+        return FormBuilder.createFormBuilder()
+                .addComponent(informationLabel)
+                .addLabeledComponent(RefactoringBundle.message("copy.files.new.name.label"), classNameField, UIUtil.LARGE_VGAP)
+                .addLabeledComponent(packageLabel, packageNameField)
+                .addLabeledComponent(label, destinationComboBox)
+                .addComponent(panel)
+                .panel
+    }
+
+    private val qualifiedName: String
+        get() = defaultTargetDirectory?.getPackage()?.qualifiedName ?: ""
+
+    val className: String?
+        get() = classNameField.text
+
+    val openInEditor: Boolean
+        get() = openInEditorCheckBox.isSelected
+
+    private fun checkForErrors(): String? {
+        val packageName = packageNameField.text
+        val className = className
+
+        val manager = PsiManager.getInstance(project)
+
+        if (packageName.isNotEmpty() && !FqNameUnsafe(packageName).hasIdentifiersOnly()) {
+            return RefactoringBundle.message("invalid.target.package.name.specified")
+        }
+
+        if (className.isNullOrEmpty()) {
+            return RefactoringBundle.message("no.class.name.specified")
+        }
+
+        try {
+            targetDirectory = destinationComboBox.selectDirectory(PackageWrapper(manager, packageName), false)
+        }
+        catch (e: IncorrectOperationException) {
+            return e.message
+        }
+
+        targetDirectory?.getTargetIfExists(defaultTargetDirectory)?.let {
+            val targetFileName = className + "." + originalFile.virtualFile.extension
+            if (it.findFile(targetFileName) == originalFile) {
+                return "Can't copy class to the containing file"
+            }
+        }
+
+        return null
+    }
+
+    override fun doOKAction() {
+        val packageName = packageNameField.text
+
+        val errorString = checkForErrors()
+        if (errorString != null) {
+            if (errorString.isNotEmpty()) {
+                Messages.showMessageDialog(project, errorString, RefactoringBundle.message("error.title"), Messages.getErrorIcon())
+            }
+            classNameField.requestFocusInWindow()
+            return
+        }
+
+        RecentsManager.getInstance(project).registerRecentEntry(RECENTS_KEY, packageName)
+        CopyFilesOrDirectoriesDialog.saveOpenInEditorState(openInEditorCheckBox.isSelected)
+
+        super.doOKAction()
+    }
+
+    override fun getHelpId() = HelpID.COPY_CLASS
+
+    companion object {
+        @NonNls private val RECENTS_KEY = "CopyKotlinClassDialog.RECENTS_KEY"
+    }
+}

idea/src/org/jetbrains/kotlin/idea/refactoring/copy/CopyKotlinClassHandler.kt

@@ -0,0 +1,222 @@
+/*
+ * Copyright 2010-2017 JetBrains s.r.o.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.jetbrains.kotlin.idea.refactoring.copy
+
+import com.intellij.ide.util.EditorHelper
+import com.intellij.openapi.application.ApplicationManager
+import com.intellij.openapi.project.Project
+import com.intellij.openapi.roots.ProjectRootManager
+import com.intellij.openapi.ui.Messages
+import com.intellij.openapi.util.Key
+import com.intellij.psi.PsiDirectory
+import com.intellij.psi.PsiElement
+import com.intellij.psi.PsiFile
+import com.intellij.refactoring.MoveDestination
+import com.intellij.refactoring.RefactoringBundle
+import com.intellij.refactoring.copy.CopyHandlerDelegateBase
+import com.intellij.refactoring.rename.RenameProcessor
+import com.intellij.refactoring.util.MoveRenameUsageInfo
+import com.intellij.usageView.UsageInfo
+import com.intellij.util.IncorrectOperationException
+import org.jetbrains.annotations.TestOnly
+import org.jetbrains.kotlin.idea.codeInsight.shorten.performDelayedRefactoringRequests
+import org.jetbrains.kotlin.idea.core.getPackage
+import org.jetbrains.kotlin.idea.core.quoteIfNeeded
+import org.jetbrains.kotlin.idea.refactoring.createKotlinFile
+import org.jetbrains.kotlin.idea.refactoring.move.*
+import org.jetbrains.kotlin.idea.util.application.executeCommand
+import org.jetbrains.kotlin.idea.util.application.runReadAction
+import org.jetbrains.kotlin.idea.util.application.runWriteAction
+import org.jetbrains.kotlin.name.FqName
+import org.jetbrains.kotlin.psi.KtClassOrObject
+import org.jetbrains.kotlin.psi.KtFile
+import org.jetbrains.kotlin.psi.UserDataProperty
+import org.jetbrains.kotlin.psi.psiUtil.isAncestor
+import org.jetbrains.kotlin.psi.psiUtil.parentsWithSelf
+
+class CopyKotlinClassHandler : CopyHandlerDelegateBase() {
+    companion object {
+        @set:TestOnly
+        var Project.newName: String? by UserDataProperty(Key.create("NEW_NAME"))
+
+        private fun PsiElement.getTopLevelClass(): KtClassOrObject? {
+            val classOrFile = parentsWithSelf.firstOrNull { it is KtFile || (it is KtClassOrObject && it.isTopLevel()) }
+            return when (classOrFile) {
+                is KtFile -> classOrFile.declarations.singleOrNull() as? KtClassOrObject
+                is KtClassOrObject -> classOrFile
+                else -> null
+            }
+        }
+
+        private fun getClassToCopy(elements: Array<out PsiElement>) = elements.singleOrNull()?.getTopLevelClass()
+    }
+
+    override fun canCopy(elements: Array<out PsiElement>, fromUpdate: Boolean) = getClassToCopy(elements) != null
+
+    enum class ExistingFilePolicy {
+        APPEND, OVERWRITE, SKIP
+    }
+
+    private fun getOrCreateTargetFile(
+            originalFile: KtFile,
+            targetDirectory: PsiDirectory,
+            targetFileName: String,
+            commandName: String
+    ): KtFile? {
+        val existingFile = targetDirectory.findFile(targetFileName)
+        if (existingFile == originalFile) return null
+        if (existingFile != null) {
+            val policy = getFilePolicy(existingFile, targetFileName, targetDirectory, commandName)
+            when (policy) {
+                ExistingFilePolicy.APPEND -> {}
+                ExistingFilePolicy.OVERWRITE -> runWriteAction { existingFile.delete() }
+                ExistingFilePolicy.SKIP -> return null
+            }
+        }
+        return runWriteAction {
+            if (existingFile != null && existingFile.isValid) {
+                existingFile as KtFile
+            } else {
+                createKotlinFile(targetFileName, targetDirectory)
+            }
+        }
+    }
+
+    private fun getFilePolicy(
+            existingFile: PsiFile?,
+            targetFileName: String,
+            targetDirectory: PsiDirectory,
+            commandName: String
+    ): ExistingFilePolicy {
+        val isUnitTestMode = ApplicationManager.getApplication().isUnitTestMode
+        return if (existingFile !is KtFile) {
+            if (isUnitTestMode) return ExistingFilePolicy.OVERWRITE
+
+            val answer = Messages.showOkCancelDialog(
+                    "File $targetFileName already exists in ${targetDirectory.virtualFile.path}",
+                    commandName,
+                    "Overwrite",
+                    "Cancel",
+                    Messages.getQuestionIcon()
+            )
+            if (answer == Messages.OK) ExistingFilePolicy.OVERWRITE else ExistingFilePolicy.SKIP
+        }
+        else {
+            if (isUnitTestMode) return ExistingFilePolicy.APPEND
+
+            val answer = Messages.showYesNoCancelDialog(
+                    "File $targetFileName already exists in ${targetDirectory.virtualFile.path}",
+                    commandName,
+                    "Append",
+                    "Overwrite",
+                    "Cancel",
+                    Messages.getQuestionIcon()
+            )
+            when (answer) {
+                Messages.YES -> ExistingFilePolicy.APPEND
+                Messages.NO -> ExistingFilePolicy.OVERWRITE
+                else -> ExistingFilePolicy.SKIP
+            }
+        }
+    }
+
+    override fun doCopy(elements: Array<out PsiElement>, defaultTargetDirectory: PsiDirectory?) {
+        val classToCopy = getClassToCopy(elements) ?: return
+
+        val originalFile = classToCopy.containingKtFile
+        val initialTargetDirectory = defaultTargetDirectory ?: originalFile.containingDirectory ?: return
+
+        val project = initialTargetDirectory.project
+
+        if (ProjectRootManager.getInstance(project).fileIndex.getSourceRootForFile(initialTargetDirectory.virtualFile) == null) return
+
+        val commandName = RefactoringBundle.message("copy.handler.copy.class")
+
+        var openInEditor = false
+        var newClassName: String? = classToCopy.name
+        var moveDestination: MoveDestination? = null
+
+        if (!ApplicationManager.getApplication().isUnitTestMode) {
+            val dialog = CopyKotlinClassDialog(classToCopy, initialTargetDirectory, project)
+            dialog.title = commandName
+            if (!dialog.showAndGet()) return
+
+            openInEditor = dialog.openInEditor
+            newClassName = dialog.className
+            moveDestination = dialog.targetDirectory ?: return
+        }
+        else {
+            project.newName?.let { newClassName = it }
+        }
+
+        if (newClassName.isNullOrEmpty()) return
+
+        val internalUsages = runReadAction {
+            val targetPackageName = moveDestination?.targetPackage?.qualifiedName
+                                    ?: initialTargetDirectory.getPackage()?.qualifiedName
+                                    ?: ""
+            val changeInfo = ContainerChangeInfo(
+                    ContainerInfo.Package(originalFile.packageFqName),
+                    ContainerInfo.Package(FqName(targetPackageName))
+            )
+            classToCopy
+                    .getInternalReferencesToUpdateOnPackageNameChange(changeInfo)
+                    .filter {
+                        val referencedElement = (it as? MoveRenameUsageInfo)?.referencedElement
+                        referencedElement == null || !classToCopy.isAncestor(referencedElement)
+                    }
+        }
+        markInternalUsages(internalUsages)
+
+        val restoredInternalUsages = ArrayList<UsageInfo>()
+
+        project.executeCommand(commandName) {
+            try {
+                val targetDirectory = runWriteAction { moveDestination?.getTargetDirectory(initialTargetDirectory) ?: initialTargetDirectory }
+                val targetFileName = newClassName + "." + originalFile.virtualFile.extension
+
+                val targetFile = getOrCreateTargetFile(originalFile, targetDirectory, targetFileName, commandName) ?: return@executeCommand
+
+                val newClass = runWriteAction {
+                    val newClass = targetFile.add(classToCopy.copy()) as KtClassOrObject
+                    val oldToNewElementsMapping: Map<PsiElement, PsiElement> = mapOf(classToCopy to newClass)
+                    restoredInternalUsages += restoreInternalUsages(newClass, oldToNewElementsMapping, true)
+                    postProcessMoveUsages(restoredInternalUsages, oldToNewElementsMapping)
+                    performDelayedRefactoringRequests(project)
+
+                    newClass
+                }
+
+                RenameProcessor(project, newClass, newClassName!!.quoteIfNeeded(), false, false).run()
+
+                if (openInEditor) {
+                    EditorHelper.openFilesInEditor(arrayOf(targetFile))
+                }
+            }
+            catch (e: IncorrectOperationException) {
+                Messages.showMessageDialog(project, e.message, RefactoringBundle.message("error.title"), Messages.getErrorIcon())
+            }
+            finally {
+                cleanUpInternalUsages(internalUsages + restoredInternalUsages)
+            }
+        }
+    }
+
+    override fun doClone(element: PsiElement) {
+
+    }
+}

idea/src/org/jetbrains/kotlin/idea/refactoring/move/moveDeclarations/MoveKotlinDeclarationsProcessor.kt

@@ -18,7 +18,6 @@ package org.jetbrains.kotlin.idea.refactoring.move.moveDeclarations
 
 import com.intellij.ide.util.EditorHelper
 import com.intellij.openapi.project.Project
-import com.intellij.openapi.util.Key
 import com.intellij.openapi.util.Ref
 import com.intellij.openapi.util.text.StringUtil
 import com.intellij.psi.PsiElement
@@ -30,7 +29,6 @@ import com.intellij.refactoring.move.MoveCallback
 import com.intellij.refactoring.move.MoveMultipleElementsViewDescriptor
 import com.intellij.refactoring.move.moveClassesOrPackages.MoveClassHandler
 import com.intellij.refactoring.rename.RenameUtil
-import com.intellij.refactoring.util.MoveRenameUsageInfo
 import com.intellij.refactoring.util.NonCodeUsageInfo
 import com.intellij.refactoring.util.RefactoringUIUtil
 import com.intellij.refactoring.util.TextOccurrencesUtil
@@ -51,7 +49,6 @@ import org.jetbrains.kotlin.idea.refactoring.move.*
 import org.jetbrains.kotlin.idea.refactoring.move.moveFilesOrDirectories.MoveKotlinClassHandler
 import org.jetbrains.kotlin.idea.search.projectScope
 import org.jetbrains.kotlin.psi.*
-import org.jetbrains.kotlin.psi.psiUtil.collectDescendantsOfType
 import org.jetbrains.kotlin.psi.psiUtil.containingClassOrObject
 import org.jetbrains.kotlin.psi.psiUtil.getElementTextWithContext
 import org.jetbrains.kotlin.psi.psiUtil.isAncestor
@@ -83,8 +80,6 @@ interface Mover : (KtNamedDeclaration, KtElement) -> KtNamedDeclaration {
     }
 }
 
-internal var KtSimpleNameExpression.internalUsageInfo: UsageInfo? by CopyableUserDataProperty(Key.create("INTERNAL_USAGE_INFO"))
-
 class MoveDeclarationsDescriptor @JvmOverloads constructor(
         val project: Project,
         val elementsToMove: Collection<KtNamedDeclaration>,
@@ -245,7 +240,7 @@ class MoveKotlinDeclarationsProcessor(
         val (oldInternalUsages, externalUsages) = usages.partition { it is KotlinMoveUsage && it.isInternal }
         val newInternalUsages = ArrayList<UsageInfo>()
 
-        oldInternalUsages.forEach { (it.element as? KtSimpleNameExpression)?.internalUsageInfo = it }
+        markInternalUsages(oldInternalUsages)
 
         val usagesToProcess = ArrayList(externalUsages)
 
@@ -281,16 +276,7 @@ class MoveKotlinDeclarationsProcessor(
                 }
             }
 
-            newDeclarations.forEach { newDeclaration ->
-                newInternalUsages += newDeclaration.collectDescendantsOfType<KtSimpleNameExpression>().mapNotNull {
-                    val usageInfo = it.internalUsageInfo
-                    if (usageInfo?.element != null) return@mapNotNull usageInfo
-                    val referencedElement = (usageInfo as? MoveRenameUsageInfo)?.referencedElement ?: return@mapNotNull null
-                    val newReferencedElement = mapToNewOrThis(referencedElement, oldToNewElementsMapping)
-                    if (!newReferencedElement.isValid) return@mapNotNull null
-                    (usageInfo as? KotlinMoveUsage)?.refresh(it, newReferencedElement)
-                }
-            }
+            newDeclarations.forEach { newInternalUsages += restoreInternalUsages(it, oldToNewElementsMapping) }
 
             usagesToProcess += newInternalUsages
 
@@ -301,9 +287,7 @@ class MoveKotlinDeclarationsProcessor(
             RefactoringUIUtil.processIncorrectOperation(myProject, e)
         }
         finally {
-            (newInternalUsages + oldInternalUsages).forEach {
-                (it.element as? KtSimpleNameExpression)?.internalUsageInfo = null
-            }
+            cleanUpInternalUsages(newInternalUsages + oldInternalUsages)
         }
     }
 

idea/src/org/jetbrains/kotlin/idea/refactoring/move/moveUtils.kt

@@ -181,6 +181,31 @@ fun KtElement.processInternalReferencesToUpdateOnPackageNameChange(
     }
 }
 
+internal var KtSimpleNameExpression.internalUsageInfo: UsageInfo? by CopyableUserDataProperty(Key.create("INTERNAL_USAGE_INFO"))
+
+internal fun markInternalUsages(usages: Collection<UsageInfo>) {
+    usages.forEach { (it.element as? KtSimpleNameExpression)?.internalUsageInfo = it }
+}
+
+internal fun restoreInternalUsages(
+        scope: KtElement,
+        oldToNewElementsMapping: Map<PsiElement, PsiElement>,
+        forcedRestore: Boolean = false
+): List<UsageInfo> {
+    return scope.collectDescendantsOfType<KtSimpleNameExpression>().mapNotNull {
+        val usageInfo = it.internalUsageInfo
+        if (!forcedRestore && usageInfo?.element != null) return@mapNotNull usageInfo
+        val referencedElement = (usageInfo as? MoveRenameUsageInfo)?.referencedElement ?: return@mapNotNull null
+        val newReferencedElement = mapToNewOrThis(referencedElement, oldToNewElementsMapping)
+        if (!newReferencedElement.isValid) return@mapNotNull null
+        (usageInfo as? KotlinMoveUsage)?.refresh(it, newReferencedElement)
+    }
+}
+
+internal fun cleanUpInternalUsages(usages: Collection<UsageInfo>) {
+    usages.forEach { (it.element as? KtSimpleNameExpression)?.internalUsageInfo = null }
+}
+
 class ImplicitCompanionAsDispatchReceiverUsageInfo(
         callee: KtSimpleNameExpression,
         val companionDescriptor: ClassDescriptor

idea/testData/refactoring/copy/copyClassCaretInside/after/bar/A.kt

@@ -0,0 +1,8 @@
+package bar
+
+import foo.B
+
+class A {
+    val a: A = A()
+    val b: B = B()
+}

idea/testData/refactoring/copy/copyClassCaretInside/after/foo/test.kt

@@ -0,0 +1,11 @@
+package foo
+
+class A {
+    val a: A = A()
+    val b: B = B()
+}
+
+class B {
+    val a: A = A()
+    val b: B = B()
+}

idea/testData/refactoring/copy/copyClassCaretInside/before/foo/test.kt

@@ -0,0 +1,11 @@
+package foo
+
+class A {
+    val a: <caret>A = A()
+    val b: B = B()
+}
+
+class B {
+    val a: A = A()
+    val b: B = B()
+}

idea/testData/refactoring/copy/copyClassCaretInside/copyClassCaretInside.test

@@ -0,0 +1,4 @@
+{
+  "mainFile": "foo/test.kt",
+  "targetPackage": "bar"
+}

idea/testData/refactoring/copy/copyClassToExistingFile/after/bar/A.kt

@@ -0,0 +1,12 @@
+package bar
+
+import foo.B
+
+fun foo() {
+
+}
+
+class A {
+    val a: A = A()
+    val b: B = B()
+}

idea/testData/refactoring/copy/copyClassToExistingFile/after/foo/test.kt

@@ -0,0 +1,11 @@
+package foo
+
+class A {
+    val a: A = A()
+    val b: B = B()
+}
+
+class B {
+    val a: A = A()
+    val b: B = B()
+}

idea/testData/refactoring/copy/copyClassToExistingFile/before/bar/A.kt

@@ -0,0 +1,5 @@
+package bar
+
+fun foo() {
+
+}

idea/testData/refactoring/copy/copyClassToExistingFile/before/foo/test.kt

@@ -0,0 +1,11 @@
+package foo
+
+class <caret>A {
+    val a: A = A()
+    val b: B = B()
+}
+
+class B {
+    val a: A = A()
+    val b: B = B()
+}

idea/testData/refactoring/copy/copyClassToExistingFile/copyClassToExistingFile.test

@@ -0,0 +1,4 @@
+{
+  "mainFile": "foo/test.kt",
+  "targetPackage": "bar"
+}

idea/testData/refactoring/copy/copyClassToNewFile/after/bar/A.kt

@@ -0,0 +1,8 @@
+package bar
+
+import foo.B
+
+class A {
+    val a: A = A()
+    val b: B = B()
+}

idea/testData/refactoring/copy/copyClassToNewFile/after/foo/test.kt

@@ -0,0 +1,11 @@
+package foo
+
+class A {
+    val a: A = A()
+    val b: B = B()
+}
+
+class B {
+    val a: A = A()
+    val b: B = B()
+}

idea/testData/refactoring/copy/copyClassToNewFile/before/foo/test.kt

@@ -0,0 +1,11 @@
+package foo
+
+class <caret>A {
+    val a: A = A()
+    val b: B = B()
+}
+
+class B {
+    val a: A = A()
+    val b: B = B()
+}

idea/testData/refactoring/copy/copyClassToNewFile/copyClassToNewFile.test

@@ -0,0 +1,4 @@
+{
+  "mainFile": "foo/test.kt",
+  "targetPackage": "bar"
+}

idea/testData/refactoring/copy/copyClassWithCompanionRefs/after/bar/A.kt

@@ -0,0 +1,15 @@
+package bar
+
+class A {
+    fun test() {
+        A.testCompanion()
+        testCompanion()
+        Companion.testCompanion()
+    }
+
+    companion object {
+        fun testCompanion() {
+
+        }
+    }
+}

idea/testData/refactoring/copy/copyClassWithCompanionRefs/after/foo/test.kt

@@ -0,0 +1,15 @@
+package foo
+
+class A {
+    fun test() {
+        A.testCompanion()
+        testCompanion()
+        Companion.testCompanion()
+    }
+
+    companion object {
+        fun testCompanion() {
+
+        }
+    }
+}

idea/testData/refactoring/copy/copyClassWithCompanionRefs/before/foo/test.kt

@@ -0,0 +1,15 @@
+package foo
+
+class <caret>A {
+    fun test() {
+        A.testCompanion()
+        testCompanion()
+        Companion.testCompanion()
+    }
+
+    companion object {
+        fun testCompanion() {
+
+        }
+    }
+}

idea/testData/refactoring/copy/copyClassWithCompanionRefs/copyClassWithCompanionRefs.test

@@ -0,0 +1,4 @@
+{
+  "mainFile": "foo/test.kt",
+  "targetPackage": "bar"
+}

idea/testData/refactoring/copy/copyClassWithRename/after/bar/X.kt

@@ -0,0 +1,8 @@
+package bar
+
+import foo.B
+
+class X {
+    val a: X = X()
+    val b: B = B()
+}

idea/testData/refactoring/copy/copyClassWithRename/after/foo/test.kt

@@ -0,0 +1,11 @@
+package foo
+
+class A {
+    val a: A = A()
+    val b: B = B()
+}
+
+class B {
+    val a: A = A()
+    val b: B = B()
+}

idea/testData/refactoring/copy/copyClassWithRename/before/foo/test.kt

@@ -0,0 +1,11 @@
+package foo
+
+class <caret>A {
+    val a: A = A()
+    val b: B = B()
+}
+
+class B {
+    val a: A = A()
+    val b: B = B()
+}

idea/testData/refactoring/copy/copyClassWithRename/copyClassWithRename.test

@@ -0,0 +1,5 @@
+{
+  "mainFile": "foo/test.kt",
+  "targetPackage": "bar",
+  "newName": "X"
+}

idea/testData/refactoring/copy/copyNestedClass/after/bar/A.kt

@@ -0,0 +1,5 @@
+package bar
+
+class A {
+    class B
+}

idea/testData/refactoring/copy/copyNestedClass/after/foo/test.kt

@@ -0,0 +1,5 @@
+package foo
+
+class A {
+    class B
+}

idea/testData/refactoring/copy/copyNestedClass/before/foo/test.kt

@@ -0,0 +1,5 @@
+package foo
+
+class A {
+    class <caret>B
+}

idea/testData/refactoring/copy/copyNestedClass/copyNestedClass.test

@@ -0,0 +1,4 @@
+{
+  "mainFile": "foo/test.kt",
+  "targetPackage": "bar"
+}

idea/testData/refactoring/copy/copyObject/after/bar/A.kt

@@ -0,0 +1,8 @@
+package bar
+
+import foo.B
+
+object A {
+    val a: A = A
+    val b: B = B()
+}

idea/testData/refactoring/copy/copyObject/after/foo/test.kt

@@ -0,0 +1,11 @@
+package foo
+
+object A {
+    val a: A = A
+    val b: B = B()
+}
+
+class B {
+    val a: A = A
+    val b: B = B()
+}

idea/testData/refactoring/copy/copyObject/before/foo/test.kt

@@ -0,0 +1,11 @@
+package foo
+
+object <caret>A {
+    val a: A = A
+    val b: B = B()
+}
+
+class B {
+    val a: A = A
+    val b: B = B()
+}

idea/testData/refactoring/copy/copyObject/copyObject.test

@@ -0,0 +1,4 @@
+{
+  "mainFile": "foo/test.kt",
+  "targetPackage": "bar"
+}

idea/testData/refactoring/copy/copySingleClassFile/after/bar/A.kt

@@ -0,0 +1,3 @@
+package bar
+
+class A

idea/testData/refactoring/copy/copySingleClassFile/after/foo/test.kt

@@ -0,0 +1,3 @@
+package foo
+
+class A

idea/testData/refactoring/copy/copySingleClassFile/before/foo/test.kt

@@ -0,0 +1,3 @@
+package foo
+
+class A

idea/testData/refactoring/copy/copySingleClassFile/copySingleClassFile.test

@@ -0,0 +1,4 @@
+{
+  "mainFile": "foo/test.kt",
+  "targetPackage": "bar"
+}

idea/tests/org/jetbrains/kotlin/idea/refactoring/AbstractMultifileRefactoringTest.kt

@@ -0,0 +1,146 @@
+/*
+ * Copyright 2010-2017 JetBrains s.r.o.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.jetbrains.kotlin.idea.refactoring
+
+import com.google.gson.JsonObject
+import com.google.gson.JsonParser
+import com.intellij.codeInsight.TargetElementUtil
+import com.intellij.openapi.editor.EditorFactory
+import com.intellij.openapi.fileEditor.FileDocumentManager
+import com.intellij.openapi.project.Project
+import com.intellij.openapi.util.io.FileUtil
+import com.intellij.openapi.vfs.LocalFileSystem
+import com.intellij.openapi.vfs.VirtualFile
+import com.intellij.psi.PsiDocumentManager
+import com.intellij.psi.PsiElement
+import com.intellij.psi.PsiFile
+import com.intellij.psi.PsiManager
+import com.intellij.refactoring.BaseRefactoringProcessor
+import com.intellij.testFramework.LightProjectDescriptor
+import com.intellij.testFramework.PlatformTestUtil
+import com.intellij.testFramework.UsefulTestCase
+import org.jetbrains.kotlin.idea.jsonUtils.getNullableString
+import org.jetbrains.kotlin.idea.jsonUtils.getString
+import org.jetbrains.kotlin.idea.refactoring.move.MoveAction
+import org.jetbrains.kotlin.idea.refactoring.move.runMoveRefactoring
+import org.jetbrains.kotlin.idea.refactoring.rename.loadTestConfiguration
+import org.jetbrains.kotlin.idea.test.KotlinLightCodeInsightFixtureTestCase
+import org.jetbrains.kotlin.idea.test.KotlinLightProjectDescriptor
+import org.jetbrains.kotlin.idea.test.KotlinWithJdkAndRuntimeLightProjectDescriptor
+import org.jetbrains.kotlin.idea.test.extractMultipleMarkerOffsets
+import org.jetbrains.kotlin.test.KotlinTestUtils
+import java.io.File
+
+abstract class AbstractMultifileRefactoringTest : KotlinLightCodeInsightFixtureTestCase() {
+    interface RefactoringAction {
+        fun runRefactoring(rootDir: VirtualFile, mainFile: PsiFile, elementsAtCaret: List<PsiElement>, config: JsonObject)
+    }
+
+    override fun getProjectDescriptor(): LightProjectDescriptor {
+        if (KotlinTestUtils.isAllFilesPresentTest(getTestName(false))) return super.getProjectDescriptor()
+
+        val testConfigurationFile = File(super.getTestDataPath(), fileName())
+        val config = loadTestConfiguration(testConfigurationFile)
+        val withRuntime = config["withRuntime"]?.asBoolean ?: false
+        if (withRuntime) {
+            return KotlinWithJdkAndRuntimeLightProjectDescriptor.INSTANCE
+        }
+        return KotlinLightProjectDescriptor.INSTANCE
+    }
+
+    protected abstract fun runRefactoring(path: String, config: JsonObject, rootDir: VirtualFile, project: Project)
+
+    protected fun doTest(path: String) {
+        val testFile = File(path)
+        val config = JsonParser().parse(FileUtil.loadFile(testFile, true)) as JsonObject
+
+        doTestCommittingDocuments(testFile) { rootDir ->
+            runRefactoring(path, config, rootDir, project)
+        }
+    }
+
+    protected fun getTestDirName(lowercaseFirstLetter : Boolean) : String {
+        val testName = getTestName(lowercaseFirstLetter)
+        val endIndex = testName.lastIndexOf('_')
+        if (endIndex < 0) return testName
+        return testName.substring(0, endIndex).replace('_', '/')
+    }
+
+    override fun getTestDataPath() = super.getTestDataPath() + "/" + getTestDirName(true)
+
+    protected fun doTestCommittingDocuments(testFile: File, action: (VirtualFile) -> Unit) {
+        val beforeVFile = myFixture.copyDirectoryToProject("before", "")
+        PsiDocumentManager.getInstance(myFixture.project).commitAllDocuments()
+
+        val afterDir = File(testFile.parentFile, "after")
+        val afterVFile = LocalFileSystem.getInstance().findFileByIoFile(afterDir)?.apply {
+            UsefulTestCase.refreshRecursively(this)
+        }
+
+        action(beforeVFile)
+
+        PsiDocumentManager.getInstance(project).commitAllDocuments()
+        FileDocumentManager.getInstance().saveAllDocuments()
+        PlatformTestUtil.assertDirectoriesEqual(afterVFile, beforeVFile)
+    }
+}
+
+fun runRefactoringTest(
+        path: String,
+        config: JsonObject,
+        rootDir: VirtualFile,
+        project: Project,
+        action: AbstractMultifileRefactoringTest.RefactoringAction
+) {
+    val testDir = path.substring(0, path.lastIndexOf("/"))
+    val mainFilePath = config.getNullableString("mainFile") ?: config.getAsJsonArray("filesToMove").first().asString
+
+    val conflictFile = File(testDir + "/conflicts.txt")
+
+    val mainFile = rootDir.findFileByRelativePath(mainFilePath)!!
+    val mainPsiFile = PsiManager.getInstance(project).findFile(mainFile)!!
+    val document = FileDocumentManager.getInstance().getDocument(mainFile)!!
+    val editor = EditorFactory.getInstance()!!.createEditor(document, project)!!
+
+    val caretOffsets = document.extractMultipleMarkerOffsets(project)
+    val elementsAtCaret = caretOffsets.map {
+        TargetElementUtil.getInstance().findTargetElement(
+                editor,
+                TargetElementUtil.REFERENCED_ELEMENT_ACCEPTED or TargetElementUtil.ELEMENT_NAME_ACCEPTED,
+                it
+        )!!
+    }
+
+    try {
+        action.runRefactoring(rootDir, mainPsiFile, elementsAtCaret, config)
+
+        assert(!conflictFile.exists())
+    }
+    catch(e: BaseRefactoringProcessor.ConflictsInTestsException) {
+        KotlinTestUtils.assertEqualsToFile(conflictFile, e.messages.distinct().sorted().joinToString("\n"))
+
+        BaseRefactoringProcessor.ConflictsInTestsException.setTestIgnore(true)
+
+        // Run refactoring again with ConflictsInTestsException suppressed
+        action.runRefactoring(rootDir, mainPsiFile, elementsAtCaret, config)
+    }
+    finally {
+        BaseRefactoringProcessor.ConflictsInTestsException.setTestIgnore(false)
+
+        EditorFactory.getInstance()!!.releaseEditor(editor)
+    }
+}

idea/tests/org/jetbrains/kotlin/idea/refactoring/copy/AbstractCopyTest.kt

@@ -0,0 +1,49 @@
+/*
+ * Copyright 2010-2017 JetBrains s.r.o.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.jetbrains.kotlin.idea.refactoring.copy
+
+import com.google.gson.JsonObject
+import com.intellij.openapi.project.Project
+import com.intellij.openapi.vfs.VirtualFile
+import com.intellij.psi.PsiElement
+import com.intellij.psi.PsiFile
+import com.intellij.refactoring.PackageWrapper
+import com.intellij.refactoring.copy.CopyHandler
+import com.intellij.refactoring.move.moveClassesOrPackages.MultipleRootsMoveDestination
+import org.jetbrains.kotlin.idea.jsonUtils.getNullableString
+import org.jetbrains.kotlin.idea.jsonUtils.getString
+import org.jetbrains.kotlin.idea.refactoring.AbstractMultifileRefactoringTest
+import org.jetbrains.kotlin.idea.refactoring.copy.CopyKotlinClassHandler.Companion.newName
+import org.jetbrains.kotlin.idea.refactoring.runRefactoringTest
+import org.jetbrains.kotlin.idea.util.application.runWriteAction
+import org.jetbrains.kotlin.utils.ifEmpty
+
+abstract class AbstractCopyTest : AbstractMultifileRefactoringTest(), AbstractMultifileRefactoringTest.RefactoringAction {
+    override fun runRefactoring(rootDir: VirtualFile, mainFile: PsiFile, elementsAtCaret: List<PsiElement>, config: JsonObject) {
+        val elementsToCopy = elementsAtCaret.ifEmpty { listOf(mainFile) }.toTypedArray()
+        assert(CopyHandler.canCopy(elementsToCopy))
+
+        val packageWrapper = PackageWrapper(mainFile.manager, config.getString("targetPackage"))
+        project.newName = config.getNullableString("newName")
+        val targetDirectory = runWriteAction { MultipleRootsMoveDestination(packageWrapper).getTargetDirectory(mainFile) }
+        CopyHandler.doCopy(elementsToCopy, targetDirectory)
+    }
+
+    override fun runRefactoring(path: String, config: JsonObject, rootDir: VirtualFile, project: Project) {
+        runRefactoringTest(path, config, rootDir, project, this)
+    }
+}

idea/tests/org/jetbrains/kotlin/idea/refactoring/copy/CopyTestGenerated.java

@@ -0,0 +1,86 @@
+/*
+ * Copyright 2010-2017 JetBrains s.r.o.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.jetbrains.kotlin.idea.refactoring.copy;
+
+import com.intellij.testFramework.TestDataPath;
+import org.jetbrains.kotlin.test.JUnit3RunnerWithInners;
+import org.jetbrains.kotlin.test.KotlinTestUtils;
+import org.jetbrains.kotlin.test.TargetBackend;
+import org.jetbrains.kotlin.test.TestMetadata;
+import org.junit.runner.RunWith;
+
+import java.io.File;
+import java.util.regex.Pattern;
+
+/** This class is generated by {@link org.jetbrains.kotlin.generators.tests.TestsPackage}. DO NOT MODIFY MANUALLY */
+@SuppressWarnings("all")
+@TestMetadata("idea/testData/refactoring/copy")
+@TestDataPath("$PROJECT_ROOT")
+@RunWith(JUnit3RunnerWithInners.class)
+public class CopyTestGenerated extends AbstractCopyTest {
+    public void testAllFilesPresentInCopy() throws Exception {
+        KotlinTestUtils.assertAllTestsPresentInSingleGeneratedClass(this.getClass(), new File("idea/testData/refactoring/copy"), Pattern.compile("^(.+)\\.test$"), TargetBackend.ANY);
+    }
+
+    @TestMetadata("copyClassCaretInside/copyClassCaretInside.test")
+    public void testCopyClassCaretInside_CopyClassCaretInside() throws Exception {
+        String fileName = KotlinTestUtils.navigationMetadata("idea/testData/refactoring/copy/copyClassCaretInside/copyClassCaretInside.test");
+        doTest(fileName);
+    }
+
+    @TestMetadata("copyClassToExistingFile/copyClassToExistingFile.test")
+    public void testCopyClassToExistingFile_CopyClassToExistingFile() throws Exception {
+        String fileName = KotlinTestUtils.navigationMetadata("idea/testData/refactoring/copy/copyClassToExistingFile/copyClassToExistingFile.test");
+        doTest(fileName);
+    }
+
+    @TestMetadata("copyClassToNewFile/copyClassToNewFile.test")
+    public void testCopyClassToNewFile_CopyClassToNewFile() throws Exception {
+        String fileName = KotlinTestUtils.navigationMetadata("idea/testData/refactoring/copy/copyClassToNewFile/copyClassToNewFile.test");
+        doTest(fileName);
+    }
+
+    @TestMetadata("copyClassWithCompanionRefs/copyClassWithCompanionRefs.test")
+    public void testCopyClassWithCompanionRefs_CopyClassWithCompanionRefs() throws Exception {
+        String fileName = KotlinTestUtils.navigationMetadata("idea/testData/refactoring/copy/copyClassWithCompanionRefs/copyClassWithCompanionRefs.test");
+        doTest(fileName);
+    }
+
+    @TestMetadata("copyClassWithRename/copyClassWithRename.test")
+    public void testCopyClassWithRename_CopyClassWithRename() throws Exception {
+        String fileName = KotlinTestUtils.navigationMetadata("idea/testData/refactoring/copy/copyClassWithRename/copyClassWithRename.test");
+        doTest(fileName);
+    }
+
+    @TestMetadata("copyNestedClass/copyNestedClass.test")
+    public void testCopyNestedClass_CopyNestedClass() throws Exception {
+        String fileName = KotlinTestUtils.navigationMetadata("idea/testData/refactoring/copy/copyNestedClass/copyNestedClass.test");
+        doTest(fileName);
+    }
+
+    @TestMetadata("copyObject/copyObject.test")
+    public void testCopyObject_CopyObject() throws Exception {
+        String fileName = KotlinTestUtils.navigationMetadata("idea/testData/refactoring/copy/copyObject/copyObject.test");
+        doTest(fileName);
+    }
+
+    @TestMetadata("copySingleClassFile/copySingleClassFile.test")
+    public void testCopySingleClassFile_CopySingleClassFile() throws Exception {
+        String fileName = KotlinTestUtils.navigationMetadata("idea/testData/refactoring/copy/copySingleClassFile/copySingleClassFile.test");
+        doTest(fileName);
+    }
+}

idea/tests/org/jetbrains/kotlin/idea/refactoring/move/AbstractMoveTest.kt

@@ -17,18 +17,11 @@
 package org.jetbrains.kotlin.idea.refactoring.move
 
 import com.google.gson.JsonObject
-import com.google.gson.JsonParser
-import com.intellij.codeInsight.TargetElementUtil
-import com.intellij.openapi.editor.EditorFactory
-import com.intellij.openapi.fileEditor.FileDocumentManager
 import com.intellij.openapi.project.Project
 import com.intellij.openapi.roots.ProjectRootManager
-import com.intellij.openapi.util.io.FileUtil
-import com.intellij.openapi.vfs.LocalFileSystem
 import com.intellij.openapi.vfs.VfsUtil
 import com.intellij.openapi.vfs.VirtualFile
 import com.intellij.psi.*
-import com.intellij.refactoring.BaseRefactoringProcessor.ConflictsInTestsException
 import com.intellij.refactoring.MoveDestination
 import com.intellij.refactoring.PackageWrapper
 import com.intellij.refactoring.move.MoveHandler
@@ -37,122 +30,33 @@ import com.intellij.refactoring.move.moveFilesOrDirectories.MoveFilesOrDirectori
 import com.intellij.refactoring.move.moveInner.MoveInnerProcessor
 import com.intellij.refactoring.move.moveMembers.MockMoveMembersOptions
 import com.intellij.refactoring.move.moveMembers.MoveMembersProcessor
-import com.intellij.testFramework.LightProjectDescriptor
-import com.intellij.testFramework.PlatformTestUtil
-import com.intellij.testFramework.UsefulTestCase
 import com.intellij.util.ActionRunner
 import org.jetbrains.kotlin.idea.jsonUtils.getNullableString
 import org.jetbrains.kotlin.idea.jsonUtils.getString
-import org.jetbrains.kotlin.idea.refactoring.createKotlinFile
+import org.jetbrains.kotlin.idea.refactoring.*
 import org.jetbrains.kotlin.idea.refactoring.move.changePackage.KotlinChangePackageRefactoring
 import org.jetbrains.kotlin.idea.refactoring.move.moveClassesOrPackages.KotlinAwareDelegatingMoveDestination
 import org.jetbrains.kotlin.idea.refactoring.move.moveDeclarations.*
-import org.jetbrains.kotlin.idea.refactoring.rename.loadTestConfiguration
-import org.jetbrains.kotlin.idea.refactoring.toPsiDirectory
-import org.jetbrains.kotlin.idea.refactoring.toPsiFile
 import org.jetbrains.kotlin.idea.search.allScope
 import org.jetbrains.kotlin.idea.search.projectScope
 import org.jetbrains.kotlin.idea.stubindex.KotlinFullClassNameIndex
-import org.jetbrains.kotlin.idea.test.*
 import org.jetbrains.kotlin.name.FqName
 import org.jetbrains.kotlin.psi.KtClassOrObject
 import org.jetbrains.kotlin.psi.KtFile
 import org.jetbrains.kotlin.psi.KtNamedDeclaration
 import org.jetbrains.kotlin.psi.psiUtil.getNonStrictParentOfType
-import org.jetbrains.kotlin.test.KotlinTestUtils
-import java.io.File
 
-abstract class AbstractMoveTest : KotlinLightCodeInsightFixtureTestCase() {
-    override fun getProjectDescriptor(): LightProjectDescriptor {
-        if (KotlinTestUtils.isAllFilesPresentTest(getTestName(false))) return super.getProjectDescriptor()
-
-        val testConfigurationFile = File(super.getTestDataPath(), fileName())
-        val config = loadTestConfiguration(testConfigurationFile)
-        val withRuntime = config["withRuntime"]?.asBoolean ?: false
-        if (withRuntime) {
-            return KotlinWithJdkAndRuntimeLightProjectDescriptor.INSTANCE
-        }
-        return KotlinLightProjectDescriptor.INSTANCE
-    }
-
-    protected fun doTest(path: String) {
-        val testFile = File(path)
-        val config = JsonParser().parse(FileUtil.loadFile(testFile, true)) as JsonObject
-
-        doTestCommittingDocuments(testFile) { rootDir ->
-            runMoveRefactoring(path, config, rootDir, project)
-        }
-    }
-
-    protected fun getTestDirName(lowercaseFirstLetter : Boolean) : String {
-        val testName = getTestName(lowercaseFirstLetter)
-        val endIndex = testName.lastIndexOf('_')
-        if (endIndex < 0) return testName
-        return testName.substring(0, endIndex).replace('_', '/')
-    }
-
-    override fun getTestDataPath() = super.getTestDataPath() + "/" + getTestDirName(true)
-
-    protected fun doTestCommittingDocuments(testFile: File, action: (VirtualFile) -> Unit) {
-        val beforeVFile = myFixture.copyDirectoryToProject("before", "")
-        PsiDocumentManager.getInstance(myFixture.project).commitAllDocuments()
-
-        val afterDir = File(testFile.parentFile, "after")
-        val afterVFile = LocalFileSystem.getInstance().findFileByIoFile(afterDir)?.apply {
-            UsefulTestCase.refreshRecursively(this)
-        }
-
-        action(beforeVFile)
-
-        PsiDocumentManager.getInstance(project).commitAllDocuments()
-        FileDocumentManager.getInstance().saveAllDocuments()
-        PlatformTestUtil.assertDirectoriesEqual(afterVFile, beforeVFile)
+abstract class AbstractMoveTest : AbstractMultifileRefactoringTest() {
+    override fun runRefactoring(path: String, config: JsonObject, rootDir: VirtualFile, project: Project) {
+        runMoveRefactoring(path, config, rootDir, project)
     }
 }
 
 fun runMoveRefactoring(path: String, config: JsonObject, rootDir: VirtualFile, project: Project) {
-    val action = MoveAction.valueOf(config.getString("type"))
-
-    val testDir = path.substring(0, path.lastIndexOf("/"))
-    val mainFilePath = config.getNullableString("mainFile") ?: config.getAsJsonArray("filesToMove").first().asString
-
-    val conflictFile = File(testDir + "/conflicts.txt")
-
-    val mainFile = rootDir.findFileByRelativePath(mainFilePath)!!
-    val mainPsiFile = PsiManager.getInstance(project).findFile(mainFile)!!
-    val document = FileDocumentManager.getInstance().getDocument(mainFile)!!
-    val editor = EditorFactory.getInstance()!!.createEditor(document, project)!!
-
-    val caretOffsets = document.extractMultipleMarkerOffsets(project)
-    val elementsAtCaret = caretOffsets.map {
-        TargetElementUtil.getInstance().findTargetElement(
-                editor,
-                TargetElementUtil.REFERENCED_ELEMENT_ACCEPTED or TargetElementUtil.ELEMENT_NAME_ACCEPTED,
-                it
-        )!!
-    }
-
-    try {
-        action.runRefactoring(rootDir, mainPsiFile, elementsAtCaret, config)
-
-        assert(!conflictFile.exists())
-    }
-    catch(e: ConflictsInTestsException) {
-        KotlinTestUtils.assertEqualsToFile(conflictFile, e.messages.distinct().sorted().joinToString("\n"))
-
-        ConflictsInTestsException.setTestIgnore(true)
-
-        // Run refactoring again with ConflictsInTestsException suppressed
-        action.runRefactoring(rootDir, mainPsiFile, elementsAtCaret, config)
-    }
-    finally {
-        ConflictsInTestsException.setTestIgnore(false)
-
-        EditorFactory.getInstance()!!.releaseEditor(editor)
-    }
+    runRefactoringTest(path, config, rootDir, project, MoveAction.valueOf(config.getString("type")))
 }
 
-enum class MoveAction {
+enum class MoveAction : AbstractMultifileRefactoringTest.RefactoringAction {
     MOVE_MEMBERS {
         override fun runRefactoring(rootDir: VirtualFile, mainFile: PsiFile, elementsAtCaret: List<PsiElement>, config: JsonObject) {
             val members = elementsAtCaret.map { it.getNonStrictParentOfType<PsiMember>()!! }
@@ -387,6 +291,4 @@ enum class MoveAction {
             MoveKotlinDeclarationsProcessor(descriptor).run()
         }
     };
-
-    abstract fun runRefactoring(rootDir: VirtualFile, mainFile: PsiFile, elementsAtCaret: List<PsiElement>, config: JsonObject)
 }