Move: KT-8955

Fix NPE on moving directory where at least one Kotlin file
contains package directive unmatched by the containing directory

 #KT-8955 Fixed

idea/src/org/jetbrains/kotlin/idea/refactoring/move/moveFilesOrDirectories/KotlinMoveDirectoryWithClassesHelper.kt

@@ -90,7 +90,11 @@ class KotlinMoveDirectoryWithClassesHelper : MoveDirectoryWithClassesHelper() {
         moveContextMap[file] = MoveContext(moveDestination,
                                            fileHandler.findInternalUsages(file, moveDestination),
                                            moveDeclarationsProcessor)
-        moveDestination.getPackage()?.let { newPackage -> file.packageDirective?.fqName = FqName(newPackage.qualifiedName).quoteIfNeeded() }
+        if (moveDeclarationsProcessor != null) {
+            moveDestination.getPackage()?.let { newPackage ->
+                file.packageDirective?.fqName = FqName(newPackage.qualifiedName).quoteIfNeeded()
+            }
+        }
         return true
     }
 
@@ -109,10 +113,12 @@ class KotlinMoveDirectoryWithClassesHelper : MoveDirectoryWithClassesHelper() {
                     val moveContext = fileToMoveContext[file] ?: return@body
 
                     MoveFilesOrDirectoriesUtil.doMoveFile(file, moveContext.newParent)
+
+                    val moveDeclarationsProcessor = moveContext.moveDeclarationsProcessor ?: return@body
                     val movedFile = moveContext.newParent.findFile(file.name) ?: return@body
 
                     usagesToProcessAfterMove +=
-                            FileUsagesWrapper(movedFile, it.usages + moveContext.internalUsages, moveContext.moveDeclarationsProcessor)
+                            FileUsagesWrapper(movedFile, it.usages + moveContext.internalUsages, moveDeclarationsProcessor)
                 }
             usagesToProcessAfterMove.forEach { fileHandler.retargetUsages(it.usages, it.moveDeclarationsProcessor!!) }
         }

idea/testData/refactoring/move/kotlin/moveDirectory/moveDirectoryKeepPackageDirective/after/A/A.iml

@@ -0,0 +1,12 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<module type="JAVA_MODULE" version="4">
+  <component name="NewModuleRootManager" inherit-compiler-output="true">
+    <exclude-output />
+    <content url="file://$MODULE_DIR$">
+      <sourceFolder url="file://$MODULE_DIR$/src" isTestSource="false" />
+    </content>
+    <orderEntry type="inheritedJdk" />
+    <orderEntry type="sourceFolder" forTests="false" />
+    <orderEntry type="library" name="KotlinJavaRuntime" level="project" />
+  </component>
+</module>

idea/testData/refactoring/move/kotlin/moveDirectory/moveDirectoryKeepPackageDirective/after/A/src/z/x/test.kt

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

idea/testData/refactoring/move/kotlin/moveDirectory/moveDirectoryKeepPackageDirective/before/A/A.iml

@@ -0,0 +1,12 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<module type="JAVA_MODULE" version="4">
+  <component name="NewModuleRootManager" inherit-compiler-output="true">
+    <exclude-output />
+    <content url="file://$MODULE_DIR$">
+      <sourceFolder url="file://$MODULE_DIR$/src" isTestSource="false" />
+    </content>
+    <orderEntry type="inheritedJdk" />
+    <orderEntry type="sourceFolder" forTests="false" />
+    <orderEntry type="library" name="KotlinJavaRuntime" level="project" />
+  </component>
+</module>

idea/testData/refactoring/move/kotlin/moveDirectory/moveDirectoryKeepPackageDirective/before/A/src/x/test.kt

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

idea/testData/refactoring/move/kotlin/moveDirectory/moveDirectoryKeepPackageDirective/moveDirectoryKeepPackageDirective.test

@@ -0,0 +1,7 @@
+{
+  "mainFile": "A/src/x/test.kt",
+  "type": "MOVE_DIRECTORY_WITH_CLASSES",
+  "sourceDir": "A/src/x",
+  "targetDir": "A/src/z",
+  "isMultiModule": "true"
+}

idea/tests/org/jetbrains/kotlin/idea/refactoring/move/MoveTestGenerated.java

@@ -228,9 +228,15 @@ public class MoveTestGenerated extends AbstractMoveTest {
         doTest(fileName);
     }
 
-    @TestMetadata("kotlin/moveDirectory/moveDirectory.test")
-    public void testKotlin_moveDirectory_MoveDirectory() throws Exception {
-        String fileName = KotlinTestUtils.navigationMetadata("idea/testData/refactoring/move/kotlin/moveDirectory/moveDirectory.test");
+    @TestMetadata("kotlin/moveDirectory/moveDirectoryKeepPackageDirective/moveDirectoryKeepPackageDirective.test")
+    public void testKotlin_moveDirectory_moveDirectoryKeepPackageDirective_MoveDirectoryKeepPackageDirective() throws Exception {
+        String fileName = KotlinTestUtils.navigationMetadata("idea/testData/refactoring/move/kotlin/moveDirectory/moveDirectoryKeepPackageDirective/moveDirectoryKeepPackageDirective.test");
+        doTest(fileName);
+    }
+
+    @TestMetadata("kotlin/moveDirectory/moveDirectoryWithPackageDirectiveChange/moveDirectoryWithPackageDirectiveChange.test")
+    public void testKotlin_moveDirectory_moveDirectoryWithPackageDirectiveChange_MoveDirectoryWithPackageDirectiveChange() throws Exception {
+        String fileName = KotlinTestUtils.navigationMetadata("idea/testData/refactoring/move/kotlin/moveDirectory/moveDirectoryWithPackageDirectiveChange/moveDirectoryWithPackageDirectiveChange.test");
         doTest(fileName);
     }