Fixed bug in import insertion: it did not work with descriptors taken before modifications

idea/src/org/jetbrains/kotlin/idea/util/ImportInsertHelperImpl.kt

@@ -183,12 +183,14 @@ public class ImportInsertHelperImpl(private val project: Project) : ImportInsert
             val name = target.getName()
             val topLevelScope = resolutionFacade.getFileTopLevelScope(file)
 
+            val targetFqName = target.importableFqName ?: return ImportDescriptorResult.FAIL
+
             // check if import is not needed
             when (target) {
-                is ClassDescriptor -> { if (topLevelScope.getClassifier(name) == target) return ImportDescriptorResult.ALREADY_IMPORTED }
-                is PackageViewDescriptor -> { if (topLevelScope.getPackage(name) == target) return ImportDescriptorResult.ALREADY_IMPORTED }
-                is FunctionDescriptor -> { if (topLevelScope.getFunctions(name).contains(target)) return ImportDescriptorResult.ALREADY_IMPORTED }
-                is PropertyDescriptor -> { if (topLevelScope.getProperties(name).contains(target)) return ImportDescriptorResult.ALREADY_IMPORTED }
+                is ClassDescriptor -> { if (topLevelScope.getClassifier(name)?.importableFqName == targetFqName) return ImportDescriptorResult.ALREADY_IMPORTED }
+                is PackageViewDescriptor -> { if (topLevelScope.getPackage(name)?.importableFqName == targetFqName) return ImportDescriptorResult.ALREADY_IMPORTED }
+                is FunctionDescriptor -> { if (topLevelScope.getFunctions(name).map { it.importableFqName }.contains(targetFqName)) return ImportDescriptorResult.ALREADY_IMPORTED }
+                is PropertyDescriptor -> { if (topLevelScope.getProperties(name).map { it.importableFqName }.contains(targetFqName)) return ImportDescriptorResult.ALREADY_IMPORTED }
                 else -> return ImportDescriptorResult.FAIL
             }
 

idea/testData/shortenRefs/descriptorsChangeAfterImportInsertion.dependency.kt

@@ -0,0 +1,4 @@
+package bar
+
+class Class1
+class Class2

idea/testData/shortenRefs/descriptorsChangeAfterImportInsertion.kt

@@ -0,0 +1,4 @@
+// ALL_UNDER_IMPORTS: true
+package foo
+
+<selection>fun foo(p: bar.Class1): bar.Class2 { }</selection>

idea/testData/shortenRefs/descriptorsChangeAfterImportInsertion.kt.after

@@ -0,0 +1,6 @@
+// ALL_UNDER_IMPORTS: true
+package foo
+
+import bar.*
+
+fun foo(p: Class1): Class2 { }

idea/tests/org/jetbrains/kotlin/shortenRefs/ShortenRefsTestGenerated.java

@@ -49,6 +49,12 @@ public class ShortenRefsTestGenerated extends AbstractShortenRefsTest {
         doTest(fileName);
     }
 
+    @TestMetadata("descriptorsChangeAfterImportInsertion.kt")
+    public void testDescriptorsChangeAfterImportInsertion() throws Exception {
+        String fileName = JetTestUtils.navigationMetadata("idea/testData/shortenRefs/descriptorsChangeAfterImportInsertion.kt");
+        doTest(fileName);
+    }
+
     @TestMetadata("JavaStaticMethod.kt")
     public void testJavaStaticMethod() throws Exception {
         String fileName = JetTestUtils.navigationMetadata("idea/testData/shortenRefs/JavaStaticMethod.kt");