copy reference: fix isReferenceTo check (IDEA-152601)

java/java-impl/src/com/intellij/ide/actions/JavaQualifiedNameProvider.java

@@ -281,8 +281,11 @@ public class JavaQualifiedNameProvider implements QualifiedNameProvider {
     PsiElement resolved = referenceExpression.advancedResolve(true).getElement();
     if (!(resolved instanceof PsiMember)) return false;
     PsiClass aClass = ((PsiMember)resolved).getContainingClass();
-    if (aClass instanceof PsiAnonymousClass) aClass = ((PsiAnonymousClass)aClass).getBaseClassType().resolve();
-    return aClass == targetElement.getContainingClass();
+    if (aClass instanceof PsiAnonymousClass) {
+      aClass = ((PsiAnonymousClass)aClass).getBaseClassType().resolve();
+      return aClass == targetElement.getContainingClass();
+    }
+    return resolved == targetElement;
   }
 
   @Nullable

java/java-tests/testData/codeInsight/copyReference/Constructor.java

@@ -1,3 +1,8 @@
+class XXX {
+    void f() {
+        new
+    }
+}
 class C2 {
     public <caret>C2(int i) {
     }

java/java-tests/testSrc/com/intellij/codeInsight/CopyReferenceActionTest.groovy

@@ -38,6 +38,15 @@ public class CopyReferenceActionTest extends LightCodeInsightFixtureTestCase {
   public void testIdentifierSeparator() throws Exception { doTest(); }
   public void testMethodFromAnonymousClass() throws Exception { doTest(); }
 
+  public void testSameClassNames() throws Exception {
+    myFixture.addClass("package p; public class Foo {}")
+    myFixture.configureByText("Foo.java", "package p1; public class Fo<caret>o {}")
+    performCopy()
+    myFixture.configureByText("a.java", "import p.Foo; class Bar { <caret>}")
+    performPaste()
+    myFixture.checkResult """import p.Foo; class Bar {p1.Foo}"""
+  }
+
   public void testAddImport() {
     myFixture.addClass("package foo; public class Foo {}")
     myFixture.configureByText "a.java", "import foo.F<caret>oo;"