Issue 27179. Materialize synthetic constructors on rename.

pkg/analysis_server/test/services/refactoring/rename_constructor_test.dart

Index: pkg/analysis_server/test/services/refactoring/rename_constructor_test.dart
diff --git a/pkg/analysis_server/test/services/refactoring/rename_constructor_test.dart b/pkg/analysis_server/test/services/refactoring/rename_constructor_test.dart
index bb4318b31a0e013a4ede00c117fb4bd1c4bdb2a2..f10a11dd518eba5fcd66746bc21fe9fcdafe873e 100644
--- a/pkg/analysis_server/test/services/refactoring/rename_constructor_test.dart
+++ b/pkg/analysis_server/test/services/refactoring/rename_constructor_test.dart
@@ -132,6 +132,39 @@ main() {
 ''');
   }
 
+  test_createChange_add_toSynthetic() {
+    indexTestUnit('''
+class A {
+}
+class B extends A {
+  B() : super() {}
+  factory B._() = A;
+}
+main() {
+  new A();
+}
+''');
+    // configure refactoring
+    _createConstructorInvocationRefactoring('new A();');
+    expect(refactoring.refactoringName, 'Rename Constructor');
+    expect(refactoring.elementKindName, 'constructor');
+    expect(refactoring.oldName, '');
+    // validate change
+    refactoring.newName = 'newName';
+    return assertSuccessfulRefactoring('''
+class A {
+  A.newName();
+}
+class B extends A {
+  B() : super.newName() {}
+  factory B._() = A.newName;
+}
+main() {
+  new A.newName();
+}
+''');
+  }
+
   test_createChange_change() {
     indexTestUnit('''
 class A {
@@ -210,4 +243,10 @@ main() {
         search, (node) => node is ConstructorDeclaration);
     createRenameRefactoringForElement(element);
   }
+
+  void _createConstructorInvocationRefactoring(String search) {
+    ConstructorElement element = findNodeElementAtString(
+        search, (node) => node is InstanceCreationExpression);
+    createRenameRefactoringForElement(element);
+  }
 }