Issue 21613. Fix for renaming FieldFormalParameterElement.

pkg/analysis_server/test/edit/refactoring_test.dart

Index: pkg/analysis_server/test/edit/refactoring_test.dart
diff --git a/pkg/analysis_server/test/edit/refactoring_test.dart b/pkg/analysis_server/test/edit/refactoring_test.dart
index 76350befedc40c6a66bf5343ad231ebb8330151e..cbfc511bbb3c923284cfe3443f31f54a8b3512ea 100644
--- a/pkg/analysis_server/test/edit/refactoring_test.dart
+++ b/pkg/analysis_server/test/edit/refactoring_test.dart
@@ -1071,6 +1071,7 @@ main() {
     addTestFile('''
 class A {
   var test = 0;
+  A(this.test);
   main() {
     print(test);
   }
@@ -1081,6 +1082,7 @@ class A {
     }, '''
 class A {
   var newName = 0;
+  A(this.newName);
   main() {
     print(newName);
   }
@@ -1088,6 +1090,52 @@ class A {
 ''');
   }
 
+  test_classMember_field_onFieldFormalParameter() {
+    addTestFile('''
+class A {
+  var test = 0;
+  A(this.test);
+  main() {
+    print(test);
+  }
+}
+''');
+    return assertSuccessfulRefactoring(() {
+      return sendRenameRequest('test);', 'newName');
+    }, '''
+class A {
+  var newName = 0;
+  A(this.newName);
+  main() {
+    print(newName);
+  }
+}
+''');
+  }
+
+  test_classMember_field_onFieldFormalParameter_named() {
+    addTestFile('''
+class A {
+  final int test;
+  A({this.test: 0});
+}
+main() {
+  new A(test: 42);
+}
+''');
+    return assertSuccessfulRefactoring(() {
+      return sendRenameRequest('test: 42', 'newName');
+    }, '''
+class A {
+  final int newName;
+  A({this.newName: 0});
+}
+main() {
+  new A(newName: 42);
+}
+''');
+  }
+
   test_classMember_getter() {
     addTestFile('''
 class A {