Issue 24420. Don't allow renaming in pub packages.

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

 // Copyright (c) 2014, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 library test.services.refactoring.rename_unit_member;
 
 import 'package:analysis_server/src/protocol.dart';
 import 'package:analysis_server/src/services/correction/status.dart';
 import 'package:test_reflective_loader/test_reflective_loader.dart';
 import 'package:unittest/unittest.dart';
@@ skipping 206 matching lines @@
   }
 }
 ''');
     createRenameRefactoringAtString('Test {}');
     // check status
     refactoring.newName = 'NewName';
     RefactoringStatus status = await refactoring.checkFinalConditions();
     assertRefactoringStatusOK(status);
   }
 
+  test_checkInitialConditions_inPubCache_posix() async {
+    addSource(
+        '/.pub-cache/lib.dart',
+        r'''
+class A {}
+''');
+    indexTestUnit('''
+import '/.pub-cache/lib.dart';
+main() {
+  A a;
+}
+''');
+    createRenameRefactoringAtString('A a');
+    // check status
+    refactoring.newName = 'NewName';
+    RefactoringStatus status = await refactoring.checkInitialConditions();
+    assertRefactoringStatus(status, RefactoringProblemSeverity.FATAL,
+        expectedMessage:
+            "The class 'A' is defined in a pub package, so cannot be renamed.");
+  }
+
+  test_checkInitialConditions_inPubCache_windows() async {
+    addSource(
+        '/Pub/Cache/lib.dart',
+        r'''
+class A {}
+''');
+    indexTestUnit('''
+import '/Pub/Cache/lib.dart';
+main() {
+  A a;
+}
+''');
+    createRenameRefactoringAtString('A a');
+    // check status
+    refactoring.newName = 'NewName';
+    RefactoringStatus status = await refactoring.checkInitialConditions();
+    assertRefactoringStatus(status, RefactoringProblemSeverity.FATAL,
+        expectedMessage:
+            "The class 'A' is defined in a pub package, so cannot be renamed.");
+  }
+
   test_checkInitialConditions_inSDK() async {
     indexTestUnit('''
 main() {
   String s;
 }
 ''');
     createRenameRefactoringAtString('String s');
     // check status
     refactoring.newName = 'NewName';
     RefactoringStatus status = await refactoring.checkInitialConditions();
@@ skipping 274 matching lines @@
     return assertSuccessfulRefactoring('''
 int newName = 0;
 main() {
   print(newName);
   newName = 1;
   newName += 2;
 }
 ''');
   }
 }