Issue 17024. Quick Fix to find imported library.

pkg/analysis_server/test/services/correction/strings_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.correction.strings;
 
 import 'package:analysis_server/src/services/correction/strings.dart';
+import 'package:unittest/unittest.dart' hide isEmpty;
+
 import '../../reflective_tests.dart';
-import 'package:unittest/unittest.dart' hide isEmpty;
 
 
 
 main() {
   groupSep = ' | ';
   runReflectiveTests(StringsTest);
 }
 
 
 @ReflectiveTestCase()
@@ skipping 115 matching lines @@
     expect(removeStart('abc', null), 'abc');
     expect(removeStart('abcTest', 'abc'), 'Test');
     expect(removeStart('my abcTest', 'abc'), 'my abcTest');
   }
 
   void test_repeat() {
     expect(repeat('x', 0), '');
     expect(repeat('x', 5), 'xxxxx');
     expect(repeat('abc', 3), 'abcabcabc');
   }
+
+  void test_substringAfterLast() {
+    expect(substringAfterLast('', '/'), '');
+    expect(substringAfterLast('abc', ''), '');
+    expect(substringAfterLast('abc', 'd'), 'abc');
+    expect(substringAfterLast('abcbde', 'b'), 'de');
+  }
 }