- Change "static final" to "static const" in the

pkg/unittest/unittest.dart

 // Copyright (c) 2011, 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.
 
 /**
  * A library for writing dart unit tests.
  *
  * To import this library, specify the relative path to
  * pkg/unittest/unittest.dart.
  *
@@ skipping 182 matching lines @@
 Function _testTeardown;
 
 /** Current test being executed. */
 int _currentTest = 0;
 
 /** Whether the framework is in an initialized state. */
 bool _initialized = false;
 
 String _uncaughtErrorMessage = null;
 
-final _PASS  = 'pass';
-final _FAIL  = 'fail';
-final _ERROR = 'error';
+const _PASS  = 'pass';
+const _FAIL  = 'fail';
+const _ERROR = 'error';
 
 /** If set, then all other test cases will be ignored. */
 TestCase _soloTest;
 
 /**
  * (Deprecated) Evaluates the [function] and validates that it throws an
  * exception. If [callback] is provided, then it will be invoked with the
  * thrown exception. The callback may do any validation it wants. In addition,
  * if it returns `false`, that also indicates an expectation failure.
  */
@@ skipping 79 matching lines @@
   _tests.add(_soloTest);
 }
 
 /** Sentinel value for [_SpreadArgsHelper]. */
 class _Sentinel {
   const _Sentinel();
 }
 
 // TODO(sigmund): make a singleton const field when frog supports passing those
 // as default values to named arguments.
-final _sentinel = const _Sentinel();
+const _sentinel = const _Sentinel();
 
 /** Simulates spread arguments using named arguments. */
 // TODO(sigmund): remove this class and simply use a closure with named
 // arguments (if still applicable).
 class _SpreadArgsHelper {
   Function _callback;
   int _expectedCalls;
   int _actualCalls = 0;
   int _testNum;
   TestCase _testCase;
@@ skipping 536 matching lines @@
 }
 
 /** Enable a test by ID. */
 void enableTest(int testId) => _setTestEnabledState(testId, true);
 
 /** Disable a test by ID. */
 void disableTest(int testId) => _setTestEnabledState(testId, false);
 
 /** Signature for a test function. */
 typedef void TestFunction();