Fix test_suite.dart

tools/testing/dart/test_suite.dart

 // Copyright (c) 2012, 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.
 
 /**
  * Classes and methods for enumerating and preparing tests.
  *
  * This library includes:
  *
  * - Creating tests by listing all the Dart files in certain directories,
@@ skipping 1437 matching lines @@
         info,
         isNegative(info),
         fullHtmlPath);
     enqueueNewTestCase(testCase);
     return;
   }
 
   /** Helper to create a compilation command for a single input file. */
   Command _compileCommand(String inputFile, String outputFile,
       String compiler, String dir, optionsFromFile) {
-    assert (compiler == 'dart2js')
+    assert(compiler == 'dart2js');
     List<String> args;
     if (compilerPath.endsWith('.dart')) {
       // Run the compiler script via the Dart VM.
       args = [compilerPath];
     } else {
       args = [];
     }
     args.addAll(TestUtils.standardOptions(configuration));
     String packageRoot =
       packageRootArgument(optionsFromFile['packageRoot']);
@@ skipping 923 matching lines @@
       for (var key in PATH_REPLACEMENTS.keys) {
         if (path.startsWith(key)) {
           path = path.replaceFirst(key, PATH_REPLACEMENTS[key]);
           break;
         }
       }
     }
     return path;
   }
 }