Allow runtime tests to run on Windows.

tools/testing/dart/test_suite.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.
 
 #library("test_suite");
 
 #import("status_file_parser.dart");
 #import("test_runner.dart");
 #import("multitest.dart");
 
@@ skipping 209 matching lines @@
     dir.list(recursive: listRecursively());
   }
 
   void enqueueTestCaseFromTestInformation(TestInformation info) {
     var filename = info.filename;
     var optionsFromFile = info.optionsFromFile;
     var isNegative = info.isNegative;
 
     // Look up expectations in status files using a modified file path.
     String testName;
-    int start = filename.lastIndexOf('src' + pathSeparator);
+    filename = filename.replaceAll('\\', '/');
+    int start = filename.lastIndexOf('src/');
     if (start != -1) {
       testName = filename.substring(start + 4, filename.length - 5);
     } else if (optionsFromFile['isMultitest']) {
-      start = filename.lastIndexOf(pathSeparator);
+      start = filename.lastIndexOf('/');
       int middle = filename.lastIndexOf('_');
-      testName = filename.substring(start + 1, middle) + pathSeparator +
+      testName = filename.substring(start + 1, middle) + '/' +
           filename.substring(middle + 1, filename.length - 5);
     } else {
       // This case is hit by the dartc client compilation
       // tests. These tests are pretty broken compared to the
       // rest. They use the .dart suffix in the status files. They
       // find tests in weird ways (testing that they contain "#").
       // They need to be redone.
       // directoryPath may start with '../'.
+      // TODO(1058): This does not work on Windows.
       String sanitizedDirectoryPath = (directoryPath.startsWith('../')) ?
           directoryPath.substring(3) : directoryPath;
       start = filename.indexOf(sanitizedDirectoryPath);
       testName = filename.substring(start + sanitizedDirectoryPath.length + 1,
                                     filename.length);
       if (configuration['component'] != 'dartc') {
         if (testName.endsWith('.dart')) {
           testName = testName.substring(0, testName.length - 5);
         }
       }
@@ skipping 721 matching lines @@
  * $noCrash tests are expected to be flaky but not crash
  * $pass tests are expected to pass
  * $failOk tests are expected to fail that we won't fix
  * $fail tests are expected to fail that we should fix
  * $crash tests are expected to crash that we should fix
  * $timeout tests are allowed to timeout\
 """;
     print(report);
   }
 }