Make multi tests work with DartC.

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 169 matching lines @@
 
     // Only run the tests that match the pattern.
     RegExp pattern = configuration['selectors'][suiteName];
     if (!pattern.hasMatch(filename)) return;
 
     var timeout = configuration['timeout'];
     var optionsFromFile = optionsFromFile(filename);
 
     Function createTestCase(String filename,
                             bool isNegative,
-                            [bool isNegativeIfChecked = false]) {
+                            [bool isNegativeIfChecked = false,
+                             bool enableFatalTypeErrors = false]) {
       // Look up expectations in status files using a modified file path.
       String pathSeparator = new Platform().pathSeparator();
       String testName;
       int start = filename.lastIndexOf('src' + pathSeparator);
       if (start != -1) {
         testName = filename.substring(start + 4, filename.length - 5);
       } else {
         // Only multitests in a temporary directory should reach here.
         start = filename.lastIndexOf(pathSeparator);
         int middle = filename.lastIndexOf('_');
         testName = filename.substring(start + 1, middle) + pathSeparator +
             filename.substring(middle + 1, filename.length - 5);
       }
       Set<String> expectations = testExpectations.expectations(testName);
 
       if (expectations.contains(SKIP)) return;
 
       isNegative = isNegative ||
           (configuration['checked'] && isNegativeIfChecked);
-      var argumentLists = argumentListsFromFile(filename, optionsFromFile);
+      var argumentLists = argumentListsFromFile(filename,
+                                                optionsFromFile,
+                                                enableFatalTypeErrors);
       for (var args in argumentLists) {
         doTest(new TestCase(testName,
                             shellPath,
                             args,
                             timeout,
                             completeHandler,
                             expectations,
                             isNegative));
       }
     }
 
-
     if (optionsFromFile['isMultitest']) {
+      bool supportsFatalTypeErrors = (configuration['component'] == 'dartc');
       ++activeMultitests;
       DoMultitest(filename,
                   TestUtils.buildDir(configuration),
                   directoryPath,
+                  supportsFatalTypeErrors,
                   createTestCase,
                   multitestDone);
     } else {
       createTestCase(filename, optionsFromFile['isNegative']);
     }
   }
 
   void multitestDone() {
     --activeMultitests;
     if (activeMultitests == 0 && listingDone) {
       doDone();
     }
   }
 
   void directoryListingDone(ignore) {
     listingDone = true;
     if (activeMultitests == 0) {
       doDone();
     }
   }
 
   void completeHandler(TestCase testCase) {
   }
 
   List<List<String>> argumentListsFromFile(String filename,
-                                           Map optionsFromFile) {
+                                           Map optionsFromFile,
+                                           bool enableFatalTypeErrors) {
     List args = TestUtils.standardOptions(configuration);
     args.addAll(additionalOptions());
+    if (enableFatalTypeErrors) args.add('--fatal-type-errors');
 
     bool isMultitest = optionsFromFile["isMultitest"];
     List<String> dartOptions = optionsFromFile["dartOptions"];
     List<List<String>> vmOptionsList = optionsFromFile["vmOptions"];
     Expect.isTrue(!isMultitest || dartOptions == null);
     if (dartOptions == null) {
       args.add(filename);
     } else {
       var filename = dartOptions[0];
       // TODO(ager): Get rid of this hack when the runtime checkout goes away.
@@ skipping 127 matching lines @@
       args.add("--enable_leg");
     }
     if (configuration["component"] == "dartc") {
       if (configuration["mode"] == "release") {
         args.add("--optimize");
       }
     }
     return args;
   }
 }