Getting started on options parsing.

tests/corelib/test_config.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("corelib_test_config");
 
 #import("../../tools/testing/dart/test_runner.dart");
+#import("../../tools/testing/dart/status_file_parser.dart");
 
 class CorelibTestSuite {
-  final String directoryPath = "tests/corelib/src";
+  String directoryPath = "tests/corelib/src";
   Function doTest;
   Function doDone;
   String shellPath;
   String pathSeparator;
 
   CorelibTestSuite() {
     shellPath = getDartShellFileName() ;
     pathSeparator = new Platform().pathSeparator();
   }
 
   void forEachTest(Function onTest, [Function onDone = null]) {
     doTest = onTest;
     doDone = onDone;
     processDirectory();
   }
 
   void processDirectory() {
+    directoryPath = getDirname(directoryPath);
     Directory dir = new Directory(directoryPath);
-    if (!dir.existsSync()) {
-      dir = new Directory(".." + pathSeparator + directoryPath);
-      Expect.isTrue(dir.existsSync(),
-                    "Cannot find tests/corelib/src or ../tests/corelib/src");
-      // TODO(ager): Use dir.errorHandler instead when it is implemented.
-    }
+    dir.errorHandler = (s) {
+      throw s;
+    };
     dir.fileHandler = processFile;
     dir.doneHandler = doDone;
     dir.list(false);
   }
 
   void processFile(String filename) {
     if (filename.endsWith("Test.dart")) {
       int start = filename.lastIndexOf(pathSeparator);
       String displayName = filename.substring(start + 1, filename.length - 5);
       // TODO(whesse): Gather test case info from status file and test file.
       doTest(new TestCase(displayName,
                           shellPath,
                           <String>["--enable_type_checks",
                                    "--ignore-unrecognized-flags",
                                    filename ],
                           completeHandler,
                           new Set.from([PASS, FAIL, CRASH, TIMEOUT])));
     }
   }
   
   void completeHandler(TestCase testCase) {
     TestOutput output = testCase.output;
     print("Exit code: ${output.exitCode} Time: ${output.time}");
   }
 }