Dartest CL - Please review

client/testing/unittest/unittest_dartest.dart

Index: client/testing/unittest/unittest_dartest.dart
===================================================================
--- client/testing/unittest/unittest_dartest.dart	(revision 0)
+++ client/testing/unittest/unittest_dartest.dart	(revision 0)
@@ -0,0 +1,91 @@
+// 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 simple unit test library for running tests inside the DARTest In-App test
+ * runner along side the application under test in a browser.
+ */
+#library("unittest");
+
+#import("dart:dom");
+
+#source("shared.dart");
+
+/** Getter so that the DARTest UI can access tests. */
+List<TestCase> get tests() => _tests;
+
+int testsRun = 0;
+int testsFailed = 0;
+int testsErrors = 0;
+
+bool previousAsyncTest = false;
+
+Function updateUI = null;
+
+Function dartestLogger = null;
+
+_platformDefer(void callback()) {
+  _testRunner = runDartests;
+  // DARTest ignores the callback. Tests are launched from UI.
+}
+
+// Update test results
+updateTestStats(TestCase test) {
+  assert(test.result != null);
+  if(test.startTime != null) {
+    test.runningTime = (new Date.now()).difference(test.startTime);
+  }
+  testsRun++;
+  switch (test.result) {
+    case 'fail': testsFailed++; break;
+    case 'error': testsErrors++; break;   
+  } 
+  updateUI(test);
+}
+
+// Run tests sequentially
+runDartests() {
+  if(previousAsyncTest) {
+    updateTestStats(_tests[_currentTest - 1]);
+    previousAsyncTest = false;
+  }
+  if(_currentTest < _tests.length) {
+    final testCase = _tests[_currentTest];
+    dartestLogger('Running test:' + testCase.description);
+    testCase.startTime = new Date.now();
+    _runTest(testCase);
+    if (!testCase.isComplete && testCase.callbacks > 0) {
+      previousAsyncTest = true;
+      return;
+    }
+    updateTestStats(testCase);
+    _currentTest++;
+    window.setTimeout(runDartests, 0);
+  }
+}
+
+_platformStartTests() {
+  // TODO(shauvik): Support for VM and command line coming soon!
+  window.console.log("Warning: Running DARTest from VM or Command-line.");
+}
+
+_platformInitialize() {
+  // Do nothing
+}
+
+_platformCompleteTests(int testsPassed, int testsFailed, int testsErrors) {
+  // Do nothing
+}
+
+String getTestResultsCsv() {
+  StringBuffer out = new StringBuffer();
+  _tests.forEach((final test) {
+    String result = 'none';
+    if(test.result != null) {
+      result = test.result.toUpperCase();
+    }
+    out.add('${test.id}, "${test.description}", $result\n');
+  });
+  return out.toString();
+}