step 1 in making unittest platform independent.

lib/unittest/unittest_node.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.
-
-/**
- * A simple unit test entrypoint for running tests on node compiled with frog.
- */
-#library("unittest");
-
-#import('../../../frog/lib/node/node.dart');
-
-#source("shared.dart");
-
-_platformInitialize() {
-  // Do nothing.
-}
-
-_platformDefer(void callback()) {
-  setTimeout(callback, 0);
-}
-
-_platformStartTests() {
-  // Do nothing.
-}
-
-_platformCompleteTests(int testsPassed, int testsFailed, int testsErrors) {
-  // Print each test's result.
-  for (final test in _tests) {
-    print('${test.result.toUpperCase()}: ${test.description}');
-
-    if (test.message != '') {
-      print('  ${test.message}');
-    }
-  }
-
-  // Show the summary.
-  print('');
-
-  var success = false;
-  if (testsPassed == 0 && testsFailed == 0 && testsErrors == 0) {
-    print('No tests found.');
-    // This is considered a failure too: if this happens you probably have a
-    // bug in your unit tests.
-  } else if (testsFailed == 0 && testsErrors == 0) {
-    print('All $testsPassed tests passed.');
-    success = true;
-  } else {
-    print('$testsPassed PASSED, $testsFailed FAILED, $testsErrors ERRORS');
-  }
-
-  // A non-zero exit code is used by the test infrastructure to detect failure.
-  if (!success) process.exit(1);
-}