Update unittest to new package layout.

pkg/unittest/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.
-
-/** This file is sourced by unitest.dart. */
-
-/**
- * Hooks to configure the unittest library for different platforms. This class
- * implements the API in a platform-independent way. Tests that want to take
- * advantage of the platform can create a subclass and override methods from
- * this class.
- */
-class Configuration {
-  TestCase currentTestCase = null;
-
-  /**
-   * Subclasses can override this with something useful for diagnostics.
-   * Particularly useful in cases where we have parent/child configurations
-   * such as layout tests.
-   */
-  get name => 'Configuration';
-  /**
-   * If true, then tests are started automatically (otherwise [runTests]
-   * must be called explicitly after the tests are set up.
-   */
-  get autoStart => true;
-
-  /**
-   * Called as soon as the unittest framework becomes initialized. This is done
-   * even before tests are added to the test framework. It might be used to
-   * determine/debug errors that occur before the test harness starts executing.
-   */
-  void onInit() {}
-
-  /**
-   * Called as soon as the unittest framework starts running. Used commonly to
-   * tell the vm or browser that tests are still running and the process should
-   * wait until they are done.
-   */
-  void onStart() {
-    _postMessage('unittest-suite-wait-for-done');
-  }
-
-  /**
-   * Called when each test starts. Useful to show intermediate progress on
-   * a test suite.
-   */
-  void onTestStart(TestCase testCase) {
-    currentTestCase = testCase;
-  }
-
-  /**
-   * Called when each test is completed. Useful to show intermediate progress on
-   * a test suite.
-   */
-  void onTestResult(TestCase testCase) {
-    currentTestCase = null;
-  }
-
-  /**
-   * Can be called by tests to log status. Tests should use this
-   * instead of print. Subclasses should not override this; they
-   * should instead override logMessage which is passed the test case.
-   */
-  void logMessage(String message) {
-    if (currentTestCase == null || _currentTest >= _tests.length ||
-        currentTestCase.id != _tests[_currentTest].id) {
-      // Before or after tests run, or with a mismatch between what the
-      // config and the test harness think is the current test. In this
-      // case we pass null for the test case reference and let the config
-      // decide what to do with this.
-      logTestCaseMessage(null, message);
-    } else {
-      logTestCaseMessage(currentTestCase, message);
-    }
-  }
-
-  /**
-   * Handles the logging of messages by a test case. The default in
-   * this base configuration is to call print();
-   */
-  void logTestCaseMessage(TestCase testCase, String message) {
-    print(message);
-  }
-
-  /**
-   * Called with the result of all test cases. The default implementation prints
-   * the result summary using the built-in [print] command. Browser tests
-   * commonly override this to reformat the output.
-   *
-   * When [uncaughtError] is not null, it contains an error that occured outside
-   * of tests (e.g. setting up the test).
-   */
-  void onDone(int passed, int failed, int errors, List<TestCase> results,
-      String uncaughtError) {
-    // Print each test's result.
-    for (final t in _tests) {
-      print('${t.result.toUpperCase()}: ${t.description}');
-
-      if (t.message != '') {
-        print(_indent(t.message));
-      }
-
-      if (t.stackTrace != null && t.stackTrace != '') {
-        print(_indent(t.stackTrace));
-      }
-    }
-
-    // Show the summary.
-    print('');
-
-    var success = false;
-    if (passed == 0 && failed == 0 && errors == 0) {
-      print('No tests found.');
-      // This is considered a failure too.
-    } else if (failed == 0 && errors == 0 && uncaughtError == null) {
-      print('All $passed tests passed.');
-      success = true;
-    } else {
-      if (uncaughtError != null) {
-        print('Top-level uncaught error: $uncaughtError');
-      }
-      print('$passed PASSED, $failed FAILED, $errors ERRORS');
-    }
-
-    if (success) {
-      _postMessage('unittest-suite-success');
-    } else {
-      throw new Exception('Some tests failed.');
-    }
-  }
-
-  String _indent(String str) {
-    // TODO(nweiz): Use this simpler code once issue 2980 is fixed.
-    // return str.replaceAll(const RegExp("^", multiLine: true), "  ");
-
-    return Strings.join(str.split("\n").map((line) => "  $line"), "\n");
-  }
-
-  /** Handle errors that happen outside the tests. */
-  // TODO(vsm): figure out how to expose the stack trace here
-  // Currently e.message works in dartium, but not in dartc.
-  handleExternalError(e, String message) =>
-      _reportTestError('$message\nCaught $e', '');
-
-  _postMessage(String message) {
-    // In dart2js browser tests, the JavaScript-based test controller
-    // intercepts calls to print and listens for "secret" messages.
-    print(message);
-  }
-}