Re-apply "Remove unittest and matcher from the repo."

pkg/unittest/lib/html_config.dart

-// Copyright (c) 2013, 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 in a browser.
-library unittest.html_config;
-
-import 'dart:async';
-import 'dart:convert';
-import 'dart:html';
-import 'dart:js' as js;
-import 'unittest.dart';
-
-/// Creates a table showing tests results in HTML.
-void _showResultsInPage(int passed, int failed, int errors,
-    List<TestCase> results, bool isLayoutTest, String uncaughtError) {
-  if (isLayoutTest && (passed == results.length) && uncaughtError == null) {
-    document.body.innerHtml = "PASS";
-  } else {
-    var newBody = new StringBuffer();
-    newBody.write("<table class='unittest-table'><tbody>");
-    newBody.write(passed == results.length && uncaughtError == null
-        ? "<tr><td colspan='3' class='unittest-pass'>PASS</td></tr>"
-        : "<tr><td colspan='3' class='unittest-fail'>FAIL</td></tr>");
-
-    for (final test_ in results) {
-      newBody.write(_toHtml(test_));
-    }
-
-    if (uncaughtError != null) {
-      newBody.write('''<tr>
-          <td>--</td>
-          <td class="unittest-error">ERROR</td>
-          <td>Uncaught error: $uncaughtError</td>
-        </tr>''');
-    }
-
-    if (passed == results.length && uncaughtError == null) {
-      newBody.write("""
-          <tr><td colspan='3' class='unittest-pass'>
-            All ${passed} tests passed
-          </td></tr>""");
-    } else {
-      newBody.write("""
-          <tr><td colspan='3'>Total
-            <span class='unittest-pass'>${passed} passed</span>,
-            <span class='unittest-fail'>${failed} failed</span>
-            <span class='unittest-error'>
-            ${errors + (uncaughtError == null ? 0 : 1)} errors</span>
-          </td></tr>""");
-    }
-    newBody.write("</tbody></table>");
-    document.body.innerHtml = newBody.toString();
-
-    window.onHashChange.listen((_) {
-      // Location may change from individual tests setting the hash tag.
-      if (window.location.hash != null &&
-          window.location.hash.contains('testFilter')) {
-        window.location.reload();
-      }
-    });
-  }
-}
-
-String _toHtml(TestCase test_) {
-  if (!test_.isComplete) {
-    return '''
-        <tr>
-          <td>${test_.id}</td>
-          <td class="unittest-error">NO STATUS</td>
-          <td>Test did not complete</td>
-        </tr>''';
-  }
-
-  var html = '''
-      <tr>
-        <td>${test_.id}</td>
-        <td class="unittest-${test_.result}">${test_.result.toUpperCase()}</td>
-        <td>Expectation: <a href="#testFilter=${test_.description}">${test_.description}</a>. ${HTML_ESCAPE.convert(test_.message)}</td>
-      </tr>''';
-
-  if (test_.stackTrace != null) {
-    html = '$html<tr><td></td><td colspan="2"><pre>' +
-        HTML_ESCAPE.convert(test_.stackTrace.toString()) +
-        '</pre></td></tr>';
-  }
-
-  return html;
-}
-
-class HtmlConfiguration extends SimpleConfiguration {
-  /// Whether this is run within dartium layout tests.
-  final bool _isLayoutTest;
-  HtmlConfiguration(this._isLayoutTest);
-
-  StreamSubscription<Event> _onErrorSubscription;
-  StreamSubscription<Event> _onMessageSubscription;
-
-  void _installHandlers() {
-    if (_onErrorSubscription == null) {
-      _onErrorSubscription = window.onError.listen(
-        (e) {
-          // Some tests may expect this and have no way to suppress the error.
-          if (js.context['testExpectsGlobalError'] != true) {
-            handleExternalError(e, '(DOM callback has errors)');
-          }
-        });
-    }
-    if (_onMessageSubscription == null) {
-      _onMessageSubscription = window.onMessage.listen(
-        (e) => processMessage(e));
-    }
-  }
-
-  void _uninstallHandlers() {
-    if (_onErrorSubscription != null) {
-      _onErrorSubscription.cancel();
-      _onErrorSubscription = null;
-    }
-    if (_onMessageSubscription != null) {
-      _onMessageSubscription.cancel();
-      _onMessageSubscription = null;
-    }
-  }
-
-  void processMessage(e) {
-    if ('unittest-suite-external-error' == e.data) {
-      handleExternalError('<unknown>', '(external error detected)');
-    }
-  }
-
-  void onInit() {
-    // For Dart internal tests, we want to turn off stack frame
-    // filtering, which we do with this meta-header.
-    var meta = querySelector('meta[name="dart.unittest"]');
-    filterStacks = meta == null ? true :
-        !meta.content.contains('full-stack-traces');
-    _installHandlers();
-    window.postMessage('unittest-suite-wait-for-done', '*');
-  }
-
-  void onStart() {
-    // If the URL has a #testFilter=testName then filter tests to that.
-    // This is used to make it easy to run a single test- but is only intended
-    // for interactive debugging scenarios.
-    var hash = window.location.hash;
-    if (hash != null && hash.length > 1) {
-      var params = hash.substring(1).split('&');
-      for (var param in params) {
-        var parts = param.split('=');
-        if (parts.length == 2 && parts[0] == 'testFilter') {
-          filterTests('^${parts[1]}');
-        }
-      }
-    }
-    super.onStart();
-  }
-
-  void onSummary(int passed, int failed, int errors, List<TestCase> results,
-      String uncaughtError) {
-    _showResultsInPage(passed, failed, errors, results, _isLayoutTest,
-        uncaughtError);
-  }
-
-  void onDone(bool success) {
-    _uninstallHandlers();
-    window.postMessage('unittest-suite-done', '*');
-  }
-}
-
-void useHtmlConfiguration([bool isLayoutTest = false]) {
-  unittestConfiguration = isLayoutTest ? _singletonLayout : _singletonNotLayout;
-}
-
-final _singletonLayout = new HtmlConfiguration(true);
-final _singletonNotLayout = new HtmlConfiguration(false);