Add all dart:html tests from the sdk to test/codegen.

test/codegen/lib/html/streams_test.dart

+library streams_test;
+import 'package:unittest/unittest.dart';
+import 'package:unittest/html_config.dart';
+import 'dart:async';
+import 'dart:html';
+
+class StreamHelper {
+  var _a;
+  StreamHelper() {
+    _a = new TextInputElement();
+    document.body.append(_a);
+  }
+
+  Element get element => _a;
+  Stream<Event> get stream => _a.onFocus;
+
+  // Causes an event on a to be fired.
+  void pulse() {
+    var event = new Event('focus');
+    _a.dispatchEvent(event);
+  }
+}
+
+main() {
+  useHtmlConfiguration();
+
+  test('simple', () {
+    var helper = new StreamHelper();
+
+    var callCount = 0;
+    helper.stream.listen((Event e) {
+      ++callCount;
+    });
+
+    helper.pulse();
+    expect(callCount, 1);
+  });
+
+  test('broadcast', () {
+    var stream = new DivElement().onClick;
+    expect(stream.asBroadcastStream(), stream);
+    expect(stream.isBroadcast, isTrue);
+  });
+
+  // Validates that capturing events fire on parent before child.
+  test('capture', () {
+    var parent = new DivElement();
+    document.body.append(parent);
+
+    var helper = new StreamHelper();
+    parent.append(helper.element);
+
+    var childCallCount = 0;
+    var parentCallCount = 0;
+    Element.focusEvent.forTarget(parent, useCapture: true).listen((Event e) {
+      ++parentCallCount;
+      expect(childCallCount, 0);
+    });
+
+    Element.focusEvent.forTarget(helper.element, useCapture: true).listen(
+        (Event e) {
+          ++childCallCount;
+          expect(parentCallCount, 1);
+        });
+
+    helper.pulse();
+    expect(childCallCount, 1);
+    expect(parentCallCount, 1);
+  });
+
+  test('cancel', () {
+    var helper = new StreamHelper();
+
+    var callCount = 0;
+    var subscription = helper.stream.listen((_) {
+      ++callCount;
+    });
+
+    helper.pulse();
+    expect(callCount, 1);
+
+    subscription.cancel();
+    helper.pulse();
+    expect(callCount, 1);
+
+    expect(() {
+      subscription.onData((_) {});
+    }, throws);
+
+    // Calling these after a cancel does nothing.
+    subscription.cancel();
+    subscription.pause();
+    subscription.resume();
+  });
+
+  test('pause/resume', () {
+    var helper = new StreamHelper();
+
+    var callCount = 0;
+    var subscription = helper.stream.listen((_) {
+      ++callCount;
+    });
+
+    helper.pulse();
+    expect(callCount, 1);
+
+    subscription.pause();
+    helper.pulse();
+    expect(callCount, 1);
+
+    subscription.resume();
+    helper.pulse();
+    expect(callCount, 2);
+
+    var completer = new Completer<int>.sync();
+    subscription.pause(completer.future);
+    helper.pulse();
+    expect(callCount, 2);
+
+    // Paused, should have no impact.
+    subscription.pause();
+    helper.pulse();
+    subscription.resume();
+    helper.pulse();
+    expect(callCount, 2);
+
+    completer.complete(0);
+    helper.pulse();
+    expect(callCount, 3);
+
+    // Not paused, but resuming once too often is ok.
+    subscription.resume();
+  });
+
+  test('onData', () {
+    var helper = new StreamHelper();
+
+    var callCountOne = 0;
+    var subscription = helper.stream.listen((_) {
+      ++callCountOne;
+    });
+
+    helper.pulse();
+    expect(callCountOne, 1);
+
+    var callCountTwo = 0;
+    subscription.onData((_) {
+      ++callCountTwo;
+    });
+
+    helper.pulse();
+    expect(callCountOne, 1);
+    expect(callCountTwo, 1);
+  });
+
+  test('null onData', () {
+    var helper = new StreamHelper();
+
+    var subscription = helper.stream.listen(null);
+    helper.pulse();
+
+    var callCountOne = 0;
+    subscription.onData((_) {
+      ++callCountOne;
+    });
+    helper.pulse();
+    expect(callCountOne, 1);
+
+    subscription.onData(null);
+    helper.pulse();
+    expect(callCountOne, 1);
+  });
+
+  var stream = new StreamHelper().stream;
+  // Streams have had some type-checking issues, these tests just validate that
+  // those are OK.
+  test('first', () {
+    stream.first.then((_) {});
+  });
+
+  test('asBroadcastStream', () {
+    stream.asBroadcastStream().listen((_) {});
+  });
+
+  test('where', () {
+    stream.where((_) => true).listen((_) {});
+  });
+
+  test('map', () {
+    stream.map((_) => null).listen((_) {});
+  });
+
+  test('reduce', () {
+    stream.reduce((a, b) => null).then((_) {});
+  });
+
+  test('fold', () {
+    stream.fold(null, (a, b) => null).then((_) {});
+  });
+
+  test('contains', () {
+    stream.contains((_) => true).then((_) {});
+  });
+
+  test('every', () {
+    stream.every((_) => true).then((_) {});
+  });
+
+  test('any', () {
+    stream.any((_) => true).then((_) {});
+  });
+
+  test('length', () {
+    stream.length.then((_) {});
+  });
+
+  test('isEmpty', () {
+    stream.isEmpty.then((_) {});
+  });
+
+  test('toList', () {
+    stream.toList().then((_) {});
+  });
+
+  test('toSet', () {
+    stream.toSet().then((_) {});
+  });
+
+  test('take', () {
+    stream.take(1).listen((_) {});
+  });
+
+  test('takeWhile', () {
+    stream.takeWhile((_) => false).listen((_) {});
+  });
+
+  test('skip', () {
+    stream.skip(0).listen((_) {});
+  });
+
+  test('skipWhile', () {
+    stream.skipWhile((_) => false).listen((_) {});
+  });
+
+  test('distinct', () {
+    stream.distinct((a, b) => false).listen((_) {});
+  });
+
+  test('first', () {
+    stream.first.then((_) {});
+  });
+
+  test('last', () {
+    stream.last.then((_) {});
+  });
+
+  test('single', () {
+    stream.single.then((_) {});
+  });
+
+  test('firstWhere', () {
+    stream.firstWhere((_) => true).then((_) {});
+  });
+
+  test('lastWhere', () {
+    stream.lastWhere((_) => true).then((_) {});
+  });
+
+  test('singleWhere', () {
+    stream.singleWhere((_) => true).then((_) {});
+  });
+
+  test('elementAt', () {
+    stream.elementAt(0).then((_) {});
+  });
+}