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packages/template_binding/test/node_bind_test.dart

Index: packages/template_binding/test/node_bind_test.dart
diff --git a/packages/template_binding/test/node_bind_test.dart b/packages/template_binding/test/node_bind_test.dart
new file mode 100644
index 0000000000000000000000000000000000000000..b797657dd3f23cd9c69f6c1a2f38a880d90a8d0c
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+// 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.
+
+library template_binding.test.node_bind_test;
+
+import 'dart:async';
+import 'dart:html';
+
+import 'package:observe/observe.dart'
+    show toObservable, PathObserver, PropertyPath;
+import 'package:template_binding/template_binding.dart'
+    show nodeBind, enableBindingsReflection;
+import 'package:observe/mirrors_used.dart'; // make test smaller
+import 'package:smoke/mirrors.dart' as smoke;
+
+import 'package:unittest/html_config.dart';
+import 'package:unittest/unittest.dart';
+import 'utils.dart';
+
+// Ported from: https://github.com/Polymer/NodeBind/blob/master/tests/tests.js
+
+var bindings;
+
+main() => dirtyCheckZone().run(() {
+  smoke.useMirrors();
+  useHtmlConfiguration();
+
+  setUp(() {
+    document.body.append(testDiv = new DivElement());
+    bindings = [];
+  });
+
+  tearDown(() {
+    testDiv.remove();
+    testDiv = null;
+    for (var b in bindings) if (b != null) b.close();
+    bindings = null;
+  });
+
+  group('Text bindings', testBindings);
+  group('Element attribute bindings', elementBindings);
+  group('Form Element bindings', formBindings);
+});
+
+testBindings() {
+  test('Basic', () {
+    var text = new Text('hi');
+    var model = toObservable({'a': 1});
+    bindings.add(nodeBind(text).bind('text', new PathObserver(model, 'a')));
+    expect(text.text, '1');
+
+    model['a'] = 2;
+    return new Future(() {
+      expect(text.text, '2');
+    });
+  });
+
+  test('oneTime', () {
+    var text = new Text('hi');
+    bindings.add(nodeBind(text).bind('text', 1, oneTime: true));
+    expect(text.text, '1');
+  });
+
+  test('No Path', () {
+    var text = new Text('hi');
+    var model = 1;
+    bindings.add(nodeBind(text).bind('text', new PathObserver(model)));
+    expect(text.text, '1');
+  });
+
+  test('Path unreachable', () {
+    var text = testDiv.append(new Text('hi'));
+    var model = 1;
+    var pathObserver = new PathObserver(model, 'a');
+    expect(() => nodeBind(text).bind('text', pathObserver), throws);
+    expect(text.text, 'hi');
+  });
+
+  test('Observer is Model', () {
+    // Dart note: we don't have _allObserversCount so we use binding reflection
+    // instead.
+    enableBindingsReflection = true;
+
+    // This future is here so we can turn off bindings reflection reliably.
+    Text text;
+    return new Future(() {
+      text = new Text('');
+      var model = toObservable({'a': {'b': {'c': 1}}});
+      var observer = new PathObserver(model, 'a.b.c');
+      bindings.add(nodeBind(text).bind('text', observer));
+      expect(text.text, '1');
+
+      var binding = nodeBind(text).bindings['text'];
+      expect(binding, observer, reason: 'should reuse observer');
+
+      model['a']['b']['c'] = 2;
+    }).then(endOfMicrotask).then((_) {
+      expect(text.text, '2');
+    }).whenComplete(() {
+      enableBindingsReflection = false;
+    });
+  });
+}
+
+elementBindings() {
+
+  test('Basic', () {
+    var el = new DivElement();
+    var model = toObservable({'a': '1'});
+    bindings.add(nodeBind(el).bind('foo', new PathObserver(model, 'a')));
+
+    return new Future(() {
+      expect(el.attributes['foo'], '1');
+      model['a'] = '2';
+    }).then(endOfMicrotask).then((_) {
+      expect(el.attributes['foo'], '2');
+      model['a'] = 232.2;
+    }).then(endOfMicrotask).then((_) {
+      expect(el.attributes['foo'], '232.2');
+      model['a'] = 232;
+    }).then(endOfMicrotask).then((_) {
+      expect(el.attributes['foo'], '232');
+      model['a'] = null;
+    }).then(endOfMicrotask).then((_) {
+      expect(el.attributes['foo'], '');
+    });
+  });
+
+  // Dart specific test
+  test('enableBindingsReflection defaults to off', () {
+    expect(enableBindingsReflection, false);
+
+    var el = new DivElement();
+    var model = toObservable({'a': '1'});
+    bindings.add(nodeBind(el).bind('foo', new PathObserver(model, 'a')));
+
+    expect(nodeBind(el).bindings, null);
+  });
+
+  test('enableBindingsReflection', () {
+    enableBindingsReflection = true;
+    try {
+      var el = testDiv.append(new DivElement());
+      var model = toObservable({'a': '1'});
+      bindings.add(nodeBind(el).bind('foo', new PathObserver(model, 'a')));
+      bindings.add(nodeBind(el).bind('bar', new PathObserver(model, 'a')));
+      bindings.add(nodeBind(el).bind('baz', new PathObserver(model, 'a')));
+
+      expect(nodeBind(el).bindings.keys,
+          unorderedEquals(['foo', 'bar', 'baz']));
+
+    } finally {
+      enableBindingsReflection = false;
+    }
+  });
+
+  test('oneTime', () {
+    var el = testDiv.append(new DivElement());
+    var model = toObservable({'a': '1'});
+    bindings.add(nodeBind(el).bind('foo', 1, oneTime: true));
+    expect('1', el.attributes['foo']);
+  });
+
+  test('No Path', () {
+    var el = testDiv.append(new DivElement());
+    var model = 1;
+    bindings.add(nodeBind(el).bind('foo', new PathObserver(model)));
+    return new Future(() {
+      expect(el.attributes['foo'], '1');
+    });
+  });
+
+  test('Path unreachable', () {
+    var el = testDiv.append(new DivElement());
+    var model = toObservable({});
+    bindings.add(nodeBind(el).bind('foo', new PathObserver(model, 'bar')));
+    return new Future(() {
+      expect(el.attributes['foo'], '');
+    });
+  });
+
+  test('Dashes', () {
+    var el = testDiv.append(new DivElement());
+    var model = toObservable({'a': '1'});
+    bindings.add(nodeBind(el).bind('foo-bar', new PathObserver(model, 'a')));
+    return new Future(() {
+      expect(el.attributes['foo-bar'], '1');
+      model['a'] = '2';
+
+    }).then(endOfMicrotask).then((_) {
+      expect(el.attributes['foo-bar'], '2');
+    });
+  });
+
+  test('Element.id, Element.hidden?', () {
+    var element = new DivElement();
+    var model = toObservable({'a': 1, 'b': 2});
+    bindings.add(
+        nodeBind(element).bind('hidden?', new PathObserver(model, 'a')));
+    bindings.add(nodeBind(element).bind('id', new PathObserver(model, 'b')));
+
+    expect(element.attributes, contains('hidden'));
+    expect(element.attributes['hidden'], '');
+    expect(element.id, '2');
+
+    model['a'] = null;
+    return new Future(() {
+      expect(element.attributes, isNot(contains('hidden')),
+          reason: 'null is false-y');
+
+      model['a'] = false;
+    }).then(endOfMicrotask).then((_) {
+      expect(element.attributes, isNot(contains('hidden')));
+
+      model['a'] = 'foo';
+      model['b'] = 'x';
+    }).then(endOfMicrotask).then((_) {
+      expect(element.attributes, contains('hidden'));
+      expect(element.attributes['hidden'], '');
+      expect(element.id, 'x');
+    });
+  });
+
+  test('Element.id - path unreachable', () {
+    var element = testDiv.append(new DivElement());
+    var model = toObservable({});
+    bindings.add(nodeBind(element).bind('id', new PathObserver(model, 'a')));
+    return new Future(() => expect(element.id, ''));
+  });
+}
+
+formBindings() {
+  inputTextAreaValueTest(String tagName) {
+    var el = new Element.tag(tagName);
+    testDiv.nodes.add(el);
+    var model = toObservable({'x': 42});
+    bindings.add(nodeBind(el).bind('value', new PathObserver(model, 'x')));
+    expect(el.value, '42');
+
+    model['x'] = 'Hi';
+    expect(el.value, '42', reason: 'changes delivered async');
+    return new Future(() {
+      expect(el.value, 'Hi');
+
+      el.value = 'changed';
+      dispatchEvent('input', el);
+      expect(model['x'], 'changed');
+    });
+  }
+
+  inputTextAreaValueOnetime(String tagName) {
+    var el = testDiv.append(new Element.tag(tagName));
+    bindings.add(nodeBind(el).bind('value', 42, oneTime: true));
+    expect(el.value, '42');
+  }
+
+  inputTextAreaNoPath(String tagName) {
+    var el = testDiv.append(new Element.tag(tagName));
+    var model = 42;
+    bindings.add(nodeBind(el).bind('value', new PathObserver(model)));
+    expect(el.value, '42');
+  }
+
+  inputTextAreaPathUnreachable(String tagName) {
+    var el = testDiv.append(new Element.tag(tagName));
+    var model = toObservable({});
+    bindings.add(nodeBind(el).bind('value', new PathObserver(model, 'a')));
+    expect(el.value, '');
+  }
+
+  test('Input.value',
+      () => inputTextAreaValueTest('input'));
+
+  test('Input.value - oneTime',
+      () => inputTextAreaValueOnetime('input'));
+
+  test('Input.value - no path',
+      () => inputTextAreaNoPath('input'));
+
+  test('Input.value - path unreachable',
+      () => inputTextAreaPathUnreachable('input'));
+
+  test('TextArea.value',
+      () => inputTextAreaValueTest('textarea'));
+
+  test('TextArea.value - oneTime',
+      () => inputTextAreaValueOnetime('textarea'));
+
+  test('TextArea.value - no path',
+      () => inputTextAreaNoPath('textarea'));
+
+  test('TextArea.value - path unreachable',
+      () => inputTextAreaPathUnreachable('textarea'));
+
+  test('Radio Input', () {
+    var input = new InputElement();
+    input.type = 'radio';
+    var model = toObservable({'x': true});
+    bindings.add(nodeBind(input).bind('checked', new PathObserver(model, 'x')));
+    expect(input.checked, true);
+
+    model['x'] = false;
+    expect(input.checked, true);
+    return new Future(() {
+      expect(input.checked, false,reason: 'model change should update checked');
+
+      input.checked = true;
+      dispatchEvent('change', input);
+      expect(model['x'], true, reason: 'input.checked should set model');
+
+      bindings[0].close();
+
+      input.checked = false;
+      dispatchEvent('change', input);
+      expect(model['x'], true,
+          reason: 'disconnected binding should not fire');
+    });
+  });
+
+  test('Input.value - user value rejected', () {
+    var model = toObservable({'val': 'ping'});
+
+    var rejector = new PathObserver(model, 'val');
+    rejector.open(() {
+      model['val'] = 'ping';
+    });
+
+    var el = new InputElement();
+    bindings.add(nodeBind(el).bind('value', new PathObserver(model, 'val')));
+
+    return new Future(() {
+      expect(el.value, 'ping');
+
+      el.value = 'pong';
+      dispatchEvent('input', el);
+
+    }).then(endOfMicrotask).then((_) {
+      // rejector will have set the bound value back to 'ping'.
+      expect(el.value, 'ping');
+
+      rejector.close();
+    });
+  });
+
+  test('Checkbox Input.checked', () {
+    var el = testDiv.append(new InputElement());
+    el.type = 'checkbox';
+
+    var model = toObservable({'x': true});
+    bindings.add(nodeBind(el).bind('checked', new PathObserver(model, 'x')));
+    expect(el.checked, true);
+
+    model['x'] = false;
+    expect(el.checked, true, reason: 'changes delivered async');
+    return new Future(() {
+      expect(el.checked, false);
+
+      el.click();
+      expect(model['x'], true);
+    }).then(endOfMicrotask).then((_) {
+
+      el.click();
+      expect(model['x'], false);
+    });
+  });
+
+  test('Checkbox Input.checked - oneTime', () {
+    var input = testDiv.append(new InputElement());
+    input.type = 'checkbox';
+    bindings.add(nodeBind(input).bind('checked', true, oneTime: true));
+    expect(input.checked, true, reason: 'checked was set');
+  });
+
+  test('Checkbox Input.checked - path unreachable', () {
+    var input = testDiv.append(new InputElement());
+    input.type = 'checkbox';
+    var model = toObservable({});
+    bindings.add(nodeBind(input).bind('checked', new PathObserver(model, 'x')));
+    expect(input.checked, false);
+  });
+
+  test('Checkbox Input.checked 2', () {
+    var model = toObservable({'val': true});
+
+    var el = testDiv.append(new InputElement());
+    el.type = 'checkbox';
+    bindings.add(nodeBind(el).bind('checked', new PathObserver(model, 'val')));
+    return new Future(() {
+      expect(el.checked, true);
+
+      model['val'] = false;
+    }).then(endOfMicrotask).then((_) {
+      expect(el.checked, false);
+
+      el.click();
+      expect(model['val'], true);
+
+      el.click();
+      expect(model['val'], false);
+
+      el.onClick.listen((_) {
+        expect(model['val'], true);
+      });
+      el.onChange.listen((_) {
+        expect(model['val'], true);
+      });
+
+      el.dispatchEvent(new MouseEvent('click', view: window));
+    });
+  });
+
+  test('Checkbox Input.checked - binding updated on click', () {
+    var model = toObservable({'val': true});
+
+    var el = new InputElement();
+    testDiv.append(el);
+    el.type = 'checkbox';
+    bindings.add(nodeBind(el).bind('checked', new PathObserver(model, 'val')));
+    return new Future(() {
+      expect(el.checked, true);
+
+      int fired = 0;
+      el.onClick.listen((_) {
+        fired++;
+        expect(model['val'], false);
+      });
+
+      el.dispatchEvent(new MouseEvent('click', view: window));
+
+      expect(fired, 1, reason: 'events dispatched synchronously');
+    });
+  });
+
+  test('Checkbox Input.checked - binding updated on change', () {
+    var model = toObservable({'val': true});
+
+    var el = new InputElement();
+    testDiv.append(el);
+    el.type = 'checkbox';
+    bindings.add(nodeBind(el).bind('checked', new PathObserver(model, 'val')));
+    return new Future(() {
+      expect(el.checked, true);
+
+      int fired = 0;
+      el.onChange.listen((_) {
+        fired++;
+        expect(model['val'], false);
+      });
+
+      el.dispatchEvent(new MouseEvent('click', view: window));
+
+      expect(fired, 1, reason: 'events dispatched synchronously');
+    });
+  });
+
+  test('Radio Input.checked', () {
+    var input = testDiv.append(new InputElement());
+    input.type = 'radio';
+    var model = toObservable({'x': true});
+    bindings.add(nodeBind(input).bind('checked', new PathObserver(model, 'x')));
+    expect(input.checked, true);
+
+    model['x'] = false;
+    expect(input.checked, true);
+    return new Future(() {
+      expect(input.checked, false);
+
+      input.checked = true;
+      dispatchEvent('change', input);
+      expect(model['x'], true);
+    });
+  });
+
+  test('Radio Input.checked - oneTime', () {
+    var input = testDiv.append(new InputElement());
+    input.type = 'radio';
+    bindings.add(nodeBind(input).bind('checked', true, oneTime: true));
+    expect(input.checked, true, reason: 'checked was set');
+  });
+
+  radioInputChecked2(host) {
+    var model = toObservable({'val1': true, 'val2': false, 'val3': false,
+        'val4': true});
+    var RADIO_GROUP_NAME = 'test';
+
+    var container = host.append(new DivElement());
+
+    var el1 = container.append(new InputElement());
+    el1.type = 'radio';
+    el1.name = RADIO_GROUP_NAME;
+    bindings.add(
+        nodeBind(el1).bind('checked', new PathObserver(model, 'val1')));
+
+    var el2 = container.append(new InputElement());
+    el2.type = 'radio';
+    el2.name = RADIO_GROUP_NAME;
+    bindings.add(
+        nodeBind(el2).bind('checked', new PathObserver(model, 'val2')));
+
+    var el3 = container.append(new InputElement());
+    el3.type = 'radio';
+    el3.name = RADIO_GROUP_NAME;
+    bindings.add(
+        nodeBind(el3).bind('checked', new PathObserver(model, 'val3')));
+
+    var el4 = container.append(new InputElement());
+    el4.type = 'radio';
+    el4.name = 'othergroup';
+    bindings.add(
+        nodeBind(el4).bind('checked', new PathObserver(model, 'val4')));
+
+    return new Future(() {
+      expect(el1.checked, true);
+      expect(el2.checked, false);
+      expect(el3.checked, false);
+      expect(el4.checked, true);
+
+      model['val1'] = false;
+      model['val2'] = true;
+    }).then(endOfMicrotask).then((_) {
+      expect(el1.checked, false);
+      expect(el2.checked, true);
+      expect(el3.checked, false);
+      expect(el4.checked, true);
+
+      el1.checked = true;
+      dispatchEvent('change', el1);
+      expect(model['val1'], true);
+      expect(model['val2'], false);
+      expect(model['val3'], false);
+      expect(model['val4'], true);
+
+      el3.checked = true;
+      dispatchEvent('change', el3);
+      expect(model['val1'], false);
+      expect(model['val2'], false);
+      expect(model['val3'], true);
+      expect(model['val4'], true);
+    });
+  }
+
+  test('Radio Input.checked 2', () => radioInputChecked2(testDiv));
+
+  test('Radio Input.checked 2 - ShadowRoot', () {
+    if (!ShadowRoot.supported) return null;
+
+    var shadowRoot = new DivElement().createShadowRoot();
+    return radioInputChecked2(shadowRoot);
+  });
+
+  radioInputCheckedMultipleForms(host) {
+    var model = toObservable({'val1': true, 'val2': false, 'val3': false,
+        'val4': true});
+    var RADIO_GROUP_NAME = 'test';
+
+    var container = testDiv.append(new DivElement());
+    var form1 = new FormElement();
+    container.append(form1);
+    var form2 = new FormElement();
+    container.append(form2);
+
+    var el1 = new InputElement();
+    form1.append(el1);
+    el1.type = 'radio';
+    el1.name = RADIO_GROUP_NAME;
+    bindings.add(
+        nodeBind(el1).bind('checked', new PathObserver(model, 'val1')));
+
+    var el2 = new InputElement();
+    form1.append(el2);
+    el2.type = 'radio';
+    el2.name = RADIO_GROUP_NAME;
+    bindings.add(
+        nodeBind(el2).bind('checked', new PathObserver(model, 'val2')));
+
+    var el3 = new InputElement();
+    form2.append(el3);
+    el3.type = 'radio';
+    el3.name = RADIO_GROUP_NAME;
+    bindings.add(
+        nodeBind(el3).bind('checked', new PathObserver(model, 'val3')));
+
+    var el4 = new InputElement();
+    form2.append(el4);
+    el4.type = 'radio';
+    el4.name = RADIO_GROUP_NAME;
+    bindings.add(
+        nodeBind(el4).bind('checked', new PathObserver(model, 'val4')));
+
+    return new Future(() {
+      expect(el1.checked, true);
+      expect(el2.checked, false);
+      expect(el3.checked, false);
+      expect(el4.checked, true);
+
+      el2.checked = true;
+      dispatchEvent('change', el2);
+      expect(model['val1'], false);
+      expect(model['val2'], true);
+
+      // Radio buttons in form2 should be unaffected
+      expect(model['val3'], false);
+      expect(model['val4'], true);
+
+      el3.checked = true;
+      dispatchEvent('change', el3);
+      expect(model['val3'], true);
+      expect(model['val4'], false);
+
+      // Radio buttons in form1 should be unaffected
+      expect(model['val1'], false);
+      expect(model['val2'], true);
+    });
+  }
+
+  test('Radio Input.checked - multiple forms', () {
+    return radioInputCheckedMultipleForms(testDiv);
+  });
+
+  test('Radio Input.checked - multiple forms - ShadowRoot', () {
+    if (!ShadowRoot.supported) return null;
+
+    var shadowRoot = new DivElement().createShadowRoot();
+    return radioInputCheckedMultipleForms(shadowRoot);
+  });
+
+  test('Select.selectedIndex', () {
+    var select = new SelectElement();
+    testDiv.append(select);
+    var option0 = select.append(new OptionElement());
+    var option1 = select.append(new OptionElement());
+    var option2 = select.append(new OptionElement());
+
+    var model = toObservable({'val': 2});
+
+    bindings.add(
+        nodeBind(select).bind('selectedIndex', new PathObserver(model, 'val')));
+    return new Future(() {
+      expect(select.selectedIndex, 2);
+
+      select.selectedIndex = 1;
+      dispatchEvent('change', select);
+      expect(model['val'], 1);
+    });
+  });
+
+  test('Select.selectedIndex - oneTime', () {
+    var select = new SelectElement();
+    testDiv.append(select);
+    var option0 = select.append(new OptionElement());
+    var option1 = select.append(new OptionElement());
+    var option2 = select.append(new OptionElement());
+
+    bindings.add(nodeBind(select).bind('selectedIndex', 2, oneTime: true));
+    return new Future(() => expect(select.selectedIndex, 2));
+  });
+
+  test('Select.selectedIndex - invalid path', () {
+    var select = new SelectElement();
+    testDiv.append(select);
+    var option0 = select.append(new OptionElement());
+    var option1 = select.append(new OptionElement());
+    option1.selected = true;
+    var option2 = select.append(new OptionElement());
+
+    var model = toObservable({'val': 'foo'});
+
+    bindings.add(
+        nodeBind(select).bind('selectedIndex', new PathObserver(model, 'val')));
+    return new Future(() => expect(select.selectedIndex, 0));
+  });
+
+  test('Select.selectedIndex - path unreachable', () {
+    var select = new SelectElement();
+    testDiv.append(select);
+    var option0 = select.append(new OptionElement());
+    var option1 = select.append(new OptionElement());
+    option1.selected = true;
+    var option2 = select.append(new OptionElement());
+
+    var model = toObservable({});
+
+    bindings.add(
+        nodeBind(select).bind('selectedIndex', new PathObserver(model, 'val')));
+    return new Future(() => expect(select.selectedIndex, 0));
+  });
+
+  test('Option.value', () {
+    var option = testDiv.append(new OptionElement());
+    var model = toObservable({'x': 42});
+    bindings.add(nodeBind(option).bind('value', new PathObserver(model, 'x')));
+    expect(option.value, '42');
+
+    model['x'] = 'Hi';
+    expect(option.value, '42');
+    return new Future(() => expect(option.value, 'Hi'));
+  });
+
+  test('Option.value - oneTime', () {
+    var option = testDiv.append(new OptionElement());
+    bindings.add(nodeBind(option).bind('value', 42, oneTime: true));
+    expect(option.value, '42');
+  });
+
+  test('Select.value', () {
+    var select = testDiv.append(new SelectElement());
+    testDiv.append(select);
+    var option0 = select.append(new OptionElement());
+    var option1 = select.append(new OptionElement());
+    var option2 = select.append(new OptionElement());
+
+    var model = toObservable({
+      'opt0': 'a',
+      'opt1': 'b',
+      'opt2': 'c',
+      'selected': 'b'
+    });
+
+    bindings.add(
+        nodeBind(option0).bind('value', new PathObserver(model, 'opt0')));
+    bindings.add(
+        nodeBind(option1).bind('value', new PathObserver(model, 'opt1')));
+    bindings.add(
+        nodeBind(option2).bind('value', new PathObserver(model, 'opt2')));
+    bindings.add(
+        nodeBind(select).bind('value', new PathObserver(model, 'selected')));
+    return new Future(() {
+      expect(select.value, 'b');
+
+      select.value = 'c';
+      dispatchEvent('change', select);
+      expect(model['selected'], 'c');
+
+      model['opt2'] = 'X';
+    }).then(endOfMicrotask).then((_) {
+      expect(select.value, 'X');
+      expect(model['selected'], 'X');
+
+      model['selected'] = 'a';
+    }).then(endOfMicrotask).then((_) {
+      expect(select.value, 'a');
+    });
+  });
+}