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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_element_test;
import 'dart:async';
import 'dart:collection';
import 'dart:html';
import 'dart:math' as math;
import 'package:mdv/mdv.dart' as mdv;
import 'package:observe/observe.dart';
import 'package:unittest/html_config.dart';
import 'package:unittest/unittest.dart';
import 'mdv_test_utils.dart';
// Note: this file ported from
// https://github.com/toolkitchen/mdv/blob/master/tests/template_element.js
// TODO(jmesserly): submit a small cleanup patch to original. I fixed some
// cases where "div" and "t" were unintentionally using the JS global scope;
// look for "assertNodesAre".
main() {
mdv.initialize();
useHtmlConfiguration();
group('Template Element', templateElementTests);
}
templateElementTests() {
var testDiv;
setUp(() {
document.body.append(testDiv = new DivElement());
});
tearDown(() {
testDiv.remove();
testDiv = null;
});
createTestHtml(s) {
var div = new DivElement();
div.innerHtml = s;
testDiv.append(div);
for (var node in div.queryAll('*')) {
if (node.isTemplate) TemplateElement.decorate(node);
}
return div;
}
createShadowTestHtml(s) {
var div = new DivElement();
var root = div.createShadowRoot();
root.innerHtml = s;
testDiv.append(div);
for (var node in root.queryAll('*')) {
if (node.isTemplate) TemplateElement.decorate(node);
}
return root;
}
var expando = new Expando('observeTest');
void addExpandos(node) {
while (node != null) {
expando[node] = node.text;
node = node.nextNode;
}
}
void checkExpandos(node) {
expect(node, isNotNull);
while (node != null) {
expect(expando[node], node.text);
node = node.nextNode;
}
}
observeTest('Template', () {
var div = createTestHtml('<template bind={{}}>text</template>');
recursivelySetTemplateModel(div, null);
performMicrotaskCheckpoint();
expect(div.nodes.length, 2);
expect(div.nodes.last.text, 'text');
});
observeTest('Template bind, no parent', () {
var div = createTestHtml('<template bind>text</template>');
var template = div.nodes[0];
template.remove();
recursivelySetTemplateModel(template, toSymbolMap({}));
performMicrotaskCheckpoint();
expect(template.nodes.length, 0);
expect(template.nextNode, null);
});
observeTest('Template bind, no defaultView', () {
var div = createTestHtml('<template bind>text</template>');
var template = div.nodes[0];
var doc = document.implementation.createHtmlDocument('');
doc.adoptNode(div);
recursivelySetTemplateModel(template, toSymbolMap({}));
performMicrotaskCheckpoint();
expect(div.nodes.length, 1);
});
observeTest('Template-Empty Bind', () {
var div = createTestHtml('<template bind>text</template>');
recursivelySetTemplateModel(div, null);
performMicrotaskCheckpoint();
expect(div.nodes.length, 2);
expect(div.nodes.last.text, 'text');
});
observeTest('Template Bind If', () {
var div = createTestHtml('<template bind if="{{ foo }}">text</template>');
// Note: changed this value from 0->null because zero is not falsey in Dart.
// See https://code.google.com/p/dart/issues/detail?id=11956
var m = toSymbolMap({ 'foo': null });
recursivelySetTemplateModel(div, m);
performMicrotaskCheckpoint();
expect(div.nodes.length, 1);
m[sym('foo')] = 1;
performMicrotaskCheckpoint();
expect(div.nodes.length, 2);
expect(div.lastChild.text, 'text');
});
observeTest('Template Bind If, 2', () {
var div = createTestHtml(
'<template bind="{{ foo }}" if="{{ bar }}">{{ bat }}</template>');
var m = toSymbolMap({ 'bar': null, 'foo': { 'bat': 'baz' } });
recursivelySetTemplateModel(div, m);
performMicrotaskCheckpoint();
expect(div.nodes.length, 1);
m[sym('bar')] = 1;
performMicrotaskCheckpoint();
expect(div.nodes.length, 2);
expect(div.lastChild.text, 'baz');
});
observeTest('Template If', () {
var div = createTestHtml('<template if="{{ foo }}">{{ value }}</template>');
// Note: changed this value from 0->null because zero is not falsey in Dart.
// See https://code.google.com/p/dart/issues/detail?id=11956
var m = toSymbolMap({ 'foo': null, 'value': 'foo' });
recursivelySetTemplateModel(div, m);
performMicrotaskCheckpoint();
expect(div.nodes.length, 1);
m[sym('foo')] = 1;
performMicrotaskCheckpoint();
expect(div.nodes.length, 2);
expect(div.lastChild.text, 'foo');
});
observeTest('Template Repeat If', () {
var div = createTestHtml(
'<template repeat="{{ foo }}" if="{{ bar }}">{{ }}</template>');
// Note: changed this value from 0->null because zero is not falsey in Dart.
// See https://code.google.com/p/dart/issues/detail?id=11956
var m = toSymbolMap({ 'bar': null, 'foo': [1, 2, 3] });
recursivelySetTemplateModel(div, m);
performMicrotaskCheckpoint();
expect(div.nodes.length, 1);
m[sym('bar')] = 1;
performMicrotaskCheckpoint();
expect(div.nodes.length, 4);
expect(div.nodes[1].text, '1');
expect(div.nodes[2].text, '2');
expect(div.nodes[3].text, '3');
});
observeTest('TextTemplateWithNullStringBinding', () {
var div = createTestHtml('<template bind={{}}>a{{b}}c</template>');
var model = toSymbolMap({'b': 'B'});
recursivelySetTemplateModel(div, model);
deliverChanges(model);
expect(div.nodes.length, 2);
expect(div.nodes.last.text, 'aBc');
model[sym('b')] = 'b';
deliverChanges(model);
expect(div.nodes.last.text, 'abc');
model[sym('b')] = null;
deliverChanges(model);
expect(div.nodes.last.text, 'ac');
model = null;
deliverChanges(model);
// setting model isn't observable.
expect(div.nodes.last.text, 'ac');
});
observeTest('TextTemplateWithBindingPath', () {
var div = createTestHtml(
'<template bind="{{ data }}">a{{b}}c</template>');
var model = toSymbolMap({ 'data': {'b': 'B'} });
recursivelySetTemplateModel(div, model);
deliverChanges(model);
expect(div.nodes.length, 2);
expect(div.nodes.last.text, 'aBc');
model[sym('data')][sym('b')] = 'b';
deliverChanges(model);
expect(div.nodes.last.text, 'abc');
model[sym('data')] = toSymbols({'b': 'X'});
deliverChanges(model);
expect(div.nodes.last.text, 'aXc');
model[sym('data')] = null;
deliverChanges(model);
expect(div.nodes.last.text, 'ac');
});
observeTest('TextTemplateWithBindingAndConditional', () {
var div = createTestHtml(
'<template bind="{{}}" if="{{ d }}">a{{b}}c</template>');
var model = toSymbolMap({'b': 'B', 'd': 1});
recursivelySetTemplateModel(div, model);
deliverChanges(model);
expect(div.nodes.length, 2);
expect(div.nodes.last.text, 'aBc');
model[sym('b')] = 'b';
deliverChanges(model);
expect(div.nodes.last.text, 'abc');
// TODO(jmesserly): MDV set this to empty string and relies on JS conversion
// rules. Is that intended?
// See https://github.com/toolkitchen/mdv/issues/59
model[sym('d')] = null;
deliverChanges(model);
expect(div.nodes.length, 1);
model[sym('d')] = 'here';
model[sym('b')] = 'd';
deliverChanges(model);
expect(div.nodes.length, 2);
expect(div.nodes.last.text, 'adc');
});
observeTest('TemplateWithTextBinding2', () {
var div = createTestHtml(
'<template bind="{{ b }}">a{{value}}c</template>');
expect(div.nodes.length, 1);
var model = toSymbolMap({'b': {'value': 'B'}});
recursivelySetTemplateModel(div, model);
deliverChanges(model);
expect(div.nodes.length, 2);
expect(div.nodes.last.text, 'aBc');
model[sym('b')] = toSymbols({'value': 'b'});
deliverChanges(model);
expect(div.nodes.last.text, 'abc');
});
observeTest('TemplateWithAttributeBinding', () {
var div = createTestHtml(
'<template bind="{{}}">'
'<div foo="a{{b}}c"></div>'
'</template>');
var model = toSymbolMap({'b': 'B'});
recursivelySetTemplateModel(div, model);
deliverChanges(model);
expect(div.nodes.length, 2);
expect(div.nodes.last.attributes['foo'], 'aBc');
model[sym('b')] = 'b';
deliverChanges(model);
expect(div.nodes.last.attributes['foo'], 'abc');
model[sym('b')] = 'X';
deliverChanges(model);
expect(div.nodes.last.attributes['foo'], 'aXc');
});
observeTest('TemplateWithConditionalBinding', () {
var div = createTestHtml(
'<template bind="{{}}">'
'<div foo?="{{b}}"></div>'
'</template>');
var model = toSymbolMap({'b': 'b'});
recursivelySetTemplateModel(div, model);
deliverChanges(model);
expect(div.nodes.length, 2);
expect(div.nodes.last.attributes['foo'], '');
expect(div.nodes.last.attributes, isNot(contains('foo?')));
model[sym('b')] = null;
deliverChanges(model);
expect(div.nodes.last.attributes, isNot(contains('foo')));
});
observeTest('Repeat', () {
var div = createTestHtml(
'<template repeat="{{}}"">text</template>');
var model = toSymbols([0, 1, 2]);
recursivelySetTemplateModel(div, model);
deliverChanges(model);
expect(div.nodes.length, 4);
model.length = 1;
deliverChanges(model);
expect(div.nodes.length, 2);
model.addAll(toSymbols([3, 4]));
deliverChanges(model);
expect(div.nodes.length, 4);
model.removeRange(1, 2);
deliverChanges(model);
expect(div.nodes.length, 3);
});
observeTest('Repeat - Reuse Instances', () {
var div = createTestHtml('<template repeat>{{ val }}</template>');
var model = toSymbols([
{'val': 10},
{'val': 5},
{'val': 2},
{'val': 8},
{'val': 1}
]);
recursivelySetTemplateModel(div, model);
deliverChanges(model);
expect(div.nodes.length, 6);
var template = div.firstChild;
addExpandos(template.nextNode);
checkExpandos(template.nextNode);
final VAL = const Symbol('val');
model.sort((a, b) => a[VAL] - b[VAL]);
deliverChanges(model);
checkExpandos(template.nextNode);
model = toObservable(model.reversed);
recursivelySetTemplateModel(div, model);
deliverChanges(model);
checkExpandos(template.nextNode);
for (var item in model) {
item[VAL] += 1;
}
deliverChanges(model);
expect(div.nodes[1].text, "11");
expect(div.nodes[2].text, "9");
expect(div.nodes[3].text, "6");
expect(div.nodes[4].text, "3");
expect(div.nodes[5].text, "2");
});
observeTest('Bind - Reuse Instance', () {
var div = createTestHtml(
'<template bind="{{ foo }}">{{ bar }}</template>');
var model = toObservable({ 'foo': { 'bar': 5 }});
recursivelySetTemplateModel(div, model);
deliverChanges(model);
expect(div.nodes.length, 2);
var template = div.firstChild;
addExpandos(template.nextNode);
checkExpandos(template.nextNode);
model = toObservable({'foo': model['foo']});
recursivelySetTemplateModel(div, model);
deliverChanges(model);
checkExpandos(template.nextNode);
});
observeTest('Repeat-Empty', () {
var div = createTestHtml(
'<template repeat>text</template>');
var model = toSymbols([0, 1, 2]);
recursivelySetTemplateModel(div, model);
deliverChanges(model);
expect(div.nodes.length, 4);
model.length = 1;
deliverChanges(model);
expect(div.nodes.length, 2);
model.addAll(toSymbols([3, 4]));
deliverChanges(model);
expect(div.nodes.length, 4);
model.removeRange(1, 2);
deliverChanges(model);
expect(div.nodes.length, 3);
});
observeTest('Removal from iteration needs to unbind', () {
var div = createTestHtml(
'<template repeat="{{}}"><a>{{v}}</a></template>');
var model = toSymbols([{'v': 0}, {'v': 1}, {'v': 2}, {'v': 3}, {'v': 4}]);
recursivelySetTemplateModel(div, model);
deliverChanges(model);
var nodes = div.nodes.skip(1).toList();
var vs = model.toList();
for (var i = 0; i < 5; i++) {
expect(nodes[i].text, '$i');
}
model.length = 3;
deliverChanges(model);
for (var i = 0; i < 5; i++) {
expect(nodes[i].text, '$i');
}
vs[3][sym('v')] = 33;
vs[4][sym('v')] = 44;
deliverChanges(model);
for (var i = 0; i < 5; i++) {
expect(nodes[i].text, '$i');
}
});
observeTest('DOM Stability on Iteration', () {
var div = createTestHtml(
'<template repeat="{{}}">{{}}</template>');
var model = toSymbols([1, 2, 3, 4, 5]);
recursivelySetTemplateModel(div, model);
deliverChanges(model);
// Note: the node at index 0 is the <template>.
var nodes = div.nodes.toList();
expect(nodes.length, 6, reason: 'list has 5 items');
model.removeAt(0);
model.removeLast();
deliverChanges(model);
expect(div.nodes.length, 4, reason: 'list has 3 items');
expect(identical(div.nodes[1], nodes[2]), true, reason: '2 not removed');
expect(identical(div.nodes[2], nodes[3]), true, reason: '3 not removed');
expect(identical(div.nodes[3], nodes[4]), true, reason: '4 not removed');
model.insert(0, 5);
model[2] = 6;
model.add(7);
deliverChanges(model);
expect(div.nodes.length, 6, reason: 'list has 5 items');
expect(nodes.contains(div.nodes[1]), false, reason: '5 is a new node');
expect(identical(div.nodes[2], nodes[2]), true);
expect(nodes.contains(div.nodes[3]), false, reason: '6 is a new node');
expect(identical(div.nodes[4], nodes[4]), true);
expect(nodes.contains(div.nodes[5]), false, reason: '7 is a new node');
nodes = div.nodes.toList();
model.insert(2, 8);
deliverChanges(model);
expect(div.nodes.length, 7, reason: 'list has 6 items');
expect(identical(div.nodes[1], nodes[1]), true);
expect(identical(div.nodes[2], nodes[2]), true);
expect(nodes.contains(div.nodes[3]), false, reason: '8 is a new node');
expect(identical(div.nodes[4], nodes[3]), true);
expect(identical(div.nodes[5], nodes[4]), true);
expect(identical(div.nodes[6], nodes[5]), true);
});
observeTest('Repeat2', () {
var div = createTestHtml(
'<template repeat="{{}}">{{value}}</template>');
expect(div.nodes.length, 1);
var model = toSymbols([
{'value': 0},
{'value': 1},
{'value': 2}
]);
recursivelySetTemplateModel(div, model);
deliverChanges(model);
expect(div.nodes.length, 4);
expect(div.nodes[1].text, '0');
expect(div.nodes[2].text, '1');
expect(div.nodes[3].text, '2');
model[1][sym('value')] = 'One';
deliverChanges(model);
expect(div.nodes.length, 4);
expect(div.nodes[1].text, '0');
expect(div.nodes[2].text, 'One');
expect(div.nodes[3].text, '2');
model.replaceRange(0, 1, toSymbols([{'value': 'Zero'}]));
deliverChanges(model);
expect(div.nodes.length, 4);
expect(div.nodes[1].text, 'Zero');
expect(div.nodes[2].text, 'One');
expect(div.nodes[3].text, '2');
});
observeTest('TemplateWithInputValue', () {
var div = createTestHtml(
'<template bind="{{}}">'
'<input value="{{x}}">'
'</template>');
var model = toSymbolMap({'x': 'hi'});
recursivelySetTemplateModel(div, model);
deliverChanges(model);
expect(div.nodes.length, 2);
expect(div.nodes.last.value, 'hi');
model[sym('x')] = 'bye';
expect(div.nodes.last.value, 'hi');
deliverChanges(model);
expect(div.nodes.last.value, 'bye');
div.nodes.last.value = 'hello';
dispatchEvent('input', div.nodes.last);
expect(model[sym('x')], 'hello');
deliverChanges(model);
expect(div.nodes.last.value, 'hello');
});
//////////////////////////////////////////////////////////////////////////////
observeTest('Decorated', () {
var div = createTestHtml(
'<template bind="{{ XX }}" id="t1">'
'<p>Crew member: {{name}}, Job title: {{title}}</p>'
'</template>'
'<template bind="{{ XY }}" id="t2" ref="t1"></template>');
var model = toSymbolMap({
'XX': {'name': 'Leela', 'title': 'Captain'},
'XY': {'name': 'Fry', 'title': 'Delivery boy'},
'XZ': {'name': 'Zoidberg', 'title': 'Doctor'}
});
recursivelySetTemplateModel(div, model);
deliverChanges(model);
var t1 = document.getElementById('t1');
var instance = t1.nextElementSibling;
expect(instance.text, 'Crew member: Leela, Job title: Captain');
var t2 = document.getElementById('t2');
instance = t2.nextElementSibling;
expect(instance.text, 'Crew member: Fry, Job title: Delivery boy');
expect(div.children.length, 4);
expect(div.nodes.length, 4);
expect(div.nodes[1].tagName, 'P');
expect(div.nodes[3].tagName, 'P');
});
observeTest('DefaultStyles', () {
var t = new Element.tag('template');
TemplateElement.decorate(t);
document.body.append(t);
expect(t.getComputedStyle().display, 'none');
t.remove();
});
observeTest('Bind', () {
var div = createTestHtml('<template bind="{{}}">Hi {{ name }}</template>');
var model = toSymbolMap({'name': 'Leela'});
recursivelySetTemplateModel(div, model);
deliverChanges(model);
expect(div.nodes[1].text, 'Hi Leela');
});
observeTest('BindImperative', () {
var div = createTestHtml(
'<template>'
'Hi {{ name }}'
'</template>');
var t = div.nodes.first;
var model = toSymbolMap({'name': 'Leela'});
t.bind('bind', model, '');
deliverChanges(model);
expect(div.nodes[1].text, 'Hi Leela');
});
observeTest('BindPlaceHolderHasNewLine', () {
var div = createTestHtml('<template bind="{{}}">Hi {{\nname\n}}</template>');
var model = toSymbolMap({'name': 'Leela'});
recursivelySetTemplateModel(div, model);
deliverChanges(model);
expect(div.nodes[1].text, 'Hi Leela');
});
observeTest('BindWithRef', () {
var id = 't${new math.Random().nextDouble()}';
var div = createTestHtml(
'<template id="$id">'
'Hi {{ name }}'
'</template>'
'<template ref="$id" bind="{{}}"></template>');
var t1 = div.nodes.first;
var t2 = div.nodes[1];
expect(t2.ref, t1);
var model = toSymbolMap({'name': 'Fry'});
recursivelySetTemplateModel(div, model);
deliverChanges(model);
expect(t2.nextNode.text, 'Hi Fry');
});
observeTest('BindChanged', () {
var model = toSymbolMap({
'XX': {'name': 'Leela', 'title': 'Captain'},
'XY': {'name': 'Fry', 'title': 'Delivery boy'},
'XZ': {'name': 'Zoidberg', 'title': 'Doctor'}
});
var div = createTestHtml(
'<template bind="{{ XX }}">Hi {{ name }}</template>');
recursivelySetTemplateModel(div, model);
var t = div.nodes.first;
deliverChanges(model);
expect(div.nodes.length, 2);
expect(t.nextNode.text, 'Hi Leela');
t.bind('bind', model, 'XZ');
deliverChanges(model);
expect(div.nodes.length, 2);
expect(t.nextNode.text, 'Hi Zoidberg');
});
assertNodesAre(div, [arguments]) {
var expectedLength = arguments.length;
expect(div.nodes.length, expectedLength + 1);
for (var i = 0; i < arguments.length; i++) {
var targetNode = div.nodes[i + 1];
expect(targetNode.text, arguments[i]);
}
}
observeTest('Repeat3', () {
var div = createTestHtml(
'<template repeat="{{ contacts }}">Hi {{ name }}</template>');
var t = div.nodes.first;
var m = toSymbols({
'contacts': [
{'name': 'Raf'},
{'name': 'Arv'},
{'name': 'Neal'}
]
});
recursivelySetTemplateModel(div, m);
deliverChanges(m);
assertNodesAre(div, ['Hi Raf', 'Hi Arv', 'Hi Neal']);
m[sym('contacts')].add(toSymbols({'name': 'Alex'}));
deliverChanges(m);
assertNodesAre(div, ['Hi Raf', 'Hi Arv', 'Hi Neal', 'Hi Alex']);
m[sym('contacts')].replaceRange(0, 2,
toSymbols([{'name': 'Rafael'}, {'name': 'Erik'}]));
deliverChanges(m);
assertNodesAre(div, ['Hi Rafael', 'Hi Erik', 'Hi Neal', 'Hi Alex']);
m[sym('contacts')].removeRange(1, 3);
deliverChanges(m);
assertNodesAre(div, ['Hi Rafael', 'Hi Alex']);
m[sym('contacts')].insertAll(1,
toSymbols([{'name': 'Erik'}, {'name': 'Dimitri'}]));
deliverChanges(m);
assertNodesAre(div, ['Hi Rafael', 'Hi Erik', 'Hi Dimitri', 'Hi Alex']);
m[sym('contacts')].replaceRange(0, 1,
toSymbols([{'name': 'Tab'}, {'name': 'Neal'}]));
deliverChanges(m);
assertNodesAre(div, ['Hi Tab', 'Hi Neal', 'Hi Erik', 'Hi Dimitri', 'Hi Alex']);
m[sym('contacts')] = toSymbols([{'name': 'Alex'}]);
deliverChanges(m);
assertNodesAre(div, ['Hi Alex']);
m[sym('contacts')].length = 0;
deliverChanges(m);
assertNodesAre(div, []);
});
observeTest('RepeatModelSet', () {
var div = createTestHtml(
'<template repeat="{{ contacts }}">'
'Hi {{ name }}'
'</template>');
var m = toSymbols({
'contacts': [
{'name': 'Raf'},
{'name': 'Arv'},
{'name': 'Neal'}
]
});
recursivelySetTemplateModel(div, m);
deliverChanges(m);
var t = div.nodes.first;
assertNodesAre(div, ['Hi Raf', 'Hi Arv', 'Hi Neal']);
});
observeTest('RepeatEmptyPath', () {
var div = createTestHtml('<template repeat="{{}}">Hi {{ name }}</template>');
var t = div.nodes.first;
var m = toSymbols([
{'name': 'Raf'},
{'name': 'Arv'},
{'name': 'Neal'}
]);
recursivelySetTemplateModel(div, m);
deliverChanges(m);
assertNodesAre(div, ['Hi Raf', 'Hi Arv', 'Hi Neal']);
m.add(toSymbols({'name': 'Alex'}));
deliverChanges(m);
assertNodesAre(div, ['Hi Raf', 'Hi Arv', 'Hi Neal', 'Hi Alex']);
m.replaceRange(0, 2, toSymbols([{'name': 'Rafael'}, {'name': 'Erik'}]));
deliverChanges(m);
assertNodesAre(div, ['Hi Rafael', 'Hi Erik', 'Hi Neal', 'Hi Alex']);
m.removeRange(1, 3);
deliverChanges(m);
assertNodesAre(div, ['Hi Rafael', 'Hi Alex']);
m.insertAll(1, toSymbols([{'name': 'Erik'}, {'name': 'Dimitri'}]));
deliverChanges(m);
assertNodesAre(div, ['Hi Rafael', 'Hi Erik', 'Hi Dimitri', 'Hi Alex']);
m.replaceRange(0, 1, toSymbols([{'name': 'Tab'}, {'name': 'Neal'}]));
deliverChanges(m);
assertNodesAre(div, ['Hi Tab', 'Hi Neal', 'Hi Erik', 'Hi Dimitri', 'Hi Alex']);
m.length = 0;
m.add(toSymbols({'name': 'Alex'}));
deliverChanges(m);
assertNodesAre(div, ['Hi Alex']);
});
observeTest('RepeatNullModel', () {
var div = createTestHtml('<template repeat="{{}}">Hi {{ name }}</template>');
var t = div.nodes.first;
var m = null;
recursivelySetTemplateModel(div, m);
expect(div.nodes.length, 1);
t.attributes['iterate'] = '';
m = toSymbols({});
recursivelySetTemplateModel(div, m);
deliverChanges(m);
expect(div.nodes.length, 1);
});
observeTest('RepeatReuse', () {
var div = createTestHtml('<template repeat="{{}}">Hi {{ name }}</template>');
var t = div.nodes.first;
var m = toSymbols([
{'name': 'Raf'},
{'name': 'Arv'},
{'name': 'Neal'}
]);
recursivelySetTemplateModel(div, m);
deliverChanges(m);
assertNodesAre(div, ['Hi Raf', 'Hi Arv', 'Hi Neal']);
var node1 = div.nodes[1];
var node2 = div.nodes[2];
var node3 = div.nodes[3];
m.replaceRange(1, 2, toSymbols([{'name': 'Erik'}]));
deliverChanges(m);
assertNodesAre(div, ['Hi Raf', 'Hi Erik', 'Hi Neal']);
expect(div.nodes[1], node1,
reason: 'model[0] did not change so the node should not have changed');
expect(div.nodes[2], isNot(equals(node2)),
reason: 'Should not reuse when replacing');
expect(div.nodes[3], node3,
reason: 'model[2] did not change so the node should not have changed');
node2 = div.nodes[2];
m.insert(0, toSymbols({'name': 'Alex'}));
deliverChanges(m);
assertNodesAre(div, ['Hi Alex', 'Hi Raf', 'Hi Erik', 'Hi Neal']);
});
observeTest('TwoLevelsDeepBug', () {
var div = createTestHtml(
'<template bind="{{}}"><span><span>{{ foo }}</span></span></template>');
var model = toSymbolMap({'foo': 'bar'});
recursivelySetTemplateModel(div, model);
deliverChanges(model);
expect(div.nodes[1].nodes[0].nodes[0].text, 'bar');
});
observeTest('Checked', () {
var div = createTestHtml(
'<template>'
'<input type="checkbox" checked="{{a}}">'
'</template>');
var t = div.nodes.first;
var m = toSymbols({
'a': true
});
t.bind('bind', m, '');
deliverChanges(m);
var instanceInput = t.nextNode;
expect(instanceInput.checked, true);
instanceInput.click();
expect(instanceInput.checked, false);
instanceInput.click();
expect(instanceInput.checked, true);
});
nestedHelper(s, start) {
var div = createTestHtml(s);
var m = toSymbols({
'a': {
'b': 1,
'c': {'d': 2}
},
});
recursivelySetTemplateModel(div, m);
deliverChanges(m);
var i = start;
expect(div.nodes[i++].text, '1');
expect(div.nodes[i++].tagName, 'TEMPLATE');
expect(div.nodes[i++].text, '2');
m[sym('a')][sym('b')] = 11;
deliverChanges(m);
expect(div.nodes[start].text, '11');
m[sym('a')][sym('c')] = toSymbols({'d': 22});
deliverChanges(m);
expect(div.nodes[start + 2].text, '22');
}
observeTest('Nested', () {
nestedHelper(
'<template bind="{{a}}">'
'{{b}}'
'<template bind="{{c}}">'
'{{d}}'
'</template>'
'</template>', 1);
});
observeTest('NestedWithRef', () {
nestedHelper(
'<template id="inner">{{d}}</template>'
'<template id="outer" bind="{{a}}">'
'{{b}}'
'<template ref="inner" bind="{{c}}"></template>'
'</template>', 2);
});
nestedIterateInstantiateHelper(s, start) {
var div = createTestHtml(s);
var m = toSymbols({
'a': [
{
'b': 1,
'c': {'d': 11}
},
{
'b': 2,
'c': {'d': 22}
}
]
});
recursivelySetTemplateModel(div, m);
deliverChanges(m);
var i = start;
expect(div.nodes[i++].text, '1');
expect(div.nodes[i++].tagName, 'TEMPLATE');
expect(div.nodes[i++].text, '11');
expect(div.nodes[i++].text, '2');
expect(div.nodes[i++].tagName, 'TEMPLATE');
expect(div.nodes[i++].text, '22');
m[sym('a')][1] = toSymbols({
'b': 3,
'c': {'d': 33}
});
deliverChanges(m);
expect(div.nodes[start + 3].text, '3');
expect(div.nodes[start + 5].text, '33');
}
observeTest('NestedRepeatBind', () {
nestedIterateInstantiateHelper(
'<template repeat="{{a}}">'
'{{b}}'
'<template bind="{{c}}">'
'{{d}}'
'</template>'
'</template>', 1);
});
observeTest('NestedRepeatBindWithRef', () {
nestedIterateInstantiateHelper(
'<template id="inner">'
'{{d}}'
'</template>'
'<template repeat="{{a}}">'
'{{b}}'
'<template ref="inner" bind="{{c}}"></template>'
'</template>', 2);
});
nestedIterateIterateHelper(s, start) {
var div = createTestHtml(s);
var m = toSymbols({
'a': [
{
'b': 1,
'c': [{'d': 11}, {'d': 12}]
},
{
'b': 2,
'c': [{'d': 21}, {'d': 22}]
}
]
});
recursivelySetTemplateModel(div, m);
deliverChanges(m);
var i = start;
expect(div.nodes[i++].text, '1');
expect(div.nodes[i++].tagName, 'TEMPLATE');
expect(div.nodes[i++].text, '11');
expect(div.nodes[i++].text, '12');
expect(div.nodes[i++].text, '2');
expect(div.nodes[i++].tagName, 'TEMPLATE');
expect(div.nodes[i++].text, '21');
expect(div.nodes[i++].text, '22');
m[sym('a')][1] = toSymbols({
'b': 3,
'c': [{'d': 31}, {'d': 32}, {'d': 33}]
});
i = start + 4;
deliverChanges(m);
expect(div.nodes[start + 4].text, '3');
expect(div.nodes[start + 6].text, '31');
expect(div.nodes[start + 7].text, '32');
expect(div.nodes[start + 8].text, '33');
}
observeTest('NestedRepeatBind', () {
nestedIterateIterateHelper(
'<template repeat="{{a}}">'
'{{b}}'
'<template repeat="{{c}}">'
'{{d}}'
'</template>'
'</template>', 1);
});
observeTest('NestedRepeatRepeatWithRef', () {
nestedIterateIterateHelper(
'<template id="inner">'
'{{d}}'
'</template>'
'<template repeat="{{a}}">'
'{{b}}'
'<template ref="inner" repeat="{{c}}"></template>'
'</template>', 2);
});
observeTest('NestedRepeatSelfRef', () {
var div = createTestHtml(
'<template id="t" repeat="{{}}">'
'{{name}}'
'<template ref="t" repeat="{{items}}"></template>'
'</template>');
var m = toSymbols([
{
'name': 'Item 1',
'items': [
{
'name': 'Item 1.1',
'items': [
{
'name': 'Item 1.1.1',
'items': []
}
]
},
{
'name': 'Item 1.2'
}
]
},
{
'name': 'Item 2',
'items': []
},
]);
recursivelySetTemplateModel(div, m);
deliverChanges(m);
var i = 1;
expect(div.nodes[i++].text, 'Item 1');
expect(div.nodes[i++].tagName, 'TEMPLATE');
expect(div.nodes[i++].text, 'Item 1.1');
expect(div.nodes[i++].tagName, 'TEMPLATE');
expect(div.nodes[i++].text, 'Item 1.1.1');
expect(div.nodes[i++].tagName, 'TEMPLATE');
expect(div.nodes[i++].text, 'Item 1.2');
expect(div.nodes[i++].tagName, 'TEMPLATE');
expect(div.nodes[i++].text, 'Item 2');
m[0] = toSymbols({'name': 'Item 1 changed'});
i = 1;
deliverChanges(m);
expect(div.nodes[i++].text, 'Item 1 changed');
expect(div.nodes[i++].tagName, 'TEMPLATE');
expect(div.nodes[i++].text, 'Item 2');
});
observeTest('Attribute Template Option/Optgroup', () {
var div = createTestHtml(
'<template bind>'
'<select selectedIndex="{{ selected }}">'
'<optgroup template repeat="{{ groups }}" label="{{ name }}">'
'<option template repeat="{{ items }}">{{ val }}</option>'
'</optgroup>'
'</select>'
'</template>');
var m = toSymbols({
'selected': 1,
'groups': [{
'name': 'one', 'items': [{ 'val': 0 }, { 'val': 1 }]
}],
});
recursivelySetTemplateModel(div, m);
deliverChanges(m);
var select = div.nodes[0].nextNode;
expect(select.nodes.length, 2);
runAsync(expectAsync0(() {
runAsync(expectAsync0(() {
// TODO(jmesserly): this should be called sooner.
expect(select.selectedIndex, 1);
}));
}));
expect(select.nodes[0].tagName, 'TEMPLATE');
expect(select.nodes[0].ref.content.nodes[0].tagName, 'OPTGROUP');
var optgroup = select.nodes[1];
expect(optgroup.nodes[0].tagName, 'TEMPLATE');
expect(optgroup.nodes[1].tagName, 'OPTION');
expect(optgroup.nodes[1].text, '0');
expect(optgroup.nodes[2].tagName, 'OPTION');
expect(optgroup.nodes[2].text, '1');
});
observeTest('NestedIterateTableMixedSemanticNative', () {
if (!parserHasNativeTemplate) return;
var div = createTestHtml(
'<table><tbody>'
'<template repeat="{{}}">'
'<tr>'
'<td template repeat="{{}}" class="{{ val }}">{{ val }}</td>'
'</tr>'
'</template>'
'</tbody></table>');
var m = toSymbols([
[{ 'val': 0 }, { 'val': 1 }],
[{ 'val': 2 }, { 'val': 3 }]
]);
recursivelySetTemplateModel(div, m);
deliverChanges(m);
var tbody = div.nodes[0].nodes[0];
// 1 for the <tr template>, 2 * (1 tr)
expect(tbody.nodes.length, 3);
// 1 for the <td template>, 2 * (1 td)
expect(tbody.nodes[1].nodes.length, 3);
expect(tbody.nodes[1].nodes[1].text, '0');
expect(tbody.nodes[1].nodes[2].text, '1');
// 1 for the <td template>, 2 * (1 td)
expect(tbody.nodes[2].nodes.length, 3);
expect(tbody.nodes[2].nodes[1].text, '2');
expect(tbody.nodes[2].nodes[2].text, '3');
// Asset the 'class' binding is retained on the semantic template (just
// check the last one).
expect(tbody.nodes[2].nodes[2].attributes["class"], '3');
});
observeTest('NestedIterateTable', () {
var div = createTestHtml(
'<table><tbody>'
'<tr template repeat="{{}}">'
'<td template repeat="{{}}" class="{{ val }}">{{ val }}</td>'
'</tr>'
'</tbody></table>');
var m = toSymbols([
[{ 'val': 0 }, { 'val': 1 }],
[{ 'val': 2 }, { 'val': 3 }]
]);
recursivelySetTemplateModel(div, m);
deliverChanges(m);
var i = 1;
var tbody = div.nodes[0].nodes[0];
// 1 for the <tr template>, 2 * (1 tr)
expect(tbody.nodes.length, 3);
// 1 for the <td template>, 2 * (1 td)
expect(tbody.nodes[1].nodes.length, 3);
expect(tbody.nodes[1].nodes[1].text, '0');
expect(tbody.nodes[1].nodes[2].text, '1');
// 1 for the <td template>, 2 * (1 td)
expect(tbody.nodes[2].nodes.length, 3);
expect(tbody.nodes[2].nodes[1].text, '2');
expect(tbody.nodes[2].nodes[2].text, '3');
// Asset the 'class' binding is retained on the semantic template (just check
// the last one).
expect(tbody.nodes[2].nodes[2].attributes['class'], '3');
});
observeTest('NestedRepeatDeletionOfMultipleSubTemplates', () {
var div = createTestHtml(
'<ul>'
'<template repeat="{{}}" id=t1>'
'<li>{{name}}'
'<ul>'
'<template ref=t1 repaet="{{items}}"></template>'
'</ul>'
'</li>'
'</template>'
'</ul>');
var m = toSymbols([
{
'name': 'Item 1',
'items': [
{
'name': 'Item 1.1'
}
]
}
]);
recursivelySetTemplateModel(div, m);
deliverChanges(m);
m.removeAt(0);
deliverChanges(m);
});
observeTest('DeepNested', () {
var div = createTestHtml(
'<template bind="{{a}}">'
'<p>'
'<template bind="{{b}}">'
'{{ c }}'
'</template>'
'</p>'
'</template>');
var m = toSymbols({
'a': {
'b': {
'c': 42
}
}
});
recursivelySetTemplateModel(div, m);
deliverChanges(m);
expect(div.nodes[1].tagName, 'P');
expect(div.nodes[1].nodes.first.tagName, 'TEMPLATE');
expect(div.nodes[1].nodes[1].text, '42');
});
observeTest('TemplateContentRemoved', () {
var div = createTestHtml('<template bind="{{}}">{{ }}</template>');
var model = 42;
recursivelySetTemplateModel(div, model);
deliverChanges(model);
expect(div.nodes[1].text, '42');
expect(div.nodes[0].text, '');
});
observeTest('TemplateContentRemovedEmptyArray', () {
var div = createTestHtml('<template iterate>Remove me</template>');
var model = toSymbols([]);
recursivelySetTemplateModel(div, model);
deliverChanges(model);
expect(div.nodes.length, 1);
expect(div.nodes[0].text, '');
});
observeTest('TemplateContentRemovedNested', () {
var div = createTestHtml(
'<template bind="{{}}">'
'{{ a }}'
'<template bind="{{}}">'
'{{ b }}'
'</template>'
'</template>');
var model = toSymbolMap({
'a': 1,
'b': 2
});
recursivelySetTemplateModel(div, model);
deliverChanges(model);
expect(div.nodes[0].text, '');
expect(div.nodes[1].text, '1');
expect(div.nodes[2].text, '');
expect(div.nodes[3].text, '2');
});
observeTest('BindWithUndefinedModel', () {
var div = createTestHtml(
'<template bind="{{}}" if="{{}}">{{ a }}</template>');
var model = toSymbolMap({'a': 42});
recursivelySetTemplateModel(div, model);
deliverChanges(model);
expect(div.nodes[1].text, '42');
model = null;
recursivelySetTemplateModel(div, model);
deliverChanges(model);
expect(div.nodes.length, 1);
model = toSymbols({'a': 42});
recursivelySetTemplateModel(div, model);
deliverChanges(model);
expect(div.nodes[1].text, '42');
});
observeTest('BindNested', () {
var div = createTestHtml(
'<template bind="{{}}">'
'Name: {{ name }}'
'<template bind="{{wife}}" if="{{wife}}">'
'Wife: {{ name }}'
'</template>'
'<template bind="{{child}}" if="{{child}}">'
'Child: {{ name }}'
'</template>'
'</template>');
var m = toSymbols({
'name': 'Hermes',
'wife': {
'name': 'LaBarbara'
}
});
recursivelySetTemplateModel(div, m);
deliverChanges(m);
expect(div.nodes.length, 5);
expect(div.nodes[1].text, 'Name: Hermes');
expect(div.nodes[3].text, 'Wife: LaBarbara');
m[sym('child')] = toSymbols({'name': 'Dwight'});
deliverChanges(m);
expect(div.nodes.length, 6);
expect(div.nodes[5].text, 'Child: Dwight');
m.remove(sym('wife'));
deliverChanges(m);
expect(div.nodes.length, 5);
expect(div.nodes[4].text, 'Child: Dwight');
});
observeTest('BindRecursive', () {
var div = createTestHtml(
'<template bind="{{}}" if="{{}}" id="t">'
'Name: {{ name }}'
'<template bind="{{friend}}" if="{{friend}}" ref="t"></template>'
'</template>');
var m = toSymbols({
'name': 'Fry',
'friend': {
'name': 'Bender'
}
});
recursivelySetTemplateModel(div, m);
deliverChanges(m);
expect(div.nodes.length, 5);
expect(div.nodes[1].text, 'Name: Fry');
expect(div.nodes[3].text, 'Name: Bender');
m[sym('friend')][sym('friend')] = toSymbols({'name': 'Leela'});
deliverChanges(m);
expect(div.nodes.length, 7);
expect(div.nodes[5].text, 'Name: Leela');
m[sym('friend')] = toSymbols({'name': 'Leela'});
deliverChanges(m);
expect(div.nodes.length, 5);
expect(div.nodes[3].text, 'Name: Leela');
});
observeTest('Template - Self is terminator', () {
var div = createTestHtml(
'<template repeat>{{ foo }}'
'<template bind></template>'
'</template>');
var m = toSymbols([{ 'foo': 'bar' }]);
recursivelySetTemplateModel(div, m);
performMicrotaskCheckpoint();
m.add(toSymbols({ 'foo': 'baz' }));
recursivelySetTemplateModel(div, m);
performMicrotaskCheckpoint();
expect(div.nodes.length, 5);
expect(div.nodes[1].text, 'bar');
expect(div.nodes[3].text, 'baz');
});
observeTest('Template - Same Contents, Different Array has no effect', () {
if (!MutationObserver.supported) return;
var div = createTestHtml('<template repeat>{{ foo }}</template>');
var m = toSymbols([{ 'foo': 'bar' }, { 'foo': 'bat'}]);
recursivelySetTemplateModel(div, m);
performMicrotaskCheckpoint();
var observer = new MutationObserver((records, _) {});
observer.observe(div, childList: true);
var template = div.firstChild;
template.bind('repeat', toObservable(m.toList()), '');
performMicrotaskCheckpoint();
var records = observer.takeRecords();
expect(records.length, 0);
});
observeTest('RecursiveRef', () {
var div = createTestHtml(
'<template bind>'
'<template id=src>{{ foo }}</template>'
'<template bind ref=src></template>'
'</template>');
var m = toSymbols({'foo': 'bar'});
recursivelySetTemplateModel(div, m);
performMicrotaskCheckpoint();
expect(div.nodes.length, 4);
expect(div.nodes[3].text, 'bar');
});
observeTest('ChangeFromBindToRepeat', () {
var div = createTestHtml(
'<template bind="{{a}}">'
'{{ length }}'
'</template>');
var template = div.nodes.first;
// Note: this test data is a little different from the JS version, because
// we allow binding to the "length" field of the Map in preference to
// binding keys.
var m = toSymbols({
'a': [
[],
{ 'b': [1,2,3,4] },
// Note: this will use the Map "length" property, not the "length" key.
{'length': 42, 'c': 123}
]
});
recursivelySetTemplateModel(div, m);
deliverChanges(m);
expect(div.nodes.length, 2);
expect(div.nodes[1].text, '3');
template.unbind('bind');
template.bind('repeat', m, 'a');
deliverChanges(m);
expect(div.nodes.length, 4);
expect(div.nodes[1].text, '0');
expect(div.nodes[2].text, '1');
expect(div.nodes[3].text, '2');
template.unbind('repeat');
template.bind('bind', m, 'a.1.b');
deliverChanges(m);
expect(div.nodes.length, 2);
expect(div.nodes[1].text, '4');
});
observeTest('ChangeRefId', () {
var div = createTestHtml(
'<template id="a">a:{{ }}</template>'
'<template id="b">b:{{ }}</template>'
'<template repeat="{{}}">'
'<template ref="a" bind="{{}}"></template>'
'</template>');
var model = toSymbols([]);
recursivelySetTemplateModel(div, model);
deliverChanges(model);
expect(div.nodes.length, 3);
document.getElementById('a').id = 'old-a';
document.getElementById('b').id = 'a';
model..add(1)..add(2);
deliverChanges(model);
expect(div.nodes.length, 7);
expect(div.nodes[4].text, 'b:1');
expect(div.nodes[6].text, 'b:2');
});
observeTest('Content', () {
var div = createTestHtml(
'<template><a></a></template>'
'<template><b></b></template>');
var templateA = div.nodes.first;
var templateB = div.nodes.last;
var contentA = templateA.content;
var contentB = templateB.content;
expect(contentA, isNotNull);
expect(templateA.document, isNot(equals(contentA.document)));
expect(templateB.document, isNot(equals(contentB.document)));
expect(templateB.document, templateA.document);
expect(contentB.document, contentA.document);
expect(templateA.document.window, window);
expect(templateB.document.window, window);
expect(contentA.document.window, null);
expect(contentB.document.window, null);
expect(contentA.nodes.last, contentA.nodes.first);
expect(contentA.nodes.first.tagName, 'A');
expect(contentB.nodes.last, contentB.nodes.first);
expect(contentB.nodes.first.tagName, 'B');
});
observeTest('NestedContent', () {
var div = createTestHtml(
'<template>'
'<template></template>'
'</template>');
var templateA = div.nodes.first;
var templateB = templateA.content.nodes.first;
expect(templateB.document, templateA.content.document);
expect(templateB.content.document, templateA.content.document);
});
observeTest('BindShadowDOM', () {
if (ShadowRoot.supported) {
var root = createShadowTestHtml(
'<template bind="{{}}">Hi {{ name }}</template>');
var model = toSymbolMap({'name': 'Leela'});
recursivelySetTemplateModel(root, model);
deliverChanges(model);
expect(root.nodes[1].text, 'Hi Leela');
}
});
observeTest('BindShadowDOM createInstance', () {
if (ShadowRoot.supported) {
var model = toSymbolMap({'name': 'Leela'});
var template = new Element.html('<template>Hi {{ name }}</template>');
var root = createShadowTestHtml('');
root.nodes.add(template.createInstance(model));
performMicrotaskCheckpoint();
expect(root.text, 'Hi Leela');
model[sym('name')] = 'Fry';
performMicrotaskCheckpoint();
expect(root.text, 'Hi Fry');
}
});
observeTest('BindShadowDOM Template Ref', () {
if (ShadowRoot.supported) {
var root = createShadowTestHtml(
'<template id=foo>Hi</template><template bind ref=foo></template>');
recursivelySetTemplateModel(root, toSymbolMap({}));
performMicrotaskCheckpoint();
expect(root.nodes.length, 3);
}
});
// https://github.com/toolkitchen/mdv/issues/8
observeTest('UnbindingInNestedBind', () {
var div = createTestHtml(
'<template bind="{{outer}}" if="{{outer}}" syntax="testHelper">'
'<template bind="{{inner}}" if="{{inner}}">'
'{{ age }}'
'</template>'
'</template>');
var syntax = new UnbindingInNestedBindSyntax();
var model = toSymbolMap({
'outer': {
'inner': {
'age': 42
}
}
});
recursivelySetTemplateModel(div, model, syntax);
deliverChanges(model);
expect(syntax.count, 1);
var inner = model[sym('outer')][sym('inner')];
model[sym('outer')] = null;
deliverChanges(model);
expect(syntax.count, 1);
model[sym('outer')] = toSymbols({'inner': {'age': 2}});
syntax.expectedAge = 2;
deliverChanges(model);
expect(syntax.count, 2);
});
// https://github.com/toolkitchen/mdv/issues/8
observeTest('DontCreateInstancesForAbandonedIterators', () {
var div = createTestHtml(
'<template bind="{{}} {{}}">'
'<template bind="{{}}">Foo'
'</template>'
'</template>');
recursivelySetTemplateModel(div, null);
performMicrotaskCheckpoint();
});
observeTest('CreateInstance', () {
var div = createTestHtml(
'<template bind="{{a}}">'
'<template bind="{{b}}">'
'{{ foo }}:{{ replaceme }}'
'</template>'
'</template>');
var outer = div.nodes.first;
var model = toSymbolMap({'b': {'foo': 'bar'}});
var host = new DivElement();
var instance = outer.createInstance(model, new TestBindingSyntax());
expect(outer.content.nodes.first, instance.nodes.first.ref);
host.append(instance);
performMicrotaskCheckpoint();
expect(host.firstChild.nextNode.text, 'bar:replaced');
});
observeTest('Bootstrap', () {
var div = new DivElement();
div.innerHtml =
'<template>'
'<div></div>'
'<template>'
'Hello'
'</template>'
'</template>';
TemplateElement.bootstrap(div);
var template = div.nodes.first;
expect(template.content.nodes.length, 2);
var template2 = template.content.nodes.first.nextNode;
expect(template2.content.nodes.length, 1);
expect(template2.content.nodes.first.text, 'Hello');
template = new Element.tag('template');
template.innerHtml =
'<template>'
'<div></div>'
'<template>'
'Hello'
'</template>'
'</template>';
TemplateElement.bootstrap(template);
template2 = template.content.nodes.first;
expect(template2.content.nodes.length, 2);
var template3 = template2.content.nodes.first.nextNode;
expect(template3.content.nodes.length, 1);
expect(template3.content.nodes.first.text, 'Hello');
});
observeTest('instanceCreated hack', () {
var called = false;
var sub = mdv.instanceCreated.listen((node) {
called = true;
expect(node.nodeType, Node.DOCUMENT_FRAGMENT_NODE);
});
var div = createTestHtml('<template bind="{{}}">Foo</template>');
expect(called, false);
recursivelySetTemplateModel(div, null);
performMicrotaskCheckpoint();
expect(called, true);
sub.cancel();
});
}
class TestBindingSyntax extends BindingDelegate {
getBinding(model, String path, name, node) {
if (path.trim() == 'replaceme') return new ObservableBox('replaced');
return null;
}
}
class UnbindingInNestedBindSyntax extends BindingDelegate {
int expectedAge = 42;
int count = 0;
getBinding(model, path, name, node) {
if (name != 'text' || path != 'age')
return;
expect(model[sym('age')], expectedAge);
count++;
}
}
/**
* Verifies that the model is Observable, then calls
* [performMicrotaskCheckpoint].
*/
void deliverChanges(model) {
expectObservable(model);
performMicrotaskCheckpoint();
}
void expectObservable(model) {
if (model is! Observable) {
// This is here to eagerly catch a bug in the test; it means the test
// forgot a toSymbols somewhere.
expect(identical(toSymbols(model), model), true,
reason: 'model type "${model.runtimeType}" should be observable');
return;
}
if (model is ObservableList) {
for (var item in model) {
expectObservable(item);
}
} else if (model is ObservableMap) {
model.forEach((k, v) {
expectObservable(k);
expectObservable(v);
});
}
}
toSymbols(obj) => toObservable(_deepToSymbol(obj));
sym(x) => new Symbol(x);
_deepToSymbol(value) {
if (value is Map) {
var result = new LinkedHashMap();
value.forEach((k, v) {
k = k is String ? sym(k) : _deepToSymbol(k);
result[k] = _deepToSymbol(v);
});
return result;
}
if (value is Iterable) {
return value.map(_deepToSymbol).toList();
}
return value;
}