angular-cn/modules/angular2/src/test_lib/test_lib.dart

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library test_lib.test_lib;
import 'package:guinness/guinness.dart' as gns;
export 'package:guinness/guinness.dart' hide Expect, expect, NotExpect, beforeEach, it, iit, xit;
import 'package:unittest/unittest.dart' hide expect;
import 'dart:async';
import 'package:angular2/src/dom/dom_adapter.dart' show DOM;
import 'package:angular2/src/reflection/reflection.dart';
import 'package:angular2/src/reflection/reflection_capabilities.dart';
import 'package:angular2/src/di/binding.dart' show bind;
import 'package:angular2/src/di/injector.dart' show Injector;
import './test_injector.dart';
export './test_injector.dart' show inject;
bool IS_DARTIUM = true;
bool IS_NODEJS = false;
List _testBindings = [];
Injector _injector;
bool _isCurrentTestAsync;
bool _inIt = false;
class AsyncTestCompleter {
Completer _completer;
AsyncTestCompleter() {
_completer = new Completer();
}
done() {
_completer.complete();
}
get future => _completer.future;
}
testSetup() {
reflector.reflectionCapabilities = new ReflectionCapabilities();
// beforeEach configuration:
// - Priority 3: clear the bindings before each test,
// - Priority 2: collect the bindings before each test, see beforeEachBindings(),
// - Priority 1: create the test injector to be used in beforeEach() and it()
gns.beforeEach(
() {
_testBindings.clear();
},
priority: 3
);
var completerBinding = bind(AsyncTestCompleter).toFactory(() {
// Mark the test as async when an AsyncTestCompleter is injected in an it(),
if (!_inIt) throw 'AsyncTestCompleter can only be injected in an "it()"';
_isCurrentTestAsync = true;
return new AsyncTestCompleter();
});
gns.beforeEach(
() {
_isCurrentTestAsync = false;
_testBindings.add(completerBinding);
_injector = createTestInjector(_testBindings);
},
priority: 1
);
}
Expect expect(actual, [matcher]) {
final expect = new Expect(actual);
if (matcher != null) expect.to(matcher);
return expect;
}
class Expect extends gns.Expect {
Expect(actual) : super(actual);
NotExpect get not => new NotExpect(actual);
void toEqual(expected) => toHaveSameProps(expected);
void toThrowError([message=""]) => toThrowWith(message: message);
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void toBePromise() => _expect(actual is Future, equals(true));
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void toImplement(expected) => toBeA(expected);
void toBeNaN() => _expect(double.NAN.compareTo(actual) == 0, equals(true));
void toHaveText(expected) => _expect(elementText(actual), expected);
Function get _expect => gns.guinness.matchers.expect;
}
class NotExpect extends gns.NotExpect {
NotExpect(actual) : super(actual);
void toEqual(expected) => toHaveSameProps(expected);
void toBePromise() => _expect(actual is Future, equals(false));
Function get _expect => gns.guinness.matchers.expect;
}
beforeEach(fn) {
if (fn is! FunctionWithParamTokens) fn = new FunctionWithParamTokens([], fn);
gns.beforeEach(() {
fn.execute(_injector);
});
}
/**
* Allows overriding default bindings defined in test_injector.js.
*
* The given function must return a list of DI bindings.
*
* Example:
*
* beforeEachBindings(() => [
* bind(Compiler).toClass(MockCompiler),
* bind(SomeToken).toValue(myValue),
* ]);
*/
beforeEachBindings(fn) {
gns.beforeEach(
() {
var bindings = fn();
if (bindings != null) _testBindings.addAll(bindings);
},
priority: 2
);
}
_it(gnsFn, name, fn) {
if (fn is! FunctionWithParamTokens) fn = new FunctionWithParamTokens([], fn);
gnsFn(name, () {
_inIt = true;
fn.execute(_injector);
_inIt = false;
if (_isCurrentTestAsync) return _injector.get(AsyncTestCompleter).future;
});
}
it(name, fn) {
_it(gns.it, name, fn);
}
iit(name, fn) {
_it(gns.iit, name, fn);
}
xit(name, fn) {
_it(gns.xit, name, fn);
}
String elementText(n) {
hasNodes(n) {
var children = DOM.childNodes(n);
return children != null && children.length > 0;
}
if (n is Iterable) {
return n.map((nn) => elementText(nn)).join("");
}
if (DOM.isCommentNode(n)) {
return '';
}
if (DOM.isElementNode(n) && DOM.tagName(n) == 'CONTENT') {
return elementText(n.getDistributedNodes());
}
if (DOM.hasShadowRoot(n)) {
return elementText(DOM.childNodesAsList(n.shadowRoot));
}
if (hasNodes(n)) {
return elementText(DOM.childNodesAsList(n));
}
return DOM.getText(n);
}