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feat(change_detection): added an experimental support for observables

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This commit is contained in:
vsavkin
2015-08-17 15:28:37 -07:00
committed by Victor Savkin
parent ed81cb94b0
commit cbfc9cb344
18 changed files with 243 additions and 44 deletions
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75
modules/angular2/test/change_detection/change_detector_spec.ts
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@ -1,5 +1,16 @@
///<reference path="../../src/change_detection/pipe_transform.ts"/>
import {ddescribe, describe, it, iit, xit, expect, beforeEach, afterEach} from 'angular2/test_lib';
import {
ddescribe,
describe,
it,
iit,
xit,
expect,
beforeEach,
afterEach,
tick,
fakeAsync
} from 'angular2/test_lib';
import {
CONST_EXPR,
@ -40,6 +51,7 @@ import {Pipes} from 'angular2/src/change_detection/pipes';
import {JitProtoChangeDetector} from 'angular2/src/change_detection/jit_proto_change_detector';
import {getDefinition} from './change_detector_config';
import {createObservableModel} from './change_detector_spec_util';
import {getFactoryById} from './generated/change_detector_classes';
import {IS_DART} from '../platform';
@ -735,6 +747,67 @@ export function main() {
expect(checkedDetector.mode).toEqual(CHECK_ONCE);
});
if (IS_DART) {
it('should mark ON_PUSH_OBSERVE detectors as CHECK_ONCE when an observable fires an event',
fakeAsync(() => {
var context = new TestDirective();
context.a = createObservableModel();
var cd = _createWithoutHydrate('onPushObserve').changeDetector;
cd.hydrate(context, null, directives, null);
cd.detectChanges();
expect(cd.mode).toEqual(CHECKED);
context.a.pushUpdate();
tick();
expect(cd.mode).toEqual(CHECK_ONCE);
}));
it('should unsubscribe from an old observable when an object changes', fakeAsync(() => {
var originalModel = createObservableModel();
var context = new TestDirective();
context.a = originalModel;
var cd = _createWithoutHydrate('onPushObserve').changeDetector;
cd.hydrate(context, null, directives, null);
cd.detectChanges();
context.a = createObservableModel();
cd.mode = CHECK_ONCE;
cd.detectChanges();
// Updating this model will not reenable the detector. This model is not longer
// used.
originalModel.pushUpdate();
tick();
expect(cd.mode).toEqual(CHECKED);
}));
it('should unsubscribe from observables when dehydrating', fakeAsync(() => {
var originalModel = createObservableModel();
var context = new TestDirective();
context.a = originalModel;
var cd = _createWithoutHydrate('onPushObserve').changeDetector;
cd.hydrate(context, null, directives, null);
cd.detectChanges();
cd.dehydrate();
context.a = "not an observable model";
cd.hydrate(context, null, directives, null);
cd.detectChanges();
// Updating this model will not reenable the detector. This model is not longer
// used.
originalModel.pushUpdate();
tick();
expect(cd.mode).toEqual(CHECKED);
}));
}
});
});