@reactivex/rxjs
Version:
Reactive Extensions for modern JavaScript
101 lines • 3.95 kB
JavaScript
;
var chai_1 = require('chai');
var sinon = require('sinon');
var Rx = require('../../dist/cjs/Rx');
var animationFrame = Rx.Scheduler.animationFrame;
/** @test {Scheduler} */
describe('Scheduler.animationFrame', function () {
it('should exist', function () {
chai_1.expect(animationFrame).exist;
});
it('should act like the async scheduler if delay > 0', function () {
var actionHappened = false;
var sandbox = sinon.sandbox.create();
var fakeTimer = sandbox.useFakeTimers();
animationFrame.schedule(function () {
actionHappened = true;
}, 50);
chai_1.expect(actionHappened).to.be.false;
fakeTimer.tick(25);
chai_1.expect(actionHappened).to.be.false;
fakeTimer.tick(25);
chai_1.expect(actionHappened).to.be.true;
sandbox.restore();
});
it('should schedule an action to happen later', function (done) {
var actionHappened = false;
animationFrame.schedule(function () {
actionHappened = true;
done();
});
if (actionHappened) {
done(new Error('Scheduled action happened synchronously'));
}
});
it('should execute recursively scheduled actions in separate asynchronous contexts', function (done) {
var syncExec1 = true;
var syncExec2 = true;
animationFrame.schedule(function (index) {
if (index === 0) {
this.schedule(1);
animationFrame.schedule(function () { syncExec1 = false; });
}
else if (index === 1) {
this.schedule(2);
animationFrame.schedule(function () { syncExec2 = false; });
}
else if (index === 2) {
this.schedule(3);
}
else if (index === 3) {
if (!syncExec1 && !syncExec2) {
done();
}
else {
done(new Error('Execution happened synchronously.'));
}
}
}, 0, 0);
});
it('should cancel the animation frame if all scheduled actions unsubscribe before it executes', function (done) {
var animationFrameExec1 = false;
var animationFrameExec2 = false;
var action1 = animationFrame.schedule(function () { animationFrameExec1 = true; });
var action2 = animationFrame.schedule(function () { animationFrameExec2 = true; });
chai_1.expect(animationFrame.scheduled).to.exist;
chai_1.expect(animationFrame.actions.length).to.equal(2);
action1.unsubscribe();
action2.unsubscribe();
chai_1.expect(animationFrame.actions.length).to.equal(0);
chai_1.expect(animationFrame.scheduled).to.equal(undefined);
animationFrame.schedule(function () {
chai_1.expect(animationFrameExec1).to.equal(false);
chai_1.expect(animationFrameExec2).to.equal(false);
done();
});
});
it('should execute the rest of the scheduled actions if the first action is canceled', function (done) {
var actionHappened = false;
var firstSubscription = null;
var secondSubscription = null;
firstSubscription = animationFrame.schedule(function () {
actionHappened = true;
if (secondSubscription) {
secondSubscription.unsubscribe();
}
done(new Error('The first action should not have executed.'));
});
secondSubscription = animationFrame.schedule(function () {
if (!actionHappened) {
done();
}
});
if (actionHappened) {
done(new Error('Scheduled action happened synchronously'));
}
else {
firstSubscription.unsubscribe();
}
});
});
//# sourceMappingURL=AnimationFrameScheduler-spec.js.map