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event-spec.js
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event-spec.js
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describe('dc event engine', () => {
describe('event execution', () => {
let engine, trigger;
beforeEach(() => {
engine = dc.events;
trigger = jasmine.createSpy('trigger');
});
it('event can be dispatched immediately', () => {
engine.trigger(trigger);
expect(trigger).toHaveBeenCalled();
});
it('event can be dispatched with delay', () => {
engine.trigger(trigger, 100);
expect(trigger).not.toHaveBeenCalled();
jasmine.clock().tick(101);
expect(trigger).toHaveBeenCalled();
});
it('multiple events dispatched with delay should be throttled', () => {
let times = 0;
let i = 0;
const increment = function () {
times++;
};
while (i < 10) {
engine.trigger(increment.bind(null), 10);
i++;
}
jasmine.clock().tick(5);
expect(times).toEqual(0);
jasmine.clock().tick(5);
expect(times).toEqual(1);
});
afterEach(() => {
});
});
});