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34 lines
857 B
34 lines
857 B
import { nextTick } from 'core/util/env'
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describe('nextTick', () => {
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it('accepts a callback', done => {
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nextTick(done)
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})
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it('returns undefined when passed a callback', () => {
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expect(nextTick(() => {})).toBeUndefined()
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})
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if (typeof Promise !== 'undefined') {
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it('returns a Promise when provided no callback', done => {
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nextTick().then(done)
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})
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it('returns a Promise with a context argument when provided a falsy callback and an object', done => {
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const obj = {}
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nextTick(undefined, obj).then(ctx => {
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expect(ctx).toBe(obj)
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done()
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})
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})
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it('returned Promise should resolve correctly vs callback', done => {
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const spy = jasmine.createSpy()
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nextTick(spy)
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nextTick().then(() => {
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expect(spy).toHaveBeenCalled()
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done()
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})
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})
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}
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})
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