72 lines
2.2 KiB
TypeScript
72 lines
2.2 KiB
TypeScript
import { assert, expect, spy, use } from 'chai'
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import spies from 'chai-spies'
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import { SubscribableObserver } from '../../../src/utils/SubscribableObserver'
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use(spies)
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describe('SubscribableObserver', () => {
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describe('#subscribe()', () => {
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it('should be able to add a subcription', async () => {
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const observer = new SubscribableObserver()
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const subscription = observer.subscribe()
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assert.isDefined(subscription.unsubscribe)
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assert.typeOf(subscription.unsubscribe, 'function')
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})
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it('should be able to unsubscribe', async () => {
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const observer = new SubscribableObserver()
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const subscription = observer.subscribe()
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subscription.unsubscribe()
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})
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})
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describe('#next()', () => {
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it('should be able to emit next value', async () => {
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const onNextSpy = spy()
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const observer = new SubscribableObserver()
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observer.subscribe(onNextSpy)
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observer.next('test')
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expect(onNextSpy).to.has.been.called.with('test')
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observer.next('test')
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expect(onNextSpy).to.has.been.called.exactly(2)
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})
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})
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describe('#complete()', () => {
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it('should be able to complete', async () => {
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const onCompleteSpy = spy()
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const observer = new SubscribableObserver()
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observer.subscribe(undefined, onCompleteSpy)
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observer.complete('test')
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expect(onCompleteSpy).to.has.been.called.with('test')
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observer.complete('test')
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expect(onCompleteSpy).to.has.been.called.exactly(1)
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assert.isTrue(observer.completed)
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})
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})
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describe('#error()', () => {
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it('should be able to emit a error', async () => {
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const onErrorSpy = spy()
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const observer = new SubscribableObserver()
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observer.subscribe(undefined, undefined, onErrorSpy)
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observer.error('test')
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expect(onErrorSpy).to.has.been.called.with('test')
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observer.error('test')
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expect(onErrorSpy).to.has.been.called.exactly(1)
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assert.isTrue(observer.completed)
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})
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})
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})
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