91 lines
2.6 KiB
TypeScript
91 lines
2.6 KiB
TypeScript
import { assert, expect, spy, use } from 'chai'
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import * as spies from 'chai-spies'
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import { EventHandler } from '../../src/keeper/EventHandler'
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import { Ocean } from '../../src/ocean/Ocean'
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import config from '../config'
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use(spies)
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describe('EventHandler', () => {
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let ocean: Ocean
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let eventHandler: EventHandler
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before(async () => {
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ocean = await Ocean.getInstance(config)
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eventHandler = new EventHandler((ocean as any).instanceConfig)
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})
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afterEach(() => {
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spy.restore()
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})
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describe('#subscribe()', () => {
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it('should subscribe to an event', async () => {
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const countBefore = eventHandler.count
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const subscription = eventHandler.subscribe(() => null)
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assert.isDefined(subscription)
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const countAfter = eventHandler.count
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assert.equal(
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countBefore + 1,
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countAfter,
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'The event seems not added.'
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)
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subscription.unsubscribe()
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})
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it('should unsubscribe using the subscription', async () => {
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const countBefore = eventHandler.count
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const subscription = eventHandler.subscribe(() => null)
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assert.isDefined(subscription)
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subscription.unsubscribe()
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const countAfter = eventHandler.count
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assert.equal(countBefore, countAfter, 'The event seems not added.')
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})
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})
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describe('#unsubscribe()', () => {
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it('should unsubscribe from an event', async () => {
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const countBefore = eventHandler.count
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const callback = () => null
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eventHandler.subscribe(callback)
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eventHandler.unsubscribe(callback)
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const countAfter = eventHandler.count
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assert.equal(
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countBefore,
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countAfter,
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'The event seems not removed.'
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)
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})
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})
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describe('#checkBlock()', () => {
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it('should call the callback on each new block', async () => {
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let blockNumber = 100000000000
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const callbackSpy = spy()
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spy.on((ocean as any).web3.eth, 'getBlockNumber', () => blockNumber)
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const subscription = eventHandler.subscribe(callbackSpy)
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await new Promise(_ => setTimeout(_, 300))
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expect(callbackSpy).not.to.has.been.called()
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blockNumber++
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await new Promise(_ => setTimeout(_, 300))
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expect(callbackSpy).to.has.been.called.with(blockNumber)
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subscription.unsubscribe()
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})
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})
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})
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