Jan 18, 2021 · Jan 17, 2021 · Jan 18, 2021 · Jan 18, 2021 · Jan 18, 2021 · Jan 18, 2021
diff --git a/test/index.ts b/test/index.ts
      expect(cache.delete).to.have.been.called.exactly(1).called.with.exactly(key)
      setTimeout(() => process.off('unhandledRejection', noop))
    })

    it('returns the same promise to new and memoized calls', async () => {
      const cache = new Map()
      spy.on(cache, ['set'])
      const key = {}
      const hash = spy(() => key)

      const asyncFn = spy(async function (cacheKey: string): Promise<string> {
        return new Promise<string>(resolveFn =>
          setTimeout(function () {
            resolveFn(cacheKey)
          }, 250)
        )
      })

      const m = memoize(asyncFn, {hash, cache})
      let calledCount = 0
      const p1 = m('1')
      const p2 = m('1')
      const p3 = m('1')

      expect(cache.set).to.have.been.called.exactly(1).called.with(key)

      expect(
        await Promise.all([
          (async () => {
            await p1
            const prevCalledCount = calledCount
            calledCount++
            return prevCalledCount
          })(),
          (async () => {
            await p2
            const prevCalledCount = calledCount
            calledCount++
            return prevCalledCount
          })(),
          (async () => {
            await p3
            const prevCalledCount = calledCount
            calledCount++
            return prevCalledCount
          })()
        ])
      ).to.eql([0, 1, 2])
    })
  })
 })
Original file line number	Diff line number	Diff line change
Expand Up		@@ -117,51 +117,5 @@ describe('memoize', () => {
		expect(cache.delete).to.have.been.called.exactly(1).called.with.exactly(key)
		setTimeout(() => process.off('unhandledRejection', noop))
		})

		it('returns the same promise to new and memoized calls', async () => {
		const cache = new Map()
		spy.on(cache, ['set'])
		const key = {}
		const hash = spy(() => key)

		const asyncFn = spy(async function (cacheKey: string): Promise<string> {
		return new Promise<string>(resolveFn =>
		setTimeout(function () {
		resolveFn(cacheKey)
		}, 250)
		)
		})

		const m = memoize(asyncFn, {hash, cache})
		let calledCount = 0
		const p1 = m('1')
		const p2 = m('1')
		const p3 = m('1')

		expect(cache.set).to.have.been.called.exactly(1).called.with(key)

		expect(
		await Promise.all([
		(async () => {
		await p1
		const prevCalledCount = calledCount
		calledCount++
		return prevCalledCount
		})(),
		(async () => {
		await p2
		const prevCalledCount = calledCount
		calledCount++
		return prevCalledCount
		})(),
		(async () => {
		await p3
		const prevCalledCount = calledCount
		calledCount++
		return prevCalledCount
		})()
		])
		).to.eql([0, 1, 2])
		})
		})
		})