chooks/test/count.test.js

基于 [`@vue/composition-api`](https://github.com/vuejs/composition-api) 的vue hooks函数

import Vue from 'vue'
import compositionAPI from '@vue/composition-api'
Vue.use(compositionAPI)

import { useCount } from "../index"

describe("test useCount", () => {

    test("test normal count", () => {
        const { count, change, min, max } = useCount()
        count.value = 0
        max.value = 2
        change(1)
        expect(count.value).toBe(1)
        change(10)
        expect(count.value).toBe(2)
        change(-1)
        expect(count.value).toBe(1)
    })

    test("test countDown", async () => {
        const { count, countDown, stop } = useCount()
        count.value = 30

        countDown(500, 1).then(data => {
            expect(count.value).toBe(0)
        })

        await new Promise(r => setTimeout(r, 500)).then()
        expect(count.value).toBe(29)

        stop.value()

        await new Promise(r => setTimeout(r, 1000)).then()
        expect(count.value).toBe(29)
    })
})