test(watchDebounced):watchDebounced ut statements 100% branches 100% …

…functions 100% lines 100%

packages/shared/watchDebounced/index.test.ts

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+import { nextTick, ref } from 'vue-demi'
+import { promiseTimeout } from '../utils'
+import { debouncedWatch, watchDebounced } from '.'
+
+describe('watchDebounced', () => {
+  it('should export module', () => {
+    expect(watchDebounced).toBeDefined()
+    expect(debouncedWatch).toBeDefined()
+  })
+
+  it('should work', async () => {
+    const num = ref(0)
+    const cb = vi.fn()
+    watchDebounced(num, cb, { debounce: 100, maxWait: 150 })
+
+    num.value = 1
+    await nextTick()
+    expect(cb).toHaveBeenCalledTimes(0)
+
+    num.value = 2
+    await promiseTimeout(50)
+    expect(cb).toHaveBeenCalledTimes(0)
+
+    await promiseTimeout(50)
+    expect(cb).toHaveBeenCalledWith(2, 1, expect.anything())
+
+    num.value = 4
+    await promiseTimeout(80)
+    expect(cb).toHaveBeenCalledTimes(1)
+
+    num.value = 5
+    await promiseTimeout(70)
+    expect(cb).toHaveBeenCalledTimes(2)
+    expect(cb).toHaveBeenCalledWith(4, 2, expect.anything())
+  })
+})