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25 lines
587 B
JavaScript
25 lines
587 B
JavaScript
/**
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* Unit tests for src/wait.js
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*/
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const { wait } = require('../src/wait')
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const { expect } = require('@jest/globals')
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describe('wait.js', () => {
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it('throws an invalid number', async () => {
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const input = parseInt('foo', 10)
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expect(isNaN(input)).toBe(true)
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await expect(wait(input)).rejects.toThrow('milliseconds not a number')
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})
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it('waits with a valid number', async () => {
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const start = new Date()
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await wait(500)
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const end = new Date()
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const delta = Math.abs(end.getTime() - start.getTime())
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expect(delta).toBeGreaterThan(450)
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})
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})
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