import { deepCopy } from '../'
import { describe, it, expect } from 'vitest'

describe('deepCopy', () => {
	it('should copy an object without reference', () => {
		const objToCopy = {
			a: {
				b: 'b',
			},
		}

		const copiedObj = deepCopy(objToCopy)

		copiedObj.a.b = 'test'

		expect(objToCopy.a.b).toBe('b')
	})

	it('should copy an array without reference', () => {
		const arrayToCopy = [['a']]

		const copiedArray = deepCopy(arrayToCopy)

		copiedArray[0][0] = 'test'

		expect(arrayToCopy[0]?.[0]).toBe('a')
	})

	it('should copy an array containing falsy values', () => {
		const arrayToCopy = [[false, null, 0]]

		const copiedArray = deepCopy(arrayToCopy)

		expect(copiedArray[0][0]).toBe(false)
		expect(copiedArray[0][1]).toBeNull()
		expect(copiedArray[0][2]).toBe(0)

		copiedArray[0][0] = 'test'
		copiedArray[0][1] = 'test'
		copiedArray[0][2] = 'test'

		expect(arrayToCopy[0]?.[0]).toBe(false)
		expect(arrayToCopy[0]?.[1]).toBeNull()
		expect(arrayToCopy[0]?.[2]).toBe(0)
	})

	it('should copy an array containing undefined', () => {
		const arrayToCopy = [[undefined]]

		const copiedArray = deepCopy(arrayToCopy)

		expect(copiedArray[0][0]).toBeUndefined()

		copiedArray[0][0] = 'test'

		expect(arrayToCopy[0]?.[0]).toBeUndefined()
	})
})