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24 lines
675 B
24 lines
675 B
import { describe, expect, it } from '@jest/globals'
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import findIndex from './findIndex.js'
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describe('findIndex', () => {
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it('should return index of an object in an array, that matches a predicate', () => {
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const arr = [
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{ name: 'foo' },
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{ name: 'bar' },
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{ name: '123' },
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]
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const index = findIndex(arr, item => item.name === 'bar')
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expect(index).toEqual(1)
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})
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it('should return -1 when no object in an array matches a predicate', () => {
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const arr = [
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{ name: 'foo' },
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{ name: 'bar' },
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{ name: '123' },
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]
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const index = findIndex(arr, item => item.name === 'hello')
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expect(index).toEqual(-1)
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})
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})
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