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without.spec.js
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without.spec.js
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import { without as withoutRamda } from 'ramda'
import { without } from './without.js'
test('should return a new list without values in the first argument', () => {
const itemsToOmit = [ 'A', 'B', 'C' ]
const collection = [ 'A', 'B', 'C', 'D', 'E', 'F' ]
expect(without(itemsToOmit, collection)).toEqual([ 'D', 'E', 'F' ])
expect(without(itemsToOmit)(collection)).toEqual([ 'D', 'E', 'F' ])
})
test('with list of objects', () => {
const itemsToOmit = [ { a : 1 }, { c : 3 } ]
const collection = [ { a : 1 }, { b : 2 }, { c : 3 }, { d : 4 } ]
const expected = [ { b : 2 }, { d : 4 } ]
expect(without(itemsToOmit, collection)).toEqual(expected)
expect(withoutRamda(itemsToOmit, collection)).toEqual(expected)
})
test('ramda accepts string as target input while rambda throws', () => {
expect(withoutRamda('0:1', [ '0', '0:1' ])).toEqual([ '0:1' ])
expect(() =>
without('0:1', [ '0', '0:1' ])).toThrowErrorMatchingInlineSnapshot('"Cannot read property \'indexOf\' of 0:1"')
expect(without([ '0:1' ], [ '0', '0:1' ])).toEqual([ '0' ])
})
test('ramda test', () => {
expect(without([ 1, 2 ])([ 1, 2, 1, 3, 4 ])).toEqual([ 3, 4 ])
})