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import {zip} from './zip'
const array1 = [1, 2, 3]const array2 = ['A', 'B', 'C']
test('should return an array', () => {  const actual = zip(array1)(array2)  expect(actual).toBeInstanceOf(Array)})
test('should return and array or tuples', () => {  const expected = [    [1, 'A'],    [2, 'B'],    [3, 'C'],  ]  const actual = zip(array1, array2)  expect(actual).toEqual(expected)})
test('should truncate result to length of shorted input list', () => {  const expectedA = [    [1, 'A'],    [2, 'B'],  ]  const actualA = zip([1, 2], array2)  expect(actualA).toEqual(expectedA)
  const expectedB = [    [1, 'A'],    [2, 'B'],  ]  const actualB = zip(array1, ['A', 'B'])  expect(actualB).toEqual(expectedB)})