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import {length} from './length'import {length as lengthRamda} from 'ramda'
test('happy', () => {  expect(length('foo')).toEqual(3)  expect(length([1, 2, 3])).toEqual(3)  expect(length([])).toEqual(0)})
test('with empty string', () => {  expect(length('')).toEqual(0)})
test('with bad input returns NaN', () => {  expect(length(0)).toBeNaN()  expect(length({})).toBeNaN()  expect(length(null)).toBeNaN()  expect(length(undefined)).toBeNaN()})
test('with length as property', () => {  const input1 = {length: '123'}  const input2 = {length: null}  const input3 = {length: ''}
  expect(length(input1)).toBeNaN()  expect(lengthRamda(input1)).toBeNaN()  expect(length(input2)).toBeNaN()  expect(lengthRamda(input2)).toBeNaN()  expect(length(input3)).toBeNaN()  expect(lengthRamda(input3)).toBeNaN()})