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import {T} from './T'import {filter} from './filter'import {filter as filterRamda} from 'ramda'
const sampleObject = {  a: 1,  b: 2,  c: 3,  d: 4,}
test('happy', () => {  const isEven = n => n % 2 === 0
  expect(filter(isEven, [1, 2, 3, 4])).toEqual([2, 4])  expect(    filter(isEven, {      a: 1,      b: 2,      d: 3,    })  ).toEqual({b: 2})})
test('predicate when input is object', () => {  const obj = {    a: 1,    b: 2,  }  const predicate = (val, prop, inputObject) => {    expect(inputObject).toEqual(obj)    expect(typeof prop).toEqual('string')
    return val < 2  }  expect(filter(predicate, obj)).toEqual({a: 1})})
test('with object', () => {  const isEven = n => n % 2 === 0  const result = filter(isEven, sampleObject)  const expectedResult = {    b: 2,    d: 4,  }
  expect(result).toEqual(expectedResult)})
test('bad inputs difference between Ramda and Rambda', () => {  expect(() => filter(T, null)).toThrowWithMessage(    Error,    `Incorrect iterable input`  )  expect(() => filter(T)(undefined)).toThrowWithMessage(    Error,    `Incorrect iterable input`  )  expect(() => filterRamda(T, null)).toThrowWithMessage(    TypeError,    `Cannot read properties of null (reading 'filter')`  )  expect(() => filterRamda(T, undefined)).toThrowWithMessage(    TypeError,    `Cannot read properties of undefined (reading 'filter')`  )})