import { expect } from 'chai' import u from '../lib' describe('u.map', () => { it('applies updates to each item in an array', () => { const object = [0, 1, 2] const inc = (x) => x + 1 const result = u.map(inc, object) expect(result).to.eql([1, 2, 3]) }) it('applies updates to each value in an object', () => { const object = { a: 0, b: 1, c: 2 } const inc = (x) => x + 1 const result = u.map(inc, object) expect(result).to.eql({ a: 1, b: 2, c: 3 }) }) it('can update with a regular updates object', () => { const object = [{ a: 0 }, { a: 0 }] const result = u.map({ a: 1 }, object) expect(result).to.eql([{ a: 1 }, { a: 1 }]) }) it('returns the same object if no updates are made', () => { const array = [0, 1] const ident = (x) => x let result = u.map(ident, array) expect(result).to.equal(array) const object = { a: 0 } result = u.map(ident, object) expect(result).to.equal(object) }) it('passes the key or index as the second parameter to the iteratee', () => { const object = { a: { x: 0 }, b: [3, 3], } const setToKey = (_, key) => key const result = u.map(u.map(setToKey), object) expect(result).to.eql({ a: { x: 'x' }, b: [0, 1], }) }) it('can be partially applied', () => { const object = { b: [3, 3], } const setToKey = (_, key) => key const result = u( { b: u.map(setToKey), }, object ) expect(result).to.eql({ b: [0, 1], }) }) it('freezes the result', () => { expect(Object.isFrozen(u.map({}, {}))).to.be.true }) })