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; }); });