import { expect } from 'chai' import u from '../lib' describe('u.is', () => { it('returns true if path matches a value predicate', () => { const result = u.is('a.b', 4, { a: { b: 4 } }) expect(result).to.be.true }) it('returns true if path matches a function predicate', () => { const isEven = x => x % 2 === 0 const result = u.is('a.b', isEven, { a: { b: 6 } }) expect(result).to.be.true }) it('returns false if path matches a value predicate', () => { const result = u.is('a.b', 4, { a: { b: 5 } }) expect(result).to.be.false }) it('returns false if path matches a function predicate', () => { const isEven = x => x % 2 === 0 const result = u.is('a.b', isEven, { a: { b: 7 } }) expect(result).to.be.false }) it('returns false if the path does not exist', () => { const result = u.is('a.b.c.d', 4, { a: { b: {} } }) expect(result).to.be.false }) it('can test for undefined', () => { const result = u.is('a.b.c', undefined, { a: { b: {} } }) expect(result).to.be.true }) it('tests the actual object if a blank path is given', () => { const result = u.is('', 4, 4) expect(result).to.be.true }) it('can use arrays as paths', () => { const result = u.is(['a', 'b'], 4, { a: { b: 4 } }) expect(result).to.be.true }) it('can include array indexes in paths', () => { let result = u.is('a.1.b', 4, { a: [{}, { b: 4 }] }) expect(result).to.be.true result = u.is(['a', 1, 'b'], 4, { a: [{}, { b: 4 }] }) expect(result).to.be.true }) it('can be partially applied', () => { const result = u.is('a.b')(4)({ a: { b: 4 } }) expect(result).to.be.true }) })