import { isUrl } from './utils'; describe('isUrl tests', () => { it('should return false for invalid and corner case inputs', () => { expect(isUrl([])).toBeFalsy(); expect(isUrl({})).toBeFalsy(); expect(isUrl(false)).toBeFalsy(); expect(isUrl(true)).toBeFalsy(); expect(isUrl(NaN)).toBeFalsy(); expect(isUrl(null)).toBeFalsy(); expect(isUrl(undefined)).toBeFalsy(); expect(isUrl()).toBeFalsy(); expect(isUrl('')).toBeFalsy(); }); it('should return false for invalid URLs', () => { expect(isUrl('foo')).toBeFalsy(); expect(isUrl('bar')).toBeFalsy(); expect(isUrl('bar/test')).toBeFalsy(); expect(isUrl('http:/example.com/')).toBeFalsy(); expect(isUrl('ttp://example.com/')).toBeFalsy(); }); it('should return true for valid URLs', () => { expect(isUrl('http://example.com/')).toBeTruthy(); expect(isUrl('https://example.com/')).toBeTruthy(); expect(isUrl('http://example.com/test/123')).toBeTruthy(); expect(isUrl('https://example.com/test/123')).toBeTruthy(); expect(isUrl('http://example.com/test/123?foo=bar')).toBeTruthy(); expect(isUrl('https://example.com/test/123?foo=bar')).toBeTruthy(); expect(isUrl('http://www.example.com/')).toBeTruthy(); expect(isUrl('https://www.example.com/')).toBeTruthy(); expect(isUrl('http://www.example.com/test/123')).toBeTruthy(); expect(isUrl('https://www.example.com/test/123')).toBeTruthy(); expect(isUrl('http://www.example.com/test/123?foo=bar')).toBeTruthy(); expect(isUrl('https://www.example.com/test/123?foo=bar')).toBeTruthy(); }); });