You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
88 lines
2.9 KiB
88 lines
2.9 KiB
5 years ago
|
describe('matchAt', function () {
|
||
|
|
|
||
|
|
var matchAt;
|
||
|
|
|
||
|
|
beforeEach(function () {
|
||
|
|
matchAt = require('../matchAt.js');
|
||
|
|
});
|
||
|
|
|
||
|
|
it('matches a simple regex', function () {
|
||
|
|
expect(matchAt(/l/, 'hello', 0)).toBe(null);
|
||
|
|
expect(matchAt(/l/, 'hello', 1)).toBe(null);
|
||
|
|
expect(matchAt(/l/, 'hello', 4)).toBe(null);
|
||
|
|
expect(matchAt(/l/, 'hello', 5)).toBe(null);
|
||
|
|
|
||
|
|
var match = matchAt(/l/, 'hello', 2);
|
||
|
|
expect(Array.isArray(match)).toBe(true);
|
||
|
|
expect(match.index).toBe(2);
|
||
|
|
expect(match.input).toBe('hello');
|
||
|
|
expect(match[0]).toBe('l');
|
||
|
|
expect(match[1]).toBe(undefined);
|
||
|
|
expect(match.length).toBe(1);
|
||
|
|
|
||
|
|
var match = matchAt(/l/, 'hello', 3);
|
||
|
|
expect(Array.isArray(match)).toBe(true);
|
||
|
|
expect(match.index).toBe(3);
|
||
|
|
expect(match.input).toBe('hello');
|
||
|
|
expect(match[0]).toBe('l');
|
||
|
|
expect(match[1]).toBe(undefined);
|
||
|
|
expect(match.length).toBe(1);
|
||
|
|
});
|
||
|
|
|
||
|
|
it('matches a zero-length regex', function () {
|
||
|
|
expect(matchAt(/(?=l)/, 'hello', 0)).toBe(null);
|
||
|
|
expect(matchAt(/(?=l)/, 'hello', 1)).toBe(null);
|
||
|
|
expect(matchAt(/(?=l)/, 'hello', 4)).toBe(null);
|
||
|
|
expect(matchAt(/(?=l)/, 'hello', 5)).toBe(null);
|
||
|
|
|
||
|
|
var match = matchAt(/(?=l)/, 'hello', 2);
|
||
|
|
expect(Array.isArray(match)).toBe(true);
|
||
|
|
expect(match.index).toBe(2);
|
||
|
|
expect(match.input).toBe('hello');
|
||
|
|
expect(match[0]).toBe('');
|
||
|
|
expect(match[1]).toBe(undefined);
|
||
|
|
expect(match.length).toBe(1);
|
||
|
|
|
||
|
|
var match = matchAt(/(?=l)/, 'hello', 3);
|
||
|
|
expect(Array.isArray(match)).toBe(true);
|
||
|
|
expect(match.index).toBe(3);
|
||
|
|
expect(match.input).toBe('hello');
|
||
|
|
expect(match[0]).toBe('');
|
||
|
|
expect(match[1]).toBe(undefined);
|
||
|
|
expect(match.length).toBe(1);
|
||
|
|
});
|
||
|
|
|
||
|
|
it('matches a regex with capturing groups', function () {
|
||
|
|
expect(matchAt(/(l)(l)?/, 'hello', 0)).toBe(null);
|
||
|
|
expect(matchAt(/(l)(l)?/, 'hello', 1)).toBe(null);
|
||
|
|
expect(matchAt(/(l)(l)?/, 'hello', 4)).toBe(null);
|
||
|
|
expect(matchAt(/(l)(l)?/, 'hello', 5)).toBe(null);
|
||
|
|
|
||
|
|
var match = matchAt(/(l)(l)?/, 'hello', 2);
|
||
|
|
expect(Array.isArray(match)).toBe(true);
|
||
|
|
expect(match.index).toBe(2);
|
||
|
|
expect(match.input).toBe('hello');
|
||
|
|
expect(match[0]).toBe('ll');
|
||
|
|
expect(match[1]).toBe('l');
|
||
|
|
expect(match[2]).toBe('l');
|
||
|
|
expect(match.length).toBe(3);
|
||
|
|
|
||
|
|
var match = matchAt(/(l)(l)?/, 'hello', 3);
|
||
|
|
expect(Array.isArray(match)).toBe(true);
|
||
|
|
expect(match.index).toBe(3);
|
||
|
|
expect(match.input).toBe('hello');
|
||
|
|
expect(match[0]).toBe('l');
|
||
|
|
expect(match[1]).toBe('l');
|
||
|
|
expect(match[2]).toBe(undefined);
|
||
|
|
expect(match.length).toBe(3);
|
||
|
|
});
|
||
|
|
|
||
|
|
it('copies flags over', function () {
|
||
|
|
expect(matchAt(/L/i, 'hello', 0)).toBe(null);
|
||
|
|
expect(matchAt(/L/i, 'hello', 1)).toBe(null);
|
||
|
|
expect(matchAt(/L/i, 'hello', 2)).not.toBe(null);
|
||
|
|
expect(matchAt(/L/i, 'hello', 3)).not.toBe(null);
|
||
|
|
expect(matchAt(/L/i, 'hello', 4)).toBe(null);
|
||
|
|
expect(matchAt(/L/i, 'hello', 5)).toBe(null);
|
||
|
|
});
|
||
|
|
});
|