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feat(forms): handle string with and without line boundary on pattern validator (#19256) 

PR Close #19256
This commit is contained in:
ghetolay 2017-09-18 22:28:36 +02:00 committed by Alex Eagle
parent d6ba9f9fb4
commit 54bf179888
2 changed files with 14 additions and 1 deletions
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9
packages/forms/src/validators.ts
View File

@ -163,7 +163,14 @@ export class Validators {
let regex: RegExp;
let regexStr: string;
if (typeof pattern === 'string') {
regexStr = `^${pattern}$`;
regexStr = '';
if (pattern.charAt(0) !== '^') regexStr += '^';
regexStr += pattern;
if (pattern.charAt(pattern.length - 1) !== '$') regexStr += '$';
regex = new RegExp(regexStr);
} else {
regexStr = pattern.toString();

6
packages/forms/test/validators_spec.ts
View File

@ -270,6 +270,12 @@ import {map} from 'rxjs/operator/map';
it('should not error on "undefined" pattern',
() => expect(Validators.pattern(undefined !)(new FormControl('aaAA'))).toBeNull());
it('should work with string containing line boundary',
() => expect(Validators.pattern('^[aA]*$')(new FormControl('aaAA'))).toBeNull());
it('should work with string not containing line boundary',
() => expect(Validators.pattern('[aA]*')(new FormControl('aaAA'))).toBeNull());
});
describe('compose', () => {