michael@0: /* 
michael@0:  * Any copyright is dedicated to the Public Domain.
michael@0:  * http://creativecommons.org/licenses/publicdomain/
michael@0:  * Contributor: haytjes <hv1989@gmail.com>
michael@0:  */
michael@0: 
michael@0: /* Check the undefined pattern is equivalent to empty string. */
michael@0: 
michael@0: assertEq(RegExp(undefined).source, '');
michael@0: assertEq(RegExp(undefined).global, false);
michael@0: assertEq("test".replace(RegExp(undefined), "*"), '*test');
michael@0: assertEq(new RegExp(undefined).source, '');
michael@0: assertEq(new RegExp(undefined).global, false);
michael@0: assertEq('test'.replace(new RegExp(undefined), "*"), '*test');
michael@0: 
michael@0: /* Global flags. */
michael@0: 
michael@0: assertEq(new RegExp(undefined, "g").global, true);
michael@0: assertEq("test".replace(new RegExp(undefined, "g"), "*"), "*t*e*s*t*");
michael@0: assertEq(RegExp(undefined, "g").global, true);
michael@0: assertEq("test".replace(RegExp(undefined, "g"), "*"), "*t*e*s*t*");
michael@0: 
michael@0: /* Undefined flags. */
michael@0: 
michael@0: var re = new RegExp(undefined, undefined);
michael@0: assertEq(re.multiline, false);
michael@0: assertEq(re.global, false);
michael@0: assertEq(re.ignoreCase, false);
michael@0: 
michael@0: var re = new RegExp("test", undefined);
michael@0: assertEq(re.multiline, false);
michael@0: assertEq(re.global, false);
michael@0: assertEq(re.ignoreCase, false);
michael@0: 
michael@0: /* Flags argument that requires toString. */
michael@0: 
michael@0: function Flags() {};
michael@0: 
michael@0: Flags.prototype.toString = function dogToString() { return ""; }
michael@0: 
michael@0: var re = new RegExp(undefined, new Flags());
michael@0: assertEq(re.multiline, false);
michael@0: assertEq(re.global, false);
michael@0: assertEq(re.ignoreCase, false);
michael@0: 
michael@0: Flags.prototype.toString = function dogToString() { return "gim"; }
michael@0: 
michael@0: var re = new RegExp(undefined, new Flags());
michael@0: assertEq(re.multiline, true);
michael@0: assertEq(re.global, true);
michael@0: assertEq(re.ignoreCase, true);