it("test a user-defined type by registering it", function () {
function dateType(arg) {
var x = new Date(arg);
if (x.toString().match('Invalid')) {
throw new TypeError("" + arg + " is not a valid date.");
}
return x;
}
parser = new ArgumentParser({debug: true});
parser.register('type', 'dateType', dateType);
parser.addArgument(['-d'], {type: 'dateType'});
args = parser.parseArgs(['-d', '1/1/2012']);
assert.deepEqual(args, {d: new Date('1/1/2012')});
assert.throws(
function () { parser.parseArgs(['-d', '13/1/2000']); },
/Invalid dateType value: (.*)/i
);
});