public function testsValues()
{
$input = Builder::week();
$input->val('2014-W55');
$this->assertFalse($input->isValid());
$input->val('2014-W16');
$this->assertTrue($input->isValid());
$this->assertEquals('2014-W16', $input->val());
$input->max('2014-W15');
$this->assertFalse($input->isValid());
$input->max('2014-W16');
$this->assertTrue($input->isValid());
$input->max('2014-W17');
$this->assertTrue($input->isValid());
$input->min('2014-W17');
$this->assertFalse($input->isValid());
}