public function testIsLengthBetweenRule()
{
$this->assertTrue(Validator::isLengthBetween('abcde', null, array('min' => 1, 'max' => 7)));
$this->assertTrue(Validator::isLengthBetween('', null, array('min' => 0, 'max' => 7)));
$this->assertFalse(Validator::isLengthBetween('abcd', null, array('min' => 1, 'max' => 3)));
}