public function testStringTrimInvalidOption()
 {
     $this->setExpectedException('InvalidArgumentException', 'key "convert" is invalid, because [ value is not a boolean ]');
     V::assert('foo', V::string()->trim('foo'));
 }
 public function testAssertNegative()
 {
     $this->setExpectedException('\\Validation\\ValidationException');
     V::assert('string', V::number());
 }