Question

我正在测试我的Validator php类。该类将其验证器方法作为特征。因此 src 文件夹中有Validator.php文件， test 文件夹中有validatorMethods.php和ValidatorTest.php文件。

我想用一些不同的validatorMethods.php文件测试Validator类，这样就可以加载验证器方法的不同特性，或者做任何其他事情来提供验证器方法的一些特性，以针对这些方法测试Validator类。

我想过将某些特征放入数组，然后将特征注入循环中的Validator类。但是没有办法将特征注入对象......

那么如何针对各种特征测试课程呢？也许更好的方法是使用每个使用不同特征的对象？

Answer 1

If I understand you correctly, you have a Validator class that you want to dynamically implement different traits with. This isn't what traits were designed for.

Traits are for sharing common functionality across different classes without requiring them to extend the same class. Rather what you want to do is make each of your traits a stand-alone class that implements an interface. That you can then pass to your Validator class.

This would look like this:

interface ValidatorMethod {
    public function validate($input);
}

class NumberValidator implements ValidatorMethod {
    public function validate($input) {
        return is_numeric($input);
    }
}

class IntegerValidator implements ValidatorMethod {
    public function validate($input) {
        return is_integer($input);
    }
}

class Validator {
    private $validators = [];

    public function addValidator (ValidatorMethod $method) {
        $validators[] = $method;
    }

    public function validate($input) {
       foreach ($validators as $validator) {
           if (!$validator->validate($input)) {
               return false;
           }
       }
       return true;
    }
}

In this case, you would write individual tests for each of the ValidatorMethod objects to verify that they pass correctly. As for the Validator class, you would write tests passing in mock ValidatorMethod that would pass and fail as needed. For example, if you wanted to have all the validators run regardless of the pass/fail of previous ones.

The tests would look something like so:

class ExampleValidatorMethodTest {
    public function testValidatePass() {
        $method = new NumberValidator();
        $this->assertTrue($method->validate(1));
    }
}

class ValidatorTest {
    public function testSingleMethod() {
        $method = $this->getMockBuilder('ValidatorMethod')
            ->getMock();

        $input = 'foo';

        $method->expects($this->once())
            ->with($input);
            ->will($this->returnValue(True));

        $validator = new Validator();
        $validator->addValidator($method);

        $this->assertTrue($validator->validate($input));
    }

    public function testMultipleMethods() {
        $method1 = $this->getMockBuilder('ValidatorMethod')
            ->getMock();

        $method2 = $this->getMockBuilder('ValidatorMethod')
            ->getMock();

        $input = 'foo';

        $method1->expects($this->once())
            ->with($input);
            ->will($this->returnValue(True));

        $method2->expects($this->once())
            ->with($input);
            ->will($this->returnValue(True));

        $validator = new Validator();
        $validator->addValidator($method1);
        $validator->addValidator($method2);

        $this->assertTrue($validator->validate($input));
    }
}

There are some optimizations that can be done in the tests to make the code simpler but the examples are to just give an idea of what you are looking to do.

针对PHPUnit中的几个特征测试类

1 个答案: