How to unit test PHP traits

Question

I want to know if there is a solution on how to unit-test a PHP trait.

I know we can test a class which is using the trait, but I was wondering if there are better appro

Answer 1

You can test a Trait using a similar to testing an Abstract Class' concrete methods.

PHPUnit has a method getMockForTrait which will return an object that uses the trait. Then you can test the traits functions.

Here is the example from the documentation:

abstractMethod();
    }

    public abstract function abstractMethod();
}

class TraitClassTest extends PHPUnit_Framework_TestCase
{
    public function testConcreteMethod()
    {
        $mock = $this->getMockForTrait('AbstractTrait');

        $mock->expects($this->any())
             ->method('abstractMethod')
             ->will($this->returnValue(TRUE));

        $this->assertTrue($mock->concreteMethod());
    }
}
?>