Beotie/lib_test

This library is used by Beotie project as base wrapper for some features. The first objective is to be abble to create tests in traits, rather than test case directly.

Implementing

This library come with two traits, so it is enough to use these traits into your tests.

class MyTestCase extends TestCase
{
    use Beotie\LibTest\Traits\TestCaseTrait,
        MyFeatureTest;
        
    protected function getTestedInstance() : string
    {
        return MyAwesomeClass::class;
    }
}

trait MyFeatureTest
{
    use Beotie\LibTest\Traits\TestTrait;
    
    public function myTest()
    {
        $this->getTestCase()->assertTrue(true);
    }
}

The Beotie\LibTest\Traits\TestCaseTrait implement a getTestCase() method that return the current TestCase instance. It's needed to implement the getTestedInstance() method in order to be able to use the Beotie\LibTest\Traits\TestTrait as it define it abstract.

The TestTrait methods

createEmptyInstance

In order to make unit testing with full abstraction, the TestTrait offer a createEmptyInstance() method that return a new instance of defined tested instance without calling constructor.

trait MyFeatureTest
{
    use Beotie\LibTest\Traits\TestTrait;
    
    public function myTest()
    {
        $instanceToTest = $this->createEmptyInstance();
        $this->getTestCase()->assertTrue($instanceToTest->isEmpty());
    }
}

Property getter and setter

The Beotie\LibTest\Traits\TestTrait allow you to automatically extract and inject values into instance properties. It will follow the inheritance tree in order to find the property location if it is not hosted directly in the tested class and make it accessible if protected or private.

trait MyFeatureTest
{
    use Beotie\LibTest\Traits\TestTrait;
    
    public function myTest()
    {
        $instanceToTest = $this->createEmptyInstance();
        $this->setValue($instance, 'propertyName', 'valueToInject');
        $this->getTestCase()->assertFalse($instanceToTest->isEmpty());
        
        $instanceToTest->setPropertyName('otherValue');
        $this->getTestCase()->assertEquals('otherValue', $this->getValue($instance, 'propertyName'));
    }
}

TestCase wrapping

The Beotie\LibTest\Traits\TestTrait forward method invocation to the stored TestCase, so it's possible to directly call the TestCase methods inside the TestTrait.

trait MyFeatureTest
{
    use Beotie\LibTest\Traits\TestTrait;
    
    public function myTest()
    {
        $instanceToTest = $this->createEmptyInstance();
        $this->setValue($instance, 'propertyName', 'valueToInject');
        $this->assertFalse($instanceToTest->isEmpty());
        
        $instanceToTest->setPropertyName('otherValue');
        $this->assertEquals('otherValue', $this->getValue($instance, 'propertyName'));
    }
}