class ParamConversionEnhancerTest

class ParamConversionEnhancerTest extends UnitTestCase {
    
    /**
     * @var \Drupal\Core\Routing\Enhancer\ParamConversionEnhancer
     */
    protected $paramConversionEnhancer;
    
    /**
     * @var \Drupal\Core\ParamConverter\ParamConverterManagerInterface|\PHPUnit\Framework\MockObject\MockObject
     */
    protected $paramConverterManager;
    
    /**
     * {@inheritdoc}
     */
    protected function setUp() {
        parent::setUp();
        $this->paramConverterManager = $this->createMock('Drupal\\Core\\ParamConverter\\ParamConverterManagerInterface');
        $this->paramConversionEnhancer = new ParamConversionEnhancer($this->paramConverterManager);
    }
    
    /**
     * @covers ::enhance
     */
    public function testEnhance() {
        $route = new Route('/test/{id}/{literal}/{null}');
        $raw_variables = [
            'id' => 1,
            'literal' => 'this is a literal',
            'null' => NULL,
        ];
        $defaults = [
            RouteObjectInterface::ROUTE_OBJECT => $route,
        ] + $raw_variables;
        $expected = $defaults;
        $expected['id'] = 'something_better!';
        $expected['_raw_variables'] = new ParameterBag($raw_variables);
        $this->paramConverterManager
            ->expects($this->once())
            ->method('convert')
            ->with($this->isType('array'))
            ->will($this->returnValue($expected));
        $result = $this->paramConversionEnhancer
            ->enhance($defaults, new Request());
        $this->assertEquals($expected, $result);
        // Now run with the results as the new defaults to ensure that the
        // conversion is just run once.
        $result = $this->paramConversionEnhancer
            ->enhance($result, new Request());
        $this->assertEquals($expected, $result);
    }
    
    /**
     * @covers ::copyRawVariables
     */
    public function testCopyRawVariables() {
        $route = new Route('/test/{id}');
        $defaults = [
            RouteObjectInterface::ROUTE_OBJECT => $route,
            'id' => '1',
        ];
        // Set one default to mirror another by reference.
        $defaults['bar'] =& $defaults['id'];
        $this->paramConverterManager
            ->expects($this->any())
            ->method('convert')
            ->with($this->isType('array'))
            ->will($this->returnCallback(function ($defaults) {
            // Convert the mirrored default to another value.
            $defaults['bar'] = '2';
            return $defaults;
        }));
        $expected = new ParameterBag([
            'id' => 1,
        ]);
        $result = $this->paramConversionEnhancer
            ->enhance($defaults, new Request());
        $this->assertEquals($result['_raw_variables'], $expected);
    }

}