class StackedKernelPassTest

class StackedKernelPassTest extends UnitTestCase {
    
    /**
     * The stacked kernel pass.
     *
     * @var \Drupal\Core\DependencyInjection\Compiler\StackedKernelPass
     */
    protected $stackedKernelPass;
    
    /**
     * @var \Drupal\Core\DependencyInjection\Container
     */
    protected $containerBuilder;
    
    /**
     * {@inheritdoc}
     */
    protected function setUp() {
        $this->stackedKernelPass = new StackedKernelPass();
        $this->containerBuilder = new ContainerBuilder();
    }
    
    /**
     * @covers ::process
     */
    public function testProcessWithStackedKernel() {
        $stacked_kernel = new Definition('Stack\\StackedHttpKernel');
        $this->containerBuilder
            ->setDefinition('http_kernel', $stacked_kernel);
        $this->containerBuilder
            ->setDefinition('http_kernel.basic', $this->createMiddlewareServiceDefinition(FALSE, 0));
        $this->containerBuilder
            ->setDefinition('http_kernel.three', $this->createMiddlewareServiceDefinition());
        $this->containerBuilder
            ->setDefinition('http_kernel.one', $this->createMiddlewareServiceDefinition(TRUE, 10));
        $this->containerBuilder
            ->setDefinition('http_kernel.two', $this->createMiddlewareServiceDefinition(TRUE, 5));
        $this->stackedKernelPass
            ->process($this->containerBuilder);
        $stacked_kernel_args = $this->containerBuilder
            ->getDefinition('http_kernel')
            ->getArguments();
        // Check the stacked kernel args.
        $this->assertSame('http_kernel.one', (string) $stacked_kernel_args[0]);
        $this->assertCount(4, $stacked_kernel_args[1]);
        $this->assertSame('http_kernel.one', (string) $stacked_kernel_args[1][0]);
        $this->assertSame('http_kernel.two', (string) $stacked_kernel_args[1][1]);
        $this->assertSame('http_kernel.three', (string) $stacked_kernel_args[1][2]);
        $this->assertSame('http_kernel.basic', (string) $stacked_kernel_args[1][3]);
        // Check the modified definitions.
        $definition = $this->containerBuilder
            ->getDefinition('http_kernel.one');
        $args = $definition->getArguments();
        $this->assertSame('http_kernel.two', (string) $args[0]);
        $this->assertSame('test', $args[1]);
        $definition = $this->containerBuilder
            ->getDefinition('http_kernel.two');
        $args = $definition->getArguments();
        $this->assertSame('http_kernel.three', (string) $args[0]);
        $this->assertSame('test', $args[1]);
        $definition = $this->containerBuilder
            ->getDefinition('http_kernel.three');
        $args = $definition->getArguments();
        $this->assertSame('http_kernel.basic', (string) $args[0]);
        $this->assertSame('test', $args[1]);
    }
    
    /**
     * @covers ::process
     */
    public function testProcessWithHttpKernel() {
        $kernel = new Definition('Symfony\\Component\\HttpKernel\\HttpKernelInterface');
        $this->containerBuilder
            ->setDefinition('http_kernel', $kernel);
        $this->stackedKernelPass
            ->process($this->containerBuilder);
        $unprocessed_kernel = $this->containerBuilder
            ->getDefinition('http_kernel');
        $this->assertSame($kernel, $unprocessed_kernel);
        $this->assertSame($kernel->getArguments(), $unprocessed_kernel->getArguments());
    }
    
    /**
     * Creates a middleware definition.
     *
     * @param bool $tag
     *   Whether or not to set the http_middleware tag.
     * @param int $priority
     *   The priority to be used for the tag.
     *
     * @return \Symfony\Component\DependencyInjection\Definition
     */
    protected function createMiddlewareServiceDefinition($tag = TRUE, $priority = 0) {
        $definition = new Definition('Symfony\\Component\\HttpKernel\\HttpKernelInterface', [
            'test',
        ]);
        if ($tag) {
            $definition->addTag('http_middleware', [
                'priority' => $priority,
            ]);
        }
        return $definition;
    }

}