CompiledClassMetadataCacheWarmer example

use Symfony\Component\Serializer\CacheWarmer\CompiledClassMetadataCacheWarmer;
use Symfony\Component\Serializer\Mapping\Factory\ClassMetadataFactoryCompiler;
use Symfony\Component\Serializer\Mapping\Factory\ClassMetadataFactoryInterface;

final class CompiledClassMetadataCacheWarmerTest extends TestCase
{
    public function testItImplementsCacheWarmerInterface()
    {
        $classMetadataFactory = $this->createMock(ClassMetadataFactoryInterface::class);
        $filesystem = $this->createMock(Filesystem::class);

        $compiledClassMetadataCacheWarmer = new CompiledClassMetadataCacheWarmer([], $classMetadataFactory, new ClassMetadataFactoryCompiler(), $filesystem);

        $this->assertInstanceOf(CacheWarmerInterface::class, $compiledClassMetadataCacheWarmer);
    }

    public function testItIsAnOptionalCacheWarmer()
    {
        $classMetadataFactory = $this->createMock(ClassMetadataFactoryInterface::class);
        $filesystem = $this->createMock(Filesystem::class);

        $compiledClassMetadataCacheWarmer = new CompiledClassMetadataCacheWarmer([], $classMetadataFactory, new ClassMetadataFactoryCompiler(), $filesystem);