Pipe\Manifest::setLogger PHP Method

    function setLogger(Log\LoggerInterface $logger)
    {
        $this->log = $logger;
    }

 function testManifestDumpsAssets()
 {
     $dir = vfsStream::setup('assets');
     $env = new Environment();
     $env->appendPath(__DIR__ . '/fixtures');
     $asset = $env->find('asset1.js', array('bundled' => true));
     $digestName = $asset->getDigestName();
     $logger = new Logger('pipe');
     $logger->pushHandler(new TestHandler());
     $manifest = new Manifest($env, vfsStream::url('assets') . '/manifest.json');
     $manifest->setLogger($logger);
     $manifest->compress = true;
     $manifest->compile('asset1.js');
     $json = json_decode($manifest->toJSON(), true);
     $this->assertEquals($digestName, $json["assets"]["asset1.js"]);
     $fileInfo = $json['files'][$digestName];
     $this->assertArrayHasKey('size', $fileInfo);
     $this->assertArrayHasKey('logical_path', $fileInfo);
     $this->assertArrayHasKey('content_type', $fileInfo);
     $this->assertArrayHasKey('digest', $fileInfo);
     $this->assertTrue($dir->hasChild('manifest.json'));
     $this->assertTrue($dir->hasChild($digestName));
     $this->assertTrue($dir->hasChild($digestName . '.gz'));
 }