public function testFromLockReturnsComposerObject()
 {
     $factory = new ComposerFactory();
     $root = vfsStream::setup('root');
     $file = vfsStream::newFile('composer.lock');
     $file->setContent('{"_readme": [],"hash": "ac82fae1f7095370dc4c7299aa637a30","content-hash": "3faf23edaf51060bfe1830506104ec83","packages": [{"name": "vendor/lib","version": "v2.7.6"}], "packages-dev": [{"name": "vendor/devlib","version": "v0.0.6"}]}');
     $root->addChild($file);
     $this->assertInstanceOf('SensioLabs\\DeprecationDetector\\RuleSet\\Loader\\Composer\\Composer', $composer = $factory->fromLock(vfsStream::url('root/composer.lock')));
 }
 /**
  * {@inheritdoc}
  */
 public function loadRuleSet($lock)
 {
     try {
         $composer = $this->factory->fromLock($lock);
     } catch (ComposerException $e) {
         throw new CouldNotLoadRuleSetException($e->getMessage());
     }
     $ruleSet = new RuleSet();
     foreach ($composer->getPackages() as $package) {
         $ruleSet->merge($this->loadPackageRuleSet($package));
     }
     return $ruleSet;
 }