/**
  * Tests if the merge of two datasources returns the expected
  * configuration node structure.
  *
  * @return void
  */
 public function testMergeDatasources()
 {
     $configuration = new Configuration();
     $configuration->initFromFile(__DIR__ . '/_files/META-INF/appserver-01-ds.xml');
     $this->configuration->initFromFile(__DIR__ . '/_files/META-INF/appserver-ds.xml');
     $this->configuration->merge($configuration);
     $this->assertCount(2, $this->configuration->getChilds('/datasources/datasource'));
 }