/**
  * @covers phpDocumentor\Descriptor\FileDescriptor::setNamespaceAliases
  * @covers phpDocumentor\Descriptor\FileDescriptor::getNamespaceAliases
  */
 public function testSetAndGetNamespaceAliases()
 {
     $this->assertInstanceOf('phpDocumentor\\Descriptor\\Collection', $this->fixture->getNamespaceAliases());
     $mockInstance = m::mock('phpDocumentor\\Descriptor\\Collection');
     $mock = $mockInstance;
     $this->fixture->setNamespaceAliases($mock);
     $this->assertSame($mockInstance, $this->fixture->getNamespaceAliases());
 }