public function testGetParents()
 {
     $git = new VersionControl_Git(dirname(__FILE__) . '/fixtures/001_VersionControl_Git');
     $instance = new VersionControl_Git_Object_Commit($git, '4ed54abb8efca38a0c794ca414b1f296279e0d85');
     $this->assertFalse($instance->getParents());
     $instance->setParents(array('parent ddf8aa7e97a206847658c90a26fe740b2e17231a', 'invalid'));
     $this->assertFalse($instance->getParents());
     $instance->setParents(array('parent ddf8aa7e97a206847658c90a26fe740b2e17231a', 'parent ddf8aa7e97a206847658c90a26fe740b2e17231a'));
     $parents = $instance->getParents();
     $this->assertEquals((string) $parents[0], 'ddf8aa7e97a206847658c90a26fe740b2e17231a');
     $this->assertEquals((string) $parents[1], 'ddf8aa7e97a206847658c90a26fe740b2e17231a');
     $this->assertEquals(count($parents), 2);
 }