public function testHead()
{
$strategymock = $this->getMock('GitPHP_ProjectLoadStrategy_Interface');
$strategymock->expects($this->once())->method('LoadHead')->with($this->isInstanceOf('GitPHP_Project'))->will($this->returnValue('refs/heads/master'));
$project = new GitPHP_Project(GITPHP_TEST_PROJECTROOT, 'testrepo.git', $strategymock);
$this->assertEquals('refs/heads/master', $project->GetHeadReference());
$this->assertEquals('refs/heads/master', $project->GetHeadReference());
//cached
}