public function testSetGitCommandPath()
 {
     $instance = new VersionControl_Git('./fixtures/001_VersionControl_Git');
     $this->assertEquals($instance->getGitCommandPath(), @System::which('git'));
     $instance->setGitCommandPath('/usr/local/bin/git');
     $this->assertEquals($instance->getGitCommandPath(), '/usr/local/bin/git');
 }