public function testSaveWorkingCopy()
{
$vcs = new Git();
$vcs->createTag(new \Liip\RMT\Version('2.0.0'));
$this->assertEquals(array(), $vcs->getAllModificationsSince('2.0.0'));
exec('rm file2');
$vcs->saveWorkingCopy('Remove the second file');
$this->assertCount(1, $vcs->getAllModificationsSince('2.0.0'));
}