public function test_should_return_empty_commit()
 {
     $commit = new WordPress_GitHub_Sync_Commit(new stdClass());
     $this->assertSame('', $commit->sha());
     $this->assertSame('', $commit->url());
     $this->assertFalse($commit->author());
     $this->assertSame('', $commit->author_email());
     $this->assertFalse($commit->committer());
     $this->assertSame('', $commit->message());
     $this->assertEmpty($commit->parents());
     $this->assertSame('', $commit->tree_sha());
 }