		`@@ -89,6 +89,9 @@`
		`# First commit in the repo`
		`diff = commit.tree.diff_to_tree(swap=True)`

		`+ if diff.patch is None:`
		`+ continue`
		`+`
		`if find_similar and diff:`
		`diff.find_similar()`

		`@@ -138,7 +141,7 @@`
		`if separated:`
		`return patch`
		`else:`
		`- return "".join(patch)`
		`+ return "".join(filter(None, patch))`


		`def generate_gitolite_acls(project=None, group=None):`

		`@@ -3277,6 +3277,20 @@`

		`self.second_commit = repo.revparse_single("HEAD")`

		`+ # Add empty commit`
		`+ repo.create_commit(`
		`+ "refs/heads/master", # the name of the reference to update`
		`+ author,`
		`+ committer,`
		`+ "Empty commit",`
		`+ # binary string representing the tree object ID`
		`+ tree,`
		`+ # list of binary strings representing parents of the new commit`
		`+ [self.second_commit.oid.hex],`
		`+ )`
		`+`
		`+ self.third_commit = repo.revparse_single("HEAD")`
		`+`
		`def test_commit_to_patch_first_commit(self):`
		`""" Test the commit_to_patch function of pagure.lib.git. """`
		`repo = pygit2.init_repository(self.gitrepo)`
		`@@ -3622,6 +3636,24 @@`

		`self.assertEqual(output, exp)`

		`+ def test_commit_to_patch_empty_commit(self):`
		`+ """ Test the commit_to_path function of pagure.lib.git. """`
		`+ repo = pygit2.init_repository(self.gitrepo)`
		`+`
		`+ patch = pagure.lib.git.commit_to_patch(repo, self.third_commit)`
		`+ exp = ""`
		`+ self.assertEqual(patch, exp)`
		`+`
		`+ def test_commit_to_patch_empty_commit_diff(self):`
		`+ """ Test the commit_to_patch function of pagure.lib.git. """`
		`+ repo = pygit2.init_repository(self.gitrepo)`
		`+`
		`+ patch = pagure.lib.git.commit_to_patch(`
		`+ repo, self.third_commit, diff_view=True`
		`+ )`
		`+ exp = ""`
		`+ self.assertEqual(patch, exp)`
		`+`

		`if __name__ == "__main__":`
		`unittest.main(verbosity=2)`