repository: added cleanup for the PlainCloneContext(). [Fixes #741]

Signed-off-by: Bartek Jaroszewski <[email protected]>

Author: bjaroszewski

repository.go

@@ -350,7 +350,13 @@ func PlainCloneContext(ctx context.Context, path string, isBare bool, o *CloneOp
 		return nil, err
 	}
 
-	return r, r.clone(ctx, o)
+	err = r.clone(ctx, o)
+	if err != nil && err != ErrRepositoryAlreadyExists {
+		os.RemoveAll(path)
+		return nil, err
+	}
+
+	return r, err
 }
 
 func newRepository(s storage.Storer, worktree billy.Filesystem) *Repository {

repository_test.go

@@ -577,6 +577,20 @@ func (s *RepositorySuite) TestPlainCloneContext(c *C) {
 	c.Assert(err, NotNil)
 }
 
+func (s *RepositorySuite) TestPlainCloneContextWithIncorrectRepo(c *C) {
+	ctx, cancel := context.WithCancel(context.Background())
+	cancel()
+	dir, err := ioutil.TempDir("", "plain-clone-context-failure")
+	c.Assert(err, IsNil)
+
+	_, err = PlainCloneContext(ctx, dir, false, &CloneOptions{
+		URL: "incorrectOnPurpose",
+	})
+	_, err = os.Stat(dir)
+
+	c.Assert(err, NotNil)
+}
+
 func (s *RepositorySuite) TestPlainCloneWithRecurseSubmodules(c *C) {
 	if testing.Short() {
 		c.Skip("skipping test in short mode.")