transport: add git-send-pack support to local/ssh. (#163)

* protocol/packp: add Packfile field to ReferenceUpdateRequest.
* protocol/packp: add NewReferenceUpdateRequestFromCapabilities.
* NewReferenceUpdateRequestFromCapabilities can be used to create
  a ReferenceUpdateRequest with initial capabilities compatible with
  the server.
* protocol/packp: fix new line handling on report status.
* transport/file: test error on unexisting command.

1 files changed, 31 insertions, 0 deletions

diff --git a/plumbing/transport/file/common_test.go b/plumbing/transport/file/common_test.go
index 94ca4c9..220df3d 100644
--- a/plumbing/transport/file/common_test.go
+++ b/plumbing/transport/file/common_test.go
@@ -1,9 +1,40 @@
 package file
 
 import (
+	"fmt"
+	"io"
+	"os"
+	"strings"
 	"testing"
 
+	"gopkg.in/src-d/go-git.v4/plumbing/transport"
+
 	. "gopkg.in/check.v1"
 )
 
 func Test(t *testing.T) { TestingT(t) }
+
+const bareConfig = `[core]
+repositoryformatversion = 0
+filemode = true
+bare = true`
+
+func prepareRepo(c *C, path string) transport.Endpoint {
+	url := fmt.Sprintf("file://%s", path)
+	ep, err := transport.NewEndpoint(url)
+	c.Assert(err, IsNil)
+
+	// git-receive-pack refuses to update refs/heads/master on non-bare repo
+	// so we ensure bare repo config.
+	config := fmt.Sprintf("%s/config", path)
+	if _, err := os.Stat(config); err == nil {
+		f, err := os.OpenFile(config, os.O_TRUNC|os.O_WRONLY, 0)
+		c.Assert(err, IsNil)
+		content := strings.NewReader(bareConfig)
+		_, err = io.Copy(f, content)
+		c.Assert(err, IsNil)
+		c.Assert(f.Close(), IsNil)
+	}
+
+	return ep
+}