server: add git server implementation (#190)

* server: add generic server implementation (transport-independent),
  both for git-upload-pack and git-receive-pack.
* server: move internal functions to internal/common.
* cli: add git-receive-pack and git-upload-pack implementations.
* format/packfile: add UpdateObjectStorage function, extracted from
  Remote.
* transport: implement tranport RPC-like, only with git-upload-pack and
  git-receive-pack methods. Client renamed to Transport.
* storer: add storer.Storer interface.
* protocol/packp: add UploadPackResponse constructor with packfile.
* protocol/packp: fix UploadPackResponse encoding, add tests.
* protocol/packp/capability: implement All.

1 files changed, 60 insertions, 0 deletions

diff --git a/plumbing/transport/http/upload_pack_test.go b/plumbing/transport/http/upload_pack_test.go
new file mode 100644
index 0000000..d3e4989
--- /dev/null
+++ b/plumbing/transport/http/upload_pack_test.go
@@ -0,0 +1,60 @@
+package http
+
+import (
+	"io/ioutil"
+
+	"gopkg.in/src-d/go-git.v4/plumbing"
+	"gopkg.in/src-d/go-git.v4/plumbing/protocol/packp"
+	"gopkg.in/src-d/go-git.v4/plumbing/transport"
+	"gopkg.in/src-d/go-git.v4/plumbing/transport/test"
+
+	. "gopkg.in/check.v1"
+)
+
+type UploadPackSuite struct {
+	test.UploadPackSuite
+}
+
+var _ = Suite(&UploadPackSuite{})
+
+func (s *UploadPackSuite) SetUpSuite(c *C) {
+	s.UploadPackSuite.Client = DefaultClient
+
+	ep, err := transport.NewEndpoint("https://github.com/git-fixtures/basic.git")
+	c.Assert(err, IsNil)
+	s.UploadPackSuite.Endpoint = ep
+
+	ep, err = transport.NewEndpoint("https://github.com/git-fixtures/empty.git")
+	c.Assert(err, IsNil)
+	s.UploadPackSuite.EmptyEndpoint = ep
+
+	ep, err = transport.NewEndpoint("https://github.com/git-fixtures/non-existent.git")
+	c.Assert(err, IsNil)
+	s.UploadPackSuite.NonExistentEndpoint = ep
+}
+
+// Overwritten, different behaviour for HTTP.
+func (s *UploadPackSuite) TestAdvertisedReferencesNotExists(c *C) {
+	r, err := s.Client.NewUploadPackSession(s.NonExistentEndpoint)
+	c.Assert(err, IsNil)
+	info, err := r.AdvertisedReferences()
+	c.Assert(err, Equals, transport.ErrAuthorizationRequired)
+	c.Assert(info, IsNil)
+}
+
+func (s *UploadPackSuite) TestuploadPackRequestToReader(c *C) {
+	r := packp.NewUploadPackRequest()
+	r.Wants = append(r.Wants, plumbing.NewHash("d82f291cde9987322c8a0c81a325e1ba6159684c"))
+	r.Wants = append(r.Wants, plumbing.NewHash("2b41ef280fdb67a9b250678686a0c3e03b0a9989"))
+	r.Haves = append(r.Haves, plumbing.NewHash("6ecf0ef2c2dffb796033e5a02219af86ec6584e5"))
+
+	sr, err := uploadPackRequestToReader(r)
+	c.Assert(err, IsNil)
+	b, _ := ioutil.ReadAll(sr)
+	c.Assert(string(b), Equals,
+		"0032want 2b41ef280fdb67a9b250678686a0c3e03b0a9989\n"+
+			"0032want d82f291cde9987322c8a0c81a325e1ba6159684c\n0000"+
+			"0032have 6ecf0ef2c2dffb796033e5a02219af86ec6584e5\n0000"+
+			"0009done\n",
+	)
+}