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, 39 insertions, 0 deletions

diff --git a/plumbing/protocol/packp/updreq_test.go b/plumbing/protocol/packp/updreq_test.go
new file mode 100644
index 0000000..2412fbf
--- /dev/null
+++ b/plumbing/protocol/packp/updreq_test.go
@@ -0,0 +1,39 @@
+package packp
+
+import (
+	"gopkg.in/src-d/go-git.v4/plumbing/protocol/packp/capability"
+
+	. "gopkg.in/check.v1"
+)
+
+type UpdReqSuite struct{}
+
+var _ = Suite(&UpdReqSuite{})
+
+func (s *UpdReqSuite) TestNewReferenceUpdateRequestFromCapabilities(c *C) {
+	cap := capability.NewList()
+	cap.Set(capability.Sideband)
+	cap.Set(capability.Sideband64k)
+	cap.Set(capability.Quiet)
+	cap.Set(capability.ReportStatus)
+	cap.Set(capability.DeleteRefs)
+	cap.Set(capability.PushCert, "foo")
+	cap.Set(capability.Atomic)
+	cap.Set(capability.Agent, "foo")
+
+	r := NewReferenceUpdateRequestFromCapabilities(cap)
+	c.Assert(r.Capabilities.String(), Equals,
+		"agent=go-git/4.x report-status",
+	)
+
+	cap = capability.NewList()
+	cap.Set(capability.Agent, "foo")
+
+	r = NewReferenceUpdateRequestFromCapabilities(cap)
+	c.Assert(r.Capabilities.String(), Equals, "agent=go-git/4.x")
+
+	cap = capability.NewList()
+
+	r = NewReferenceUpdateRequestFromCapabilities(cap)
+	c.Assert(r.Capabilities.String(), Equals, "")
+}