protocol/packp: UploadPackResponse implementation (#161)

* plumbing/protocol: paktp avoid duplication of haves, wants and shallow

* protocol/pakp: UploadPackResponse implementation

* changes

* changes

* changes

* debug

* changes

1 files changed, 82 insertions, 0 deletions

diff --git a/plumbing/protocol/packp/uppackresp_test.go b/plumbing/protocol/packp/uppackresp_test.go
new file mode 100644
index 0000000..c81bb76
--- /dev/null
+++ b/plumbing/protocol/packp/uppackresp_test.go
@@ -0,0 +1,82 @@
+package packp
+
+import (
+	"bytes"
+	"io/ioutil"
+
+	"gopkg.in/src-d/go-git.v4/plumbing/protocol/packp/capability"
+
+	. "gopkg.in/check.v1"
+)
+
+type UploadPackResponseSuite struct{}
+
+var _ = Suite(&UploadPackResponseSuite{})
+
+func (s *UploadPackResponseSuite) TestDecodeNAK(c *C) {
+	raw := "0008NAK\n[PACK]"
+
+	req := NewUploadPackRequest()
+	res := NewUploadPackResponse(req)
+	defer res.Close()
+
+	err := res.Decode(ioutil.NopCloser(bytes.NewBufferString(raw)))
+	c.Assert(err, IsNil)
+
+	pack, err := ioutil.ReadAll(res)
+	c.Assert(err, IsNil)
+	c.Assert(pack, DeepEquals, []byte("[PACK]"))
+}
+
+func (s *UploadPackResponseSuite) TestDecodeDepth(c *C) {
+	raw := "00000008NAK\n[PACK]"
+
+	req := NewUploadPackRequest()
+	req.Depth = DepthCommits(1)
+
+	res := NewUploadPackResponse(req)
+	defer res.Close()
+
+	err := res.Decode(ioutil.NopCloser(bytes.NewBufferString(raw)))
+	c.Assert(err, IsNil)
+
+	pack, err := ioutil.ReadAll(res)
+	c.Assert(err, IsNil)
+	c.Assert(pack, DeepEquals, []byte("[PACK]"))
+}
+
+func (s *UploadPackResponseSuite) TestDecodeMalformed(c *C) {
+	raw := "00000008ACK\n[PACK]"
+
+	req := NewUploadPackRequest()
+	req.Depth = DepthCommits(1)
+
+	res := NewUploadPackResponse(req)
+	defer res.Close()
+
+	err := res.Decode(ioutil.NopCloser(bytes.NewBufferString(raw)))
+	c.Assert(err, NotNil)
+}
+
+func (s *UploadPackResponseSuite) TestDecodeMultiACK(c *C) {
+	req := NewUploadPackRequest()
+	req.Capabilities.Set(capability.MultiACK)
+
+	res := NewUploadPackResponse(req)
+	defer res.Close()
+
+	err := res.Decode(ioutil.NopCloser(bytes.NewBuffer(nil)))
+	c.Assert(err, NotNil)
+}
+
+func (s *UploadPackResponseSuite) TestReadNoDecode(c *C) {
+	req := NewUploadPackRequest()
+	req.Capabilities.Set(capability.MultiACK)
+
+	res := NewUploadPackResponse(req)
+	defer res.Close()
+
+	n, err := res.Read(nil)
+	c.Assert(err, Equals, ErrUploadPackResponseNotDecoded)
+	c.Assert(n, Equals, 0)
+}