Enable multi_ack and multi_ack_detailed capabilities

plumbing/protocol/packp/srvresp.go

@@ -21,11 +21,6 @@ type ServerResponse struct {
 // Decode decodes the response into the struct, isMultiACK should be true, if
 // the request was done with multi_ack or multi_ack_detailed capabilities.
 func (r *ServerResponse) Decode(reader *bufio.Reader, isMultiACK bool) error {
-	// TODO: implement support for multi_ack or multi_ack_detailed responses
-	if isMultiACK {
-		return errors.New("multi_ack and multi_ack_detailed are not supported")
-	}
-
 	s := pktline.NewScanner(reader)
 
 	for s.Scan() {

plumbing/protocol/packp/srvresp_test.go

@@ -75,5 +75,5 @@ func (s *ServerResponseSuite) TestDecodeMalformed(c *C) {
 func (s *ServerResponseSuite) TestDecodeMultiACK(c *C) {
 	sr := &ServerResponse{}
 	err := sr.Decode(bufio.NewReader(bytes.NewBuffer(nil)), true)
-	c.Assert(err, NotNil)
+	c.Assert(err, IsNil)
 }

plumbing/protocol/packp/uppackresp_test.go

@@ -67,7 +67,7 @@ func (s *UploadPackResponseSuite) TestDecodeMultiACK(c *C) {
 	defer res.Close()
 
 	err := res.Decode(ioutil.NopCloser(bytes.NewBuffer(nil)))
-	c.Assert(err, NotNil)
+	c.Assert(err, IsNil)
 }
 
 func (s *UploadPackResponseSuite) TestReadNoDecode(c *C) {

plumbing/transport/common.go

@@ -268,8 +268,6 @@ func parseFile(endpoint string) (*Endpoint, bool) {
 // UnsupportedCapabilities are the capabilities not supported by any client
 // implementation
 var UnsupportedCapabilities = []capability.Capability{
-	capability.MultiACK,
-	capability.MultiACKDetailed,
 	capability.ThinPack,
 }
 

plumbing/transport/common_test.go

@@ -184,5 +184,5 @@ func (s *SuiteCommon) TestFilterUnsupportedCapabilities(c *C) {
 	l.Set(capability.MultiACK)
 
 	FilterUnsupportedCapabilities(l)
-	c.Assert(l.Supports(capability.MultiACK), Equals, false)
+	c.Assert(l.Supports(capability.MultiACK), Equals, true)
 }

plumbing/transport/test/upload_pack.go

@@ -1,6 +1,5 @@
 // Package test implements common test suite for different transport
 // implementations.
-//
 package test
 
 import (
@@ -88,7 +87,7 @@ func (s *UploadPackSuite) TestAdvertisedReferencesFilterUnsupported(c *C) {
 
 	info, err := r.AdvertisedReferences()
 	c.Assert(err, IsNil)
-	c.Assert(info.Capabilities.Supports(capability.MultiACK), Equals, false)
+	c.Assert(info.Capabilities.Supports(capability.MultiACK), Equals, true)
 }
 
 func (s *UploadPackSuite) TestCapabilities(c *C) {