Merge pull request go-git#71 from kappyhappy/master

Remote.Push: support force option

Author: mcuadros

options.go

@@ -6,12 +6,12 @@ import (
 	"strings"
 	"time"
 
-	"golang.org/x/crypto/openpgp"
 	"github.com/go-git/go-git/v5/config"
 	"github.com/go-git/go-git/v5/plumbing"
 	"github.com/go-git/go-git/v5/plumbing/object"
 	"github.com/go-git/go-git/v5/plumbing/protocol/packp/sideband"
 	"github.com/go-git/go-git/v5/plumbing/transport"
+	"golang.org/x/crypto/openpgp"
 )
 
 // SubmoduleRescursivity defines how depth will affect any submodule recursive
@@ -190,6 +190,9 @@ type PushOptions struct {
 	// Prune specify that remote refs that match given RefSpecs and that do
 	// not exist locally will be removed.
 	Prune bool
+	// Force allows the push to update a remote branch even when the local
+	// branch does not descend from it.
+	Force bool
 }
 
 // Validate validates the fields and sets the default values.

remote.go

@@ -123,6 +123,15 @@ func (r *Remote) PushContext(ctx context.Context, o *PushOptions) (err error) {
 		return ErrDeleteRefNotSupported
 	}
 
+	if o.Force {
+		for i := 0; i < len(o.RefSpecs); i++ {
+			rs := &o.RefSpecs[i]
+			if !rs.IsForceUpdate() {
+				o.RefSpecs[i] = config.RefSpec("+" + rs.String())
+			}
+		}
+	}
+
 	localRefs, err := r.references()
 	if err != nil {
 		return err

remote_test.go

@@ -612,6 +612,34 @@ func (s *RemoteSuite) TestPushForce(c *C) {
 	c.Assert(newRef, Not(DeepEquals), oldRef)
 }
 
+func (s *RemoteSuite) TestPushForceWithOption(c *C) {
+	f := fixtures.Basic().One()
+	sto := filesystem.NewStorage(f.DotGit(), cache.NewObjectLRUDefault())
+
+	dstFs := f.DotGit()
+	dstSto := filesystem.NewStorage(dstFs, cache.NewObjectLRUDefault())
+
+	url := dstFs.Root()
+	r := NewRemote(sto, &config.RemoteConfig{
+		Name: DefaultRemoteName,
+		URLs: []string{url},
+	})
+
+	oldRef, err := dstSto.Reference(plumbing.ReferenceName("refs/heads/branch"))
+	c.Assert(err, IsNil)
+	c.Assert(oldRef, NotNil)
+
+	err = r.Push(&PushOptions{
+		RefSpecs: []config.RefSpec{"refs/heads/master:refs/heads/branch"},
+		Force:    true,
+	})
+	c.Assert(err, IsNil)
+
+	newRef, err := dstSto.Reference(plumbing.ReferenceName("refs/heads/branch"))
+	c.Assert(err, IsNil)
+	c.Assert(newRef, Not(DeepEquals), oldRef)
+}
+
 func (s *RemoteSuite) TestPushPrune(c *C) {
 	fs := fixtures.Basic().One().DotGit()
 	url := c.MkDir()