# Pin remaining --all-refs paths: incremental relay, batched bootstrap, replicate

`b79fc08`→[main](/content/gh/entireio/git-sync/commits/main/index.html)·  
Soph·2mo ago·1 file·+150 added/-0 removed

Three tests cover the paths that were left implicit:

- **IncrementalRelayWithBranchOnlyPush:** source has a notes ref already current on target, branch needs an update. AllRefs broadens the ref discovery, but pushPlans is branch-only so CanIncrementalRelay accepts. Asserts the relay path engages (RelayMode=incremental) rather than getting tripped up by the broader scope.

- **BatchedTailPhase:** large-blob source forces TargetMaxPackBytes batching on bootstrap. The notes ref on source has to ride the renamed tail-phase (was tag-phase) of executeBatched. Asserts both that the batched mode engaged and the notes ref landed at the right hash.

- **ReplicateRejectsOtherKindIntoExistingTarget:** replicate's relay-only push gates on CanReplicateRelay which rejects RefKindOther. The test pins this as a deliberate v1 limitation: replicate + AllRefs other refs into a non-empty target errors with "use sync instead" rather than silently doing the wrong thing. (Empty-target replicate works via the bootstrap path, which is already covered.)

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

## Sessions

a12ee0dac22bView transcript

## Changes

1

- internal/syncer

- Mintegration_test.go+150

```go
// TestRun_IntegrationAllRefsIncrementalRelayWithBranchOnlyPush verifies
// that setting AllRefs does not regress the incremental relay path when
// the actual push plan happens to be branch-only (e.g. source has a
// notes ref but it's already current on target). The broader ref
// discovery should still let CanIncrementalRelay accept a branch-only
// pushPlans slice and take the relay fast path.
func TestRun_IntegrationAllRefsIncrementalRelayWithBranchOnlyPush(t *testing.T) {
    sourceRepo, sourceFS := newSourceRepo(t)
    makeCommits(t, sourceRepo, sourceFS, 2)

notesRef := plumbing.ReferenceName("refs/notes/commits")
    preNotesHead, err := sourceRepo.Reference(plumbing.NewBranchReferenceName(testBranch), true)
    if err != nil {
        t.Fatalf("resolve pre-update head: %v", err)
    }
    if err := sourceRepo.Storer.SetReference(plumbing.NewHashReference(notesRef, preNotesHead.Hash())); err != nil {
        t.Fatalf("set source notes ref: %v", err)
    }

targetRepo, err := git.Init(memory.NewStorage())
    if err != nil {
        t.Fatalf("init target repo: %v", err)
    }
    // Pre-populate target with both the branch and the notes ref so they
    // match source. The incoming sync only needs to push branch updates.
    if err := copyRefsAndObjects(sourceRepo.Storer, targetRepo.Storer, []plumbing.ReferenceName{plumbing.NewBranchReferenceName(testBranch), notesRef}); err != nil {
        t.Fatalf("copy target baseline: %v", err)
    }
    makeCommits(t, sourceRepo, sourceFS, 1)

sourceServer := newSmartHTTPRepoServerV2(t, sourceRepo)
    targetServer := newSmartHTTPRepoServer(t, targetRepo)
    targetServer.receivePackThinCap = true
    defer sourceServer.Close()
    defer targetServer.Close()

result, err := Run(context.Background(), Config{
        Source:       Endpoint{URL: sourceServer.RepoURL()},
        Target:       Endpoint{URL: targetServer.RepoURL()},
        ProtocolMode: protocolModeAuto,
        AllRefs:      true,
    })
    if err != nil {
        t.Fatalf("all-refs branch-only sync failed: %v", err)
    }
    if !result.Relay || result.RelayMode != relayModeIncremental {
        t.Fatalf("expected incremental relay despite AllRefs scope, got mode=%q reason=%q relay=%v", result.RelayMode, result.RelayReason, result.Relay)
    }
    if result.Pushed != 1 {
        t.Fatalf("expected Pushed=1 (branch update), got %d (result: %+v)", result.Pushed, result)
    }
    assertHeadsMatch(t, sourceRepo, targetRepo, testBranch)
}

// TestBootstrap_IntegrationAllRefsBatchedTailPhase verifies the batched
// bootstrap path (target-max-pack-bytes set) routes other-kind refs
// through the create-only tail phase alongside tags, exercising the
// rename from tag-phase to tail-phase that this branch introduced.
func TestBootstrap_IntegrationAllRefsBatchedTailPhase(t *testing.T) {
    // Implementation details here...
}
```

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