Urgh I made some wrong amends and I'm too tired to separate the commits out this time

ancestor: Split out of reachability
mergebase: Add merge base routines
internal/commitquery: Add commit query context engine thingy
internal/peel: Shared tag peeling
errors: Shared object query errors
internal/testgit: Add rooted repo helpers; remove raw path access
objectstore/memory: Add in-memory object store
objectid: Add Compare helper

1 files changed, 29 insertions, 0 deletions

diff --git a/internal/testgit/repo_open_object_store.go b/internal/testgit/repo_open_object_store.go
new file mode 100644
index 00000000..aac71d60
--- /dev/null
+++ b/internal/testgit/repo_open_object_store.go
@@ -0,0 +1,29 @@
+package testgit
+
+import (
+	"testing"
+
+	"codeberg.org/lindenii/furgit/objectstore"
+	"codeberg.org/lindenii/furgit/repository"
+)
+
+// OpenObjectStore opens the repository object store and registers cleanup on
+// the caller.
+//
+//nolint:ireturn
+func (testRepo *TestRepo) OpenObjectStore(tb testing.TB) objectstore.Store {
+	tb.Helper()
+
+	root := testRepo.OpenGitRoot(tb)
+
+	repo, err := repository.Open(root)
+	if err != nil {
+		tb.Fatalf("repository.Open: %v", err)
+	}
+
+	tb.Cleanup(func() {
+		_ = repo.Close()
+	})
+
+	return repo.Objects()
+}