1 files changed, 34 insertions, 0 deletions
diff --git a/object/commit/append_test.go b/object/commit/append_test.go
new file mode 100644
index 00000000..46b53c69
--- /dev/null
+++ b/object/commit/append_test.go
@@ -0,0 +1,34 @@
+package commit_test
+
+import (
+	"testing"
+
+	"codeberg.org/lindenii/furgit/internal/testgit"
+	"codeberg.org/lindenii/furgit/object/commit"
+	"codeberg.org/lindenii/furgit/object/id"
+)
+
+func TestCommitSerialize(t *testing.T) {
+	t.Parallel()
+	testgit.ForEachAlgorithm(t, func(t *testing.T, algo id.Algorithm) { //nolint:thelper
+		testRepo := testgit.NewRepo(t, testgit.RepoOptions{ObjectFormat: algo, Bare: true})
+		_, _, commitID := testRepo.MakeCommit(t, "subject\n\nbody")
+
+		rawBody := testRepo.CatFile(t, "commit", commitID)
+
+		parsed, err := commit.Parse(rawBody, algo)
+		if err != nil {
+			t.Fatalf("ParseCommit: %v", err)
+		}
+
+		rawObj, err := parsed.AppendWithHeader([]byte(nil))
+		if err != nil {
+			t.Fatalf("BytesWithHeader: %v", err)
+		}
+
+		gotID := algo.Sum(rawObj)
+		if gotID != commitID {
+			t.Fatalf("commit id mismatch: got %s want %s", gotID, commitID)
+		}
+	})
+}