1 files changed, 52 insertions, 0 deletions
diff --git a/obj_test.go b/obj_test.go
new file mode 100644
index 00000000..124127a5
--- /dev/null
+++ b/obj_test.go
@@ -0,0 +1,52 @@
+package furgit
+
+import (
+	"fmt"
+	"testing"
+)
+
+func TestObjectTypeSize(t *testing.T) {
+	repoPath, cleanup := setupTestRepo(t)
+	defer cleanup()
+
+	testData := []byte("Test data for size check")
+	gitHash := gitHashObject(t, repoPath, "blob", testData)
+
+	repo, err := OpenRepository(repoPath)
+	if err != nil {
+		t.Fatalf("OpenRepository failed: %v", err)
+	}
+	defer func() { _ = repo.Close() }()
+
+	hash, _ := repo.ParseHash(gitHash)
+	ty, size, err := repo.ReadObjectTypeSize(hash)
+	if err != nil {
+		t.Fatalf("ReadObjectTypeSize failed: %v", err)
+	}
+
+	if ty != ObjectTypeBlob {
+		t.Errorf("type: got %d, want %d", ty, ObjectTypeBlob)
+	}
+
+	gitSize := string(gitCatFile(t, repoPath, "-s", gitHash))
+	if size != int64(len(testData)) || gitSize != fmt.Sprintf("%d", size) {
+		t.Errorf("size mismatch: furgit=%d git=%s expected=%d", size, gitSize, len(testData))
+	}
+}
+
+func TestReadObjectInvalid(t *testing.T) {
+	repoPath, cleanup := setupTestRepo(t)
+	defer cleanup()
+
+	repo, err := OpenRepository(repoPath)
+	if err != nil {
+		t.Fatalf("OpenRepository failed: %v", err)
+	}
+	defer func() { _ = repo.Close() }()
+
+	invalidHash, _ := repo.ParseHash("0000000000000000000000000000000000000000000000000000000000000000")
+	_, err = repo.ReadObject(invalidHash)
+	if err == nil {
+		t.Error("expected error for invalid object")
+	}
+}