objectstore/loose: Add loose writer in bytes

1 files changed, 93 insertions, 0 deletions

diff --git a/objectstore/loose/write_test.go b/objectstore/loose/write_test.go
new file mode 100644
index 00000000..835d451f
--- /dev/null
+++ b/objectstore/loose/write_test.go
@@ -0,0 +1,93 @@
+package loose_test
+
+import (
+	"bytes"
+	"testing"
+
+	"codeberg.org/lindenii/furgit/internal/testgit"
+	"codeberg.org/lindenii/furgit/objectheader"
+	"codeberg.org/lindenii/furgit/objectid"
+	"codeberg.org/lindenii/furgit/objecttype"
+)
+
+func TestLooseStoreWriteBytesContentAgainstGit(t *testing.T) {
+	testgit.ForEachAlgorithm(t, func(t *testing.T, algo objectid.Algorithm) {
+		testRepo := testgit.NewBareRepo(t, algo)
+		store := openLooseStore(t, testRepo.Dir(), algo)
+
+		content := []byte("written-by-loose-store\n")
+		expectedHex := testRepo.RunInput(t, content, "hash-object", "-t", "blob", "--stdin")
+		expectedID, err := objectid.ParseHex(algo, expectedHex)
+		if err != nil {
+			t.Fatalf("ParseHex(expected): %v", err)
+		}
+
+		writtenID, err := store.WriteBytesContent(objecttype.TypeBlob, content)
+		if err != nil {
+			t.Fatalf("WriteBytesContent: %v", err)
+		}
+		if writtenID != expectedID {
+			t.Fatalf("WriteBytesContent id = %s, want %s", writtenID, expectedID)
+		}
+
+		gotBody := testRepo.CatFile(t, "blob", writtenID)
+		if !bytes.Equal(gotBody, content) {
+			t.Fatalf("git cat-file body mismatch")
+		}
+
+		writtenID2, err := store.WriteBytesContent(objecttype.TypeBlob, content)
+		if err != nil {
+			t.Fatalf("WriteBytesContent second write: %v", err)
+		}
+		if writtenID2 != expectedID {
+			t.Fatalf("WriteBytesContent second id = %s, want %s", writtenID2, expectedID)
+		}
+	})
+}
+
+func TestLooseStoreWriteBytesFullAgainstGit(t *testing.T) {
+	testgit.ForEachAlgorithm(t, func(t *testing.T, algo objectid.Algorithm) {
+		testRepo := testgit.NewBareRepo(t, algo)
+		store := openLooseStore(t, testRepo.Dir(), algo)
+
+		body := []byte("full-write-body\n")
+		header, ok := objectheader.Encode(objecttype.TypeBlob, int64(len(body)))
+		if !ok {
+			t.Fatalf("objectheader.Encode failed")
+		}
+		raw := make([]byte, len(header)+len(body))
+		copy(raw, header)
+		copy(raw[len(header):], body)
+
+		wantID := algo.Sum(raw)
+		gotID, err := store.WriteBytesFull(raw)
+		if err != nil {
+			t.Fatalf("WriteBytesFull: %v", err)
+		}
+		if gotID != wantID {
+			t.Fatalf("WriteBytesFull id = %s, want %s", gotID, wantID)
+		}
+
+		gotBody := testRepo.CatFile(t, "blob", gotID)
+		if !bytes.Equal(gotBody, body) {
+			t.Fatalf("git cat-file body mismatch")
+		}
+	})
+}
+
+func TestLooseStoreWriteValidationErrors(t *testing.T) {
+	testgit.ForEachAlgorithm(t, func(t *testing.T, algo objectid.Algorithm) {
+		testRepo := testgit.NewBareRepo(t, algo)
+		store := openLooseStore(t, testRepo.Dir(), algo)
+
+		if _, err := store.WriteBytesFull([]byte("blob 1\x00hello")); err == nil {
+			t.Fatalf("WriteBytesFull expected size/content mismatch error")
+		}
+		if _, err := store.WriteBytesFull([]byte("not-a-header")); err == nil {
+			t.Fatalf("WriteBytesFull expected malformed header error")
+		}
+		if _, err := store.WriteBytesContent(objecttype.TypeInvalid, []byte("x")); err == nil {
+			t.Fatalf("WriteBytesContent expected invalid type error")
+		}
+	})
+}