add equality checks and fuzz testing for chunk and storage data comparison

level/packet_roundtrip_test.go

@@ -0,0 +1,34 @@
+package level_test
+
+import (
+	"bytes"
+	"testing"
+
+	"github.com/admin-else/strom/level"
+)
+
+func FuzzReadChunkFromChunkPacketData(f *testing.F) {
+	f.Fuzz(func(t *testing.T, raw []byte) {
+		chunk, err := level.ReadChunkFromChunkPacketData(bytes.NewReader(raw), "1.21.11", 384)
+		if err != nil {
+			t.Skipf("decode failed: %v", err)
+			return
+		}
+
+		b := bytes.NewBuffer(nil)
+		err = chunk.WriteChunkData(b)
+		if err != nil {
+			t.Errorf("Failed to write chunk data: %v", err)
+			return
+		}
+		chunk2, err := level.ReadChunkFromChunkPacketData(bytes.NewReader(b.Bytes()), "1.21.11", 384)
+		if err != nil {
+			t.Errorf("Failed to decode chunk data: %v", err)
+			return
+		}
+		if !chunk.Equals(chunk2) {
+			t.Errorf("Chunks are not equal")
+			return
+		}
+	})
+}