1 files changed, 39 insertions, 0 deletions
diff --git a/internal/proto/proto_test.go b/internal/proto/proto_test.go
new file mode 100644
index 0000000..0e7e644
--- /dev/null
+++ b/internal/proto/proto_test.go
@@ -0,0 +1,39 @@
+package proto
+
+import (
+	"strings"
+	"testing"
+)
+
+func TestEncodeParamsOrder(t *testing.T) {
+	params := map[string]string{"B": "2", "A": "1"}
+	encoded1, err := EncodeParams(params)
+	if err != nil {
+		t.Fatalf("unexpected error: %v", err)
+	}
+	// encode again with different map order
+	encoded2, err := EncodeParams(map[string]string{"A": "1", "B": "2"})
+	if err != nil {
+		t.Fatalf("unexpected error: %v", err)
+	}
+	if encoded1 != encoded2 {
+		t.Fatalf("expected deterministic encode, got %s vs %s", encoded1, encoded2)
+	}
+}
+
+func TestDecodeResponse(t *testing.T) {
+	// "привет" in Cyrillic
+	original := "привет"
+	params := map[string]string{"MSG": original}
+	enc, err := EncodeParams(params)
+	if err != nil {
+		t.Fatalf("encode params: %v", err)
+	}
+	dec, err := DecodeResponse(enc)
+	if err != nil {
+		t.Fatalf("decode: %v", err)
+	}
+	if !strings.Contains(dec, original) {
+		t.Fatalf("expected to contain %q, got %q", original, dec)
+	}
+}