tape: Test U16CastSafe

metadapta_test.go

@@ -0,0 +1,27 @@
+package hopp
+
+import "bytes"
+import "slices"
+import "testing"
+
+func TestDecodeMessageA(test *testing.T) {
+	transID, method, payload, err := decodeMessageA(bytes.NewReader([]byte {
+		0x58, 0x00, 0xFE, 0xAB, 0xC3, 0x10, 0x4F, 0x04,
+		0x6B, 0x12,
+		0x00, 0x06,
+		0x00, 0x01, 0x02, 0x03, 0x04, 0x05,
+	}))
+	if err != nil {
+		test.Fatal(err)
+	}
+	if got, correct := transID, int64(0x5800FEABC3104F04); got != correct {
+		test.Fatalf("not equal: %v %v", got, correct)
+	}
+	if got, correct := method, uint16(0x6B12); got != correct {
+		test.Fatalf("not equal: %v %v", got, correct)
+	}
+	correctPayload := []byte { 0x00, 0x01, 0x02, 0x03, 0x04, 0x05 }
+	if got, correct := payload, correctPayload; !slices.Equal(got, correct) {
+		test.Fatalf("not equal: %v %v", got, correct)
+	}
+}