test(7.14.3): preserve legacy Osmosis release control

Author: BitHighlander

tests/test_msg_osmosis_validation.py

@@ -31,6 +31,22 @@ def _assert_missing_parameter_failure(self, ack):
         self.assertEqual(ret.code, proto_types.Failure_FirmwareError)
         self.assertEndsWith(ret.message, "missing required parameters")
 
+    def test_present_but_empty_amount_is_rejected_before_review(self):
+        # 7.14.3 treats a present-but-empty protobuf string as a missing
+        # required parameter. Keep that release control explicit even though
+        # 7.15 adds the stronger, syntax-specific rejection tested below.
+        if self.firmware_at_least("7.15.0"):
+            self.skipTest("7.15+ uses the syntax-specific empty amount gate")
+        self._start_signing()
+        send = osmosis_proto.OsmosisMsgSend(
+            to_address="osmo1g9el7lzjwh9yun2c4jjzhy09j98vkhfx8tzcpt",
+            amount="",
+            denom="uosmo",
+        )
+        self.assertTrue(send.HasField("amount"))
+        self._assert_missing_parameter_failure(
+            osmosis_proto.OsmosisMsgAck(send=send))
+
     def test_present_but_empty_amount_is_rejected_as_invalid(self):
         # The fail-closed empty-string validator is part of the 7.15 audit
         # fixes; 7.14.3 predates that specific Osmosis hardening.