tests: add unit test for prev

electrum/tests/test_util.py

@@ -149,6 +149,13 @@ class TestUtil(ElectrumTestCase):
     def test_parse_URI_parameter_pollution(self):
         self.assertRaises(InvalidBitcoinURI, parse_bip21_URI, 'bitcoin:15mKKb2eos1hWa6tisdPwwDC1a5J1y9nma?amount=0.0003&label=test&amount=30.0')
 
+    @as_testnet
+    def test_parse_URI_unsupported_req_key(self):
+        self._do_test_parse_URI('bitcoin:TB1QXJ6KVTE6URY2MX695METFTFT7LR5HYK4M3VT5F?amount=0.00100000&label=test&somethingyoudontunderstand=50',
+                                {'address': 'TB1QXJ6KVTE6URY2MX695METFTFT7LR5HYK4M3VT5F', 'amount': 100000, 'label': 'test', 'somethingyoudontunderstand': '50'})
+        # now test same URI but with "req-test=1" added
+        self.assertRaises(InvalidBitcoinURI, parse_bip21_URI, 'bitcoin:TB1QXJ6KVTE6URY2MX695METFTFT7LR5HYK4M3VT5F?amount=0.00100000&label=test&req-test=1&somethingyoudontunderstand=50')
+
     @as_testnet
     def test_parse_URI_lightning_consistency(self):
         # bip21 uri that *only* includes a "lightning" key. LN part does not have fallback address