tests: add more lnurl testing for PaymentIdentifier

adds some more detailed tests to `test_payment_identifier.py` to test
lnurlp and lnurlw separately and mock their resolve.

tests/test_payment_identifier.py

@@ -1,9 +1,13 @@
 import os
+import asyncio
+from unittest.mock import patch
 
 from electrum import SimpleConfig
 from electrum.invoices import Invoice
 from electrum.payment_identifier import (maybe_extract_lightning_payment_identifier, PaymentIdentifier,
-                                         PaymentIdentifierType, invoice_from_payment_identifier)
+                                         PaymentIdentifierType, PaymentIdentifierState,
+                                         invoice_from_payment_identifier)
+from electrum.lnurl import LNURL6Data, LNURL3Data, LNURLError
 from electrum.transaction import PartialTxOutput
 
 from . import ElectrumTestCase
@@ -143,14 +147,112 @@ class TestPaymentIdentifier(ElectrumTestCase):
         pi = PaymentIdentifier(None, bip21)
         self.assertFalse(pi.is_valid())
 
-    def test_lnurl(self):
+    def test_lnurl_basic(self):
-        lnurl = 'lnurl1dp68gurn8ghj7um9wfmxjcm99e5k7telwy7nxenrxvmrgdtzxsenjcm98pjnwxq96s9'
+        """Test basic LNURL parsing without resolve"""
-        pi = PaymentIdentifier(None, lnurl)
+        valid_lnurl = 'lnurl1dp68gurn8ghj7um9wfmxjcm99e5k7telwy7nxenrxvmrgdtzxsenjcm98pjnwxq96s9'
+        pi = PaymentIdentifier(None, valid_lnurl)
         self.assertTrue(pi.is_valid())
+        self.assertEqual(PaymentIdentifierType.LNURL, pi.type)
         self.assertFalse(pi.is_available())
         self.assertTrue(pi.need_resolve())
+        self.assertEqual(PaymentIdentifierState.NEED_RESOLVE, pi.state)
 
-        # TODO: resolve mock
+        # Test with lightning: prefix
+        lightning_lnurl = f'lightning:{valid_lnurl}'
+        pi = PaymentIdentifier(None, lightning_lnurl)
+        self.assertTrue(pi.is_valid())
+        self.assertEqual(PaymentIdentifierType.LNURL, pi.type)
+        self.assertTrue(pi.need_resolve())
+
+    @patch('electrum.payment_identifier.request_lnurl')
+    def test_lnurl_pay_resolve(self, mock_request_lnurl):
+        """Test LNURL-pay (LNURL6) with mocked resolve"""
+        valid_lnurl = 'LNURL1DP68GURN8GHJ7MRWVF5HGUEWD3HXZERYWFJHXUEWVDHK6TMVDE6HYMRS9ANRV46DXETQPJQCS4'
+
+        # Mock lnurl-p response
+        mock_lnurl6_data = LNURL6Data(
+            callback_url='https://example.com/lnurl-pay',
+            max_sendable_sat=1_000_000,
+            min_sendable_sat=1_000,
+            metadata_plaintext='Test payment',
+            comment_allowed=100,
+        )
+        mock_request_lnurl.return_value = mock_lnurl6_data
+
+        pi = PaymentIdentifier(None, valid_lnurl)
+        self.assertTrue(pi.need_resolve())
+        self.assertEqual(PaymentIdentifierType.LNURL, pi.type)
+
+        async def run_resolve():
+            await pi._do_resolve()
+
+        asyncio.run(run_resolve())
+
+        self.assertEqual(PaymentIdentifierType.LNURLP, pi.type)
+        self.assertEqual(PaymentIdentifierState.LNURLP_FINALIZE, pi.state)
+        self.assertTrue(pi.need_finalize())
+        self.assertIsNotNone(pi.lnurl_data)
+        self.assertTrue(isinstance(pi.lnurl_data, LNURL6Data))
+        self.assertEqual(1_000, pi.lnurl_data.min_sendable_sat)
+        self.assertEqual(1_000_000, pi.lnurl_data.max_sendable_sat)
+        self.assertEqual('Test payment', pi.lnurl_data.metadata_plaintext)
+        self.assertEqual(100, pi.lnurl_data.comment_allowed)
+
+    @patch('electrum.payment_identifier.request_lnurl')
+    def test_lnurl_withdraw_resolve(self, mock_request_lnurl):
+        """Test LNURL-withdraw (LNURL3) with mocked resolve"""
+        valid_lnurl = 'LNURL1DP68GURN8GHJ7MRWVF5HGUEWD3HXZERYWFJHXUEWVDHK6TM4WPNHYCTYV4EJ7DFCVGENSDPH8QCRZETXVGCXGCMPVFJR' \
+                        'WENP8P3NJEP3XE3NQWRPXFJR2VRRVSCX2V33V5UNVC3SXP3RXCFSVFSKVWPCV3SKZWTP8YUZ7AMFW35XGUNPWUHKZURF9AMRZT' \
+                        'MVDE6HYMP0FETHVUNZDAMHQ7JSF4RX73TZ2VU9Z3J3GVMSLCJ57F'
+
+        # Mock lnurl-w response
+        mock_lnurl3_data = LNURL3Data(
+            callback_url='https://example.com/lnurl-withdraw',
+            k1='test-k1-value',
+            default_description='Test withdrawal',
+            min_withdrawable_sat=1_000,
+            max_withdrawable_sat=500_000,
+        )
+        mock_request_lnurl.return_value = mock_lnurl3_data
+
+        pi = PaymentIdentifier(None, valid_lnurl)
+        self.assertTrue(pi.need_resolve())
+        self.assertEqual(PaymentIdentifierType.LNURL, pi.type)
+
+        async def run_resolve():
+            await pi._do_resolve()
+
+        asyncio.run(run_resolve())
+
+        self.assertEqual(PaymentIdentifierType.LNURLW, pi.type)
+        self.assertEqual(PaymentIdentifierState.LNURLW_FINALIZE, pi.state)
+        self.assertIsNotNone(pi.lnurl_data)
+        self.assertEqual('test-k1-value', pi.lnurl_data.k1)
+        self.assertEqual('Test withdrawal', pi.lnurl_data.default_description)
+        self.assertEqual(1000, pi.lnurl_data.min_withdrawable_sat)
+        self.assertEqual(500000, pi.lnurl_data.max_withdrawable_sat)
+
+    @patch('electrum.payment_identifier.request_lnurl')
+    def test_lnurl_resolve_error(self, mock_request_lnurl):
+        """Test LNURL resolve error handling"""
+        lnurl = 'LNURL1DP68GURN8GHJ7MRWVF5HGUEWD3HXZERYWFJHXUEWVDHK6TM4WPNHYCTYV4EJ7DFCVGENSDPH8QCRZETXVGCXGCMPVFJR' \
+                  'WENP8P3NJEP3XE3NQWRPXFJR2VRRVSCX2V33V5UNVC3SXP3RXCFSVFSKVWPCV3SKZWTP8YUZ7AMFW35XGUNPWUHKZURF9AMRZT' \
+                  'MVDE6HYMP0FETHVUNZDAMHQ7JSF4RX73TZ2VU9Z3J3GVMSLCJ57F'
+
+        # Mock LNURL error
+        mock_request_lnurl.side_effect = LNURLError("Server error")
+
+        pi = PaymentIdentifier(None, lnurl)
+        self.assertTrue(pi.need_resolve())
+
+        async def run_resolve():
+            await pi._do_resolve()
+
+        asyncio.run(run_resolve())
+
+        self.assertEqual(PaymentIdentifierState.ERROR, pi.state)
+        self.assertTrue(pi.is_error())
+        self.assertIn("Server error", pi.get_error())
 
     def test_multiline(self):
         pi_str = '\n'.join([