fix: preserve xpd role platform in wallet queries

tests/test_douyu_xpd_exchange.py

@@ -1,4 +1,5 @@
 import json
+import re
 import unittest
 from types import SimpleNamespace
 from unittest.mock import Mock
@@ -47,6 +48,29 @@ class XpdExchangeTests(unittest.TestCase):
             'paytype': 1,
         })
 
+    def test_role_and_balance_preserve_ios_platform_zero(self):
+        self.client._request = Mock(return_value=SimpleNamespace(
+            text=(
+                'var info={"gameOpenId":"openid-ios","roleId":"role-ios",'
+                '"roleName":"iOS角色","type":"wx","platId":0,"area":1};'
+            ),
+        ))
+        role = self.client.xpd_get_role(embed_query={}, act_id='46195', rid='9263298')
+        self.assertEqual(role['plat_id'], '0')
+        self.assertEqual(role['area'], '1')
+
+        self.client._request = Mock(return_value=SimpleNamespace(
+            text='var banlanceInfo={"ret":0,"balance":2199};',
+        ))
+        result = self.client.xpd_balance(
+            embed_query={}, act_id='46195', openid='openid-ios',
+            roleid='role-ios', plat='0', areaid='1',
+        )
+        params = self.client._request.call_args.kwargs['params']
+        self.assertEqual(params['plat'], '0')
+        self.assertTrue(re.fullmatch(r'\d{13}', params['_time']))
+        self.assertEqual(result['balance'], 2199)
+
     def test_exchange_surfaces_daoju_failure_message(self):
         self.client._request = Mock(return_value=SimpleNamespace(
             text='var buyInfo={"ret":"-1","msg":"点券不足"};',