fix unpacking of REAL_RESULT and adjust assertion

pymysqlreplication/event.py

@@ -522,7 +522,7 @@ def _read_string(self):
         return self.packet.read(self.value_len).decode()
 
     def _read_real(self):
-        return str(struct.unpack('d', self.packet.read(8))[0])
+        return struct.unpack('<d', self.packet.read(8))[0]
 
     def _read_int(self):
         return str(self.packet.read_uint_by_size(self.value_len))

pymysqlreplication/tests/test_basic.py

@@ -1061,7 +1061,7 @@ def test_user_var_real_event(self):
         self.assertIsInstance(expected_user_var_event, UserVarEvent)
         self.assertIsInstance(expected_user_var_event.name_len, int)
         self.assertEqual(expected_user_var_event.name, "test_user_var")
-        self.assertIsInstance(expected_user_var_event.value, str)
+        self.assertIsInstance(expected_user_var_event.value,float)
         self.assertEqual(expected_user_var_event.is_null, 0)
         self.assertEqual(expected_user_var_event.type, 1)
         self.assertEqual(expected_user_var_event.charset, 33)