Advance world clock between updates

tests/test_sleep_with_bed.py

@@ -1,6 +1,7 @@
 import io
 import unittest
 from contextlib import redirect_stdout
+from unittest.mock import patch
 
 from munch import Munch
 from minecraft.networking.packets import PacketBuffer
@@ -96,6 +97,33 @@ class TestSleepWithBed(unittest.TestCase):
             'partial_tick': 0.5, 'rate': 1.0,
         }])
 
+    def test_game_advances_world_clock_between_server_updates(self):
+        game = Game.__new__(Game)
+        game.g = Munch(
+            time_base=None, time_update_received_at=None, clock_rate=1.0,
+            time=0.0,
+            connection=Munch(registry_ids={'minecraft:world_clock': {
+                'minecraft:the_end': 1,
+                'minecraft:overworld': 0,
+            }}),
+            dimension='overworld')
+        packet = Munch(age=900000, clock_updates=[
+            {'clock_id': 1, 'total_ticks': 6000,
+             'partial_tick': 0.0, 'rate': 1.0},
+            {'clock_id': 0, 'total_ticks': 13000,
+             'partial_tick': 0.5, 'rate': 1.0},
+        ])
+
+        with patch('mosfet.game.time.monotonic', return_value=100.0):
+            game.handle_time_update(packet)
+            self.assertEqual(game.g.time, 13000.5)
+            self.assertEqual(game.g.clock_name, 'minecraft:overworld')
+
+        with patch('mosfet.game.time.monotonic', return_value=100.5):
+            game._advance_world_time()
+
+        self.assertEqual(game.g.time, 13010.5)
+
     def test_player_command_encodes_stop_sleeping(self):
         packet = PlayerCommandPacket(
             entity_id=7, action_id=0, jump_boost=0)