Implement item cachine for 26.3

tests/test_inventory_drain.py

@@ -1,10 +1,13 @@
+import io
 import unittest
 
 from munch import Munch
-from minecraft.networking.modern import ClientTickEnd
+from minecraft.networking.modern import ClientTickEnd, ContainerOpenPacket
 from minecraft.networking.packets import PacketBuffer
 
-from mosfet.game import ContainerClickDropPacket, Game
+from mosfet.game import (
+    ContainerClickDropPacket, ContainerClickQuickMovePacket, Game,
+)
 from mosfet.protocol.types import Slot
 
 
@@ -27,6 +30,24 @@ class TestInventoryDrain(unittest.TestCase):
         self.assertEqual(payload.get_writable(), bytes.fromhex(
             '0007002d01040000'))
 
+    def test_quick_move_packet_encodes_shift_click(self):
+        packet = ContainerClickQuickMovePacket(
+            container_id=3, state_id=7, slot=42)
+        payload = PacketBuffer()
+        packet.write_fields(payload)
+
+        self.assertEqual(packet.id, 0x12)
+        self.assertEqual(payload.get_writable(), bytes.fromhex(
+            '0307002a00010000'))
+
+    def test_open_window_packet_decodes_container_metadata(self):
+        # window id, menu type, empty anonymous-NBT title
+        packet = ContainerOpenPacket()
+        packet.read(io.BytesIO(bytes.fromhex('010200')))
+        self.assertEqual(packet.window_id, 1)
+        self.assertEqual(packet.inventory_type, 2)
+        self.assertIsNone(packet.title)
+
     def test_drain_waits_for_authoritative_slot_update(self):
         connection = FakeConnection()
         game = Game.__new__(Game)