Find chest openings within interaction range

tests/test_sneak_placement.py

@@ -2,7 +2,9 @@ import unittest
 from munch import Munch
 
 from minecraft.networking.modern import ClientTickEnd, UseItemOnBlockPacket
+from minecraft.networking.types import BlockFace
 from mosfet.game import Game
+from mosfet.info import blocks
 from mosfet.protocol.modern import PlayerInputPacket
 
 
@@ -15,6 +17,28 @@ class FakeConnection:
 
 
 class SneakPlacementTests(unittest.TestCase):
+    def test_open_container_sends_visible_face_and_hit_cursor(self):
+        chest = (2, 65, -4)
+        connection = FakeConnection()
+        game = Game.__new__(Game)
+        game.g = Munch(
+            connection=connection,
+            chunks=Munch(get_block_at=lambda *position:
+                         min(blocks.CHEST_IDS) if tuple(position) == chest
+                         else None),
+            world=Munch())
+        game.sequence = 0
+
+        game.open_container(
+            chest, face=BlockFace.EAST, cursor=(0.9375, 0.5, 0.5))
+
+        packet = next(packet for packet, _force in connection.packets
+                      if isinstance(packet, UseItemOnBlockPacket))
+        self.assertEqual(packet.location, chest)
+        self.assertEqual(packet.face, BlockFace.EAST)
+        self.assertEqual((packet.cursor_x, packet.cursor_y, packet.cursor_z),
+                         (0.9375, 0.5, 0.5))
+
     def test_sneaking_wraps_block_placement_and_is_released(self):
         connection = FakeConnection()
         game = Game.__new__(Game)