1 files changed, 46 insertions, 0 deletions
diff --git a/azalea-client/tests/simulation/mine_block_without_rollback.rs b/azalea-client/tests/simulation/mine_block_without_rollback.rs
new file mode 100644
index 00000000..71f360c4
--- /dev/null
+++ b/azalea-client/tests/simulation/mine_block_without_rollback.rs
@@ -0,0 +1,46 @@
+use azalea_client::{mining::StartMiningBlockEvent, test_utils::prelude::*};
+use azalea_core::position::{BlockPos, ChunkPos};
+use azalea_protocol::packets::{
+    ConnectionProtocol,
+    game::{ClientboundBlockChangedAck, ClientboundBlockUpdate},
+};
+use azalea_registry::builtin::BlockKind;
+
+#[test]
+fn test_mine_block_without_rollback() {
+    let _lock = init();
+
+    let mut simulation = Simulation::new(ConnectionProtocol::Game);
+    simulation.receive_packet(default_login_packet());
+
+    simulation.receive_packet(make_basic_empty_chunk(ChunkPos::new(0, 0), (384 + 64) / 16));
+    simulation.tick();
+
+    let pos = BlockPos::new(1, 2, 3);
+    simulation.receive_packet(ClientboundBlockUpdate {
+        pos,
+        // tnt is used for this test because it's insta-mineable so we don't have to waste ticks
+        // waiting
+        block_state: BlockKind::Tnt.into(),
+    });
+    simulation.tick();
+    assert_eq!(simulation.get_block_state(pos), Some(BlockKind::Tnt.into()));
+
+    simulation.write_message(StartMiningBlockEvent {
+        entity: simulation.entity,
+        position: pos,
+        force: true,
+    });
+    simulation.tick();
+    assert_eq!(simulation.get_block_state(pos), Some(BlockKind::Air.into()));
+
+    // server acknowledged our change by sending a BlockUpdate + BlockChangedAck, so
+    // no rollback
+    simulation.receive_packet(ClientboundBlockUpdate {
+        pos,
+        block_state: BlockKind::Air.into(),
+    });
+    simulation.receive_packet(ClientboundBlockChangedAck { seq: 1 });
+    simulation.tick();
+    assert_eq!(simulation.get_block_state(pos), Some(BlockKind::Air.into()));
+}