Ensure that block placements send BlockChangePacket

Signed-off-by: TheMode <themode@outlook.fr>

src/test/java/net/minestom/server/api/TestConnection.java

@@ -15,6 +15,10 @@ public interface TestConnection {
 
     <T extends ServerPacket> @NotNull PacketTracker<T> trackIncoming(@NotNull Class<T> type);
 
+    default @NotNull PacketTracker<ServerPacket> trackIncoming(){
+        return trackIncoming(ServerPacket.class);
+    }
+
     interface PacketTracker<T> {
         @NotNull List<@NotNull T> collect();
 

src/test/java/net/minestom/server/instance/InstanceBlockIntegrationTest.java

@@ -0,0 +1,31 @@
+package net.minestom.server.instance;
+
+import net.minestom.server.api.Env;
+import net.minestom.server.api.EnvTest;
+import net.minestom.server.coordinate.Pos;
+import net.minestom.server.coordinate.Vec;
+import net.minestom.server.instance.block.Block;
+import net.minestom.server.network.packet.server.play.BlockChangePacket;
+import org.junit.jupiter.api.Test;
+
+import static org.junit.jupiter.api.Assertions.assertEquals;
+
+@EnvTest
+public class InstanceBlockIntegrationTest {
+
+    @Test
+    public void playerUpdate(Env env) {
+        var instance = env.createFlatInstance();
+        var connection = env.createConnection();
+        connection.connect(instance, new Pos(0, 40, 0)).join();
+
+        var tracker = connection.trackIncoming();
+        // Replace air
+        tracker = connection.trackIncoming();
+        instance.setBlock(5, 41, 0, Block.STONE);
+        tracker.assertSingle(BlockChangePacket.class, packet -> {
+            assertEquals(new Vec(5, 41, 0), packet.blockPosition());
+            assertEquals(Block.STONE.stateId(), packet.blockStateId());
+        });
+    }
+}