diff --git a/proto_1.12.2/src/test/java/mc/core/network/proto_1_12_2/packets/ChunkdataPacketTest.java b/proto_1.12.2/src/test/java/mc/core/network/proto_1_12_2/packets/ChunkdataPacketTest.java
index 5060676..18dbac9 100644
--- a/proto_1.12.2/src/test/java/mc/core/network/proto_1_12_2/packets/ChunkdataPacketTest.java
+++ b/proto_1.12.2/src/test/java/mc/core/network/proto_1_12_2/packets/ChunkdataPacketTest.java
@@ -1,6 +1,5 @@
 package mc.core.network.proto_1_12_2.packets;
 
-import com.google.common.io.ByteStreams;
 import mc.core.network.proto_1_12_2.ByteArrayOutputNetStream;
 import mc.core.world.Biome;
 import mc.core.world.World;
@@ -9,6 +8,7 @@ import mc.core.world.block.BlockFactory;
 import mc.core.world.block.BlockType;
 import mc.core.world.chunk.Chunk;
 import mc.core.world.chunk.ChunkSection;
+import org.apache.commons.io.IOUtils;
 import org.junit.jupiter.api.BeforeAll;
 import org.junit.jupiter.api.BeforeEach;
 import org.junit.jupiter.api.Test;
@@ -18,6 +18,7 @@ import java.io.InputStream;
 
 import static org.junit.jupiter.api.Assertions.assertArrayEquals;
 import static org.junit.jupiter.api.Assertions.assertEquals;
+import static org.junit.jupiter.api.Assertions.assertNotNull;
 import static org.mockito.Matchers.anyInt;
 import static org.mockito.Mockito.mock;
 import static org.mockito.Mockito.when;
@@ -29,51 +30,61 @@ class ChunkdataPacketTest {
     @BeforeAll
     static void beforeClassTest() throws IOException {
         InputStream inputStream = ChunkdataPacketTest.class.getResourceAsStream("ChunkDataPacket.bin");
-        expectedPacketData = ByteStreams.toByteArray(inputStream);
+        assertNotNull(inputStream);
+        expectedPacketData = IOUtils.toByteArray(inputStream);
+        assertEquals(12571, expectedPacketData.length);
+    }
+
+    private ChunkSection createChunkSection(int height) {
+        final ChunkSection chunkSection = mock(ChunkSection.class);
+        when(chunkSection.getBiomeLocal(anyInt(), anyInt())).thenReturn(Biome.PLAINS);
+        when(chunkSection.getSkyLightLocal(anyInt(), anyInt(), anyInt())).thenReturn(0);
+        when(chunkSection.getY()).thenReturn(height);
+
+        if (height == 0) {
+            when(chunkSection.getBlockLocal(anyInt(), anyInt(), anyInt())).thenAnswer(invocation -> {
+                Object[] args = invocation.getArguments();
+                int x = (int) args[0];
+                int y = (int) args[1];
+                int z = (int) args[2];
+
+                BlockFactory blockFactory = new BlockFactory();
+
+                if (y == 0) return blockFactory.create(BlockType.BEDROCK, x, y, z);
+                else return blockFactory.create(BlockType.DIRT, x, y, z);
+            });
+        } else {
+            when(chunkSection.getBlockLocal(anyInt(), anyInt(), anyInt())).thenAnswer(invocation -> {
+                Object[] args = invocation.getArguments();
+                int x = (int) args[0];
+                int y = (int) args[1];
+                int z = (int) args[2];
+
+                BlockFactory blockFactory = new BlockFactory();
+
+                if (y < 15) return blockFactory.create(BlockType.DIRT, x, y, z);
+                else return blockFactory.create(BlockType.GRASS, x, y, z);
+            });
+        }
+
+        return chunkSection;
     }
 
     @BeforeEach
     void prepareWorld() {
-        final ChunkSection chunkSection = mock(ChunkSection.class);
-        when(chunkSection.getSkyLight(anyInt(), anyInt(), anyInt())).thenAnswer(invocation -> {
-            int y = (int)invocation.getArguments()[1];
+        final ChunkSection chunkSection0 = createChunkSection(0);
+        final ChunkSection chunkSection1 = createChunkSection(1);
 
-            if (y <= 3) return 0;
-            else return 15;
-        });
-        when(chunkSection.getBiome(anyInt(), anyInt())).thenReturn(Biome.PLAINS);
-        when(chunkSection.getBlock(anyInt(), anyInt(), anyInt())).thenAnswer(invocation -> {
-            Object[] args = invocation.getArguments();
-            int x = (int) args[0];
-            int y = (int) args[1];
-            int z = (int) args[2];
-
-            BlockFactory blockFactory = new BlockFactory();
-
-            if (y == 0) return blockFactory.create(BlockType.BEDROCK, x, y, z);
-            else if (y >= 1 && y <= 2) return blockFactory.create(BlockType.DIRT, x, y, z);
-            else if (y == 3) return blockFactory.create(BlockType.GRASS, x, y, z);
-            else return blockFactory.create(BlockType.AIR, x, y, z);
-        });
+        final Chunk chunk = mock(Chunk.class);
+        when(chunk.getX()).thenReturn(0);
+        when(chunk.getZ()).thenReturn(0);
+        when(chunk.getBiomeLocal(anyInt(), anyInt())).thenReturn(Biome.PLAINS);
+        when(chunk.getChunkSection(0)).thenReturn(chunkSection0);
+        when(chunk.getChunkSection(1)).thenReturn(chunkSection1);
 
         world = mock(World.class);
         when(world.getWorldType()).thenReturn(WorldType.FLAT);
-        when(world.getChunk(anyInt(), anyInt())).thenAnswer(invocation -> {
-            Object[] args = invocation.getArguments();
-
-            Chunk chunk = mock(Chunk.class);
-            when(chunk.getX()).thenReturn((int) args[0]);
-            when(chunk.getZ()).thenReturn((int) args[1]);
-            when(chunk.getBiome(anyInt(), anyInt())).thenReturn(Biome.PLAINS);
-            when(chunk.getChunkSection(anyInt())).thenAnswer(invocation1 -> {
-                int height = (int)invocation1.getArguments()[0];
-
-                if (height < 1) return chunkSection;
-                else return null;
-            });
-
-            return chunk;
-        });
+        when(world.getChunk(0, 0)).thenReturn(chunk);
     }
 
     @Test
diff --git a/proto_1.12.2/src/test/resources/mc/core/network/proto_1_12_2/packets/ChunkDataPacket.bin b/proto_1.12.2/src/test/resources/mc/core/network/proto_1_12_2/packets/ChunkDataPacket.bin
index fcfd0c0..d0acd42 100644
Binary files a/proto_1.12.2/src/test/resources/mc/core/network/proto_1_12_2/packets/ChunkDataPacket.bin and b/proto_1.12.2/src/test/resources/mc/core/network/proto_1_12_2/packets/ChunkDataPacket.bin differ