Better IO

tests/src/test/java/IOTests.java

@@ -1,14 +1,23 @@
 import arc.util.*;
+import arc.util.io.*;
+import mindustry.content.*;
 import mindustry.game.*;
+import mindustry.gen.*;
 import mindustry.io.*;
 import org.junit.jupiter.api.*;
 
+import java.io.*;
 import java.nio.*;
 
 import static org.junit.jupiter.api.Assertions.*;
 
 public class IOTests{
 
+    @Test
+    void writeEntities(){
+        //TODO
+    }
+
     @Test
     void writeEnglish(){
         ByteBuffer buffer = ByteBuffer.allocate(500);