Let the Unit testing begin

Could use some more test cases on the make test, though

src/test/java/com/gmail/nossr50/util/blockmeta/PrimitiveExChunkletStoreTest.java

@@ -0,0 +1,35 @@
+package com.gmail.nossr50.util.blockmeta;
+
+import static org.junit.Assert.assertEquals;
+
+import org.junit.Before;
+import org.junit.Test;
+
+public class PrimitiveExChunkletStoreTest {
+	byte addresses[][] = new byte[16][16];
+
+    @Before
+    public void populateAddresses() {
+        for(int x = 0; x < 16; x++) {
+            for(int z = 0; z < 16; z++) {
+                addresses[x][z] = PrimitiveExChunkletStore.makeAddressByte(x, z);
+            }
+        }
+    }
+
+    @Test
+    public void addressMakeTest() {
+        assertEquals(addresses[0][0], 0);
+        assertEquals(addresses[15][15], -1);
+    }
+
+    @Test
+    public void addressReverseTest() {
+        for(int x = 0; x < 16; x++) {
+            for(int z = 0; z < 16; z++) {
+                assertEquals(x, PrimitiveExChunkletStore.addressByteX(addresses[x][z]));
+                assertEquals(z, PrimitiveExChunkletStore.addressByteZ(addresses[x][z]));
+            }
+        }
+    }
+}