diff --git a/test/jrummikub/model/PositionTest.java b/test/jrummikub/model/PositionTest.java
index 2812f9c..1f7ca5f 100644
--- a/test/jrummikub/model/PositionTest.java
+++ b/test/jrummikub/model/PositionTest.java
@@ -6,14 +6,24 @@ import java.util.Set;
 import org.junit.*;
 import static org.junit.Assert.*;
 
+/**
+ * test functions of Position-Class
+ * 
+ */
 public class PositionTest {
 
+	/**
+	 * String for debugging and testing
+	 */
 	@Test
 	public void testToString() {
 		Position pos = new Position(6, 2);
 		assertEquals("Position[x=6.0,y=2.0]", pos.toString());
 	}
 
+	/**
+	 * tests hashing
+	 */
 	@Test
 	public void testEqualsAndHashCode() {
 		Position pos1 = new Position(0, 0);
diff --git a/test/jrummikub/model/StoneSetTest.java b/test/jrummikub/model/StoneSetTest.java
index 2575f22..e2962d4 100644
--- a/test/jrummikub/model/StoneSetTest.java
+++ b/test/jrummikub/model/StoneSetTest.java
@@ -175,6 +175,9 @@ public class StoneSetTest {
 		assertEquals(i, testSet.size());
 	}
 
+	/**
+	 * String for Testing
+	 */
 	@Test
 	public void testToString() {
 		StoneSet testSet = new StoneSet(Arrays.asList(new Stone(2, BLUE),