diff --git a/src/test/java/de/hsel/spm/baudas/analysis/ClusterTest.java b/src/test/java/de/hsel/spm/baudas/analysis/ClusterTest.java
index 2711fa6..8eddd85 100644
--- a/src/test/java/de/hsel/spm/baudas/analysis/ClusterTest.java
+++ b/src/test/java/de/hsel/spm/baudas/analysis/ClusterTest.java
@@ -11,10 +11,16 @@ import java.util.concurrent.atomic.AtomicReference;
 import static org.junit.jupiter.api.Assertions.assertEquals;
 import static org.junit.jupiter.api.Assertions.assertTimeout;
 
-public class ClusterTest {
+/**
+ * test for Cluster Analysis.
+ *
+ * @author Julian Hinxlage
+ * @version 0.1
+ */
+class ClusterTest {
 
     @Test
-    public void test100() {
+    void test100() {
         URL url = getClass().getClassLoader().getResource("kd100.csv");
         assert url != null;
 
@@ -22,6 +28,35 @@ public class ClusterTest {
 
         AtomicReference<Map<Integer, Map<String, String>>> results = new AtomicReference<>();
 
+
+        assertTimeout(Duration.ofMillis(2000), () -> results.set(cluster.getResult()));
+
+        assertEquals("m", results.get().get(0).get("Geschlecht"));
+    }
+
+    @Test
+    void test1000() {
+        URL url = getClass().getClassLoader().getResource("kd1000.csv");
+        assert url != null;
+
+        Cluster cluster = new Cluster(new File(url.getFile()));
+
+        AtomicReference<Map<Integer, Map<String, String>>> results = new AtomicReference<>();
+
+        assertTimeout(Duration.ofMillis(2000), () -> results.set(cluster.getResult()));
+
+        assertEquals("m", results.get().get(0).get("Geschlecht"));
+    }
+
+    @Test
+    void test10000() {
+        URL url = getClass().getClassLoader().getResource("kd10000.csv");
+        assert url != null;
+
+        Cluster cluster = new Cluster(new File(url.getFile()));
+
+        AtomicReference<Map<Integer, Map<String, String>>> results = new AtomicReference<>();
+
         assertTimeout(Duration.ofMillis(2000), () -> results.set(cluster.getResult()));
 
         assertEquals("m", results.get().get(0).get("Geschlecht"));