diff --git a/test/LifeTest.java b/test/LifeTest.java
index 346fbd3..020f2c1 100644
--- a/test/LifeTest.java
+++ b/test/LifeTest.java
@@ -22,17 +22,42 @@ public class LifeTest {
 
     @Test
     public void destroyLonelyCell() {
-        
+      Life l = new Life();
+      l.setAlive(1,1);
+
+      ILife nextGen = l.nextGeneration();
+
+      assertFalse(nextGen.isAlive(1,1));
     }
 
 
     @Test
     public void keepAliveCell() {
+        Life l = new Life();
+
+        l.setAlive(1,1);
+        l.setAlive(1,2);
+        l.setAlive(2,1);
+
+        ILife nextGen = l.nextGeneration();
+
+        assertTrue(nextGen.isAlive(1,1));
     }
 
 
     @Test
     public void destroyCrowdedCell() {
+        Life l = new Life();
+
+        l.setAlive(2,1);
+        l.setAlive(1,1);
+        l.setAlive(1,2);
+        l.setAlive(2,2);
+        l.setAlive(3,1);
+
+        ILife nextGen = l.nextGeneration();
+
+        assertFalse(nextGen.isAlive(2,1));
     }