diff --git a/src/test_/java/CollisionCheckerTest.java b/src/test_/java/CollisionCheckerTest.java
index 0f4dfd5..0fdf316 100644
--- a/src/test_/java/CollisionCheckerTest.java
+++ b/src/test_/java/CollisionCheckerTest.java
@@ -85,4 +85,15 @@ public class CollisionCheckerTest {
         //assert
         assertTrue(result);
     }
+    @Test
+    void WhenBallXCoordinateIsMoreThanZero_didTouchLeftEdge_ReturnsTrue() {
+        // arrange
+        Integer ballXCoordinate = 10;
+
+        //act
+        Boolean result = collisionChecker.didTouchLeftEdge(ballXCoordinate);
+
+        //assert
+        assertFalse(result);
+    }
 }