diff --git a/src/test_/java/CollisionCheckerTest.java b/src/test_/java/CollisionCheckerTest.java
index 0fdf316..9ba64c5 100644
--- a/src/test_/java/CollisionCheckerTest.java
+++ b/src/test_/java/CollisionCheckerTest.java
@@ -96,4 +96,16 @@ public class CollisionCheckerTest {
         //assert
         assertFalse(result);
     }
+    @Test
+    void WhenBallXCoordinateIsMoreOrEqualToMaxWidth_didTouchRightEdge_ReturnsTrue() {
+        // arrange
+        Integer ballXCoordinate = 124;
+        Integer maxWidth = 123;
+
+        // act
+        Boolean result = collisionChecker.didTouchRightEdge(ballXCoordinate, maxWidth);
+
+        //assert
+        assertTrue(result);
+    }
 }