diff --git a/core-java-modules/core-java-collections-array-list-2/src/test/java/com/baeldung/peakelements/SinglePeakFinderUnitTest.java b/core-java-modules/core-java-collections-array-list-2/src/test/java/com/baeldung/peakelements/SinglePeakFinderUnitTest.java
index f2448ec255..9e4cea2c0e 100644
--- a/core-java-modules/core-java-collections-array-list-2/src/test/java/com/baeldung/peakelements/SinglePeakFinderUnitTest.java
+++ b/core-java-modules/core-java-collections-array-list-2/src/test/java/com/baeldung/peakelements/SinglePeakFinderUnitTest.java
@@ -21,4 +21,12 @@ public class SinglePeakFinderUnitTest {
         OptionalInt peak = SinglePeakFinder.findSinglePeak(arr);
         assertTrue(peak.isEmpty());
     }
+
+    @Test
+    void findSinglePeak_givenEqualElementArray_thenReturnsCorrectPeak() {
+        int[] arr = {-2, -2, -2, -2, -2};
+        OptionalInt peak = SinglePeakFinder.findSinglePeak(arr);
+        assertTrue(peak.isPresent());
+        assertEquals(-2, peak.getAsInt());
+    }
 }