diff --git a/staticlibs/tests/unit/src/com/android/net/module/util/CollectionUtilsTest.kt b/staticlibs/tests/unit/src/com/android/net/module/util/CollectionUtilsTest.kt
index 0886426..96648a5 100644
--- a/staticlibs/tests/unit/src/com/android/net/module/util/CollectionUtilsTest.kt
+++ b/staticlibs/tests/unit/src/com/android/net/module/util/CollectionUtilsTest.kt
@@ -61,4 +61,20 @@
         assertTrue(CollectionUtils.all(listOf(1)) { true })
         assertFalse(CollectionUtils.all(listOf(1)) { false })
     }
+
+    @Test
+    fun testContains() {
+        assertTrue(CollectionUtils.contains(shortArrayOf(10, 20, 30), 10))
+        assertTrue(CollectionUtils.contains(shortArrayOf(10, 20, 30), 30))
+        assertFalse(CollectionUtils.contains(shortArrayOf(10, 20, 30), 40))
+        assertFalse(CollectionUtils.contains(null, 10.toShort()))
+        assertTrue(CollectionUtils.contains(intArrayOf(10, 20, 30), 10))
+        assertTrue(CollectionUtils.contains(intArrayOf(10, 20, 30), 30))
+        assertFalse(CollectionUtils.contains(intArrayOf(10, 20, 30), 40))
+        assertFalse(CollectionUtils.contains(null, 10.toInt()))
+        assertTrue(CollectionUtils.contains(arrayOf("A", "B", "C"), "A"))
+        assertTrue(CollectionUtils.contains(arrayOf("A", "B", "C"), "C"))
+        assertFalse(CollectionUtils.contains(arrayOf("A", "B", "C"), "D"))
+        assertFalse(CollectionUtils.contains(null, "A"))
+    }
 }