@Test void testContainsElement() { assertFalse(Util.containsElement(null, "abcd")); assertFalse(Util.containsElement(1234, "abcd")); assertFalse(Util.containsElement("abcd", null)); assertTrue(Util.containsElement("abcd", "bc")); assertFalse(Util.containsElement("abcd", "xx")); assertTrue(Util.containsElement(coll, "abcd")); assertFalse(Util.containsElement(coll, "xx")); assertTrue(Util.containsElement(iterator, "abcd")); assertFalse(Util.containsElement(iterator, "xx")); assertTrue(Util.containsElement(map, "abcd")); assertFalse(Util.containsElement(map, "xx")); assertTrue(Util.containsElement(array, 1)); assertFalse(Util.containsElement(array, 10)); ArrayEnumeration<Integer> ae = new ArrayEnumeration<>(array); assertTrue(Util.containsElement(ae, 1)); assertFalse(Util.containsElement(ae, 10));