@Test public void testGetCacheKey() { SelectorDimFilter selectorDimFilter = new SelectorDimFilter("abc", "d", null); SelectorDimFilter selectorDimFilter2 = new SelectorDimFilter("ab", "cd", null); Assert.assertFalse(Arrays.equals(selectorDimFilter.getCacheKey(), selectorDimFilter2.getCacheKey())); RegexDimExtractionFn regexFn = new RegexDimExtractionFn(".*", false, null); SelectorDimFilter selectorDimFilter3 = new SelectorDimFilter("abc", "d", regexFn); Assert.assertFalse(Arrays.equals(selectorDimFilter.getCacheKey(), selectorDimFilter3.getCacheKey())); }