@Test public void testEntrySet() throws Exception { final Object h1 = new Object(); final Object h2 = new Object(); final Object h3 = new Object(); final UriPatternMatcher<Object> matcher = new UriPatternMatcher<>(); Assert.assertEquals(0, matcher.entrySet().size()); matcher.register("/h1", h1); Assert.assertEquals(1, matcher.entrySet().size()); matcher.register("/h2", h2); Assert.assertEquals(2, matcher.entrySet().size()); matcher.register("/h3", h3); Assert.assertEquals(3, matcher.entrySet().size()); }