@Test
public void testMatchingKeyMismatchingValueDoesNotMatch() {

    Map<String,String> itemtags = new HashMap<String,String>() {{
        put("one","four");
    }};
    TagFilter tf = new TagFilter("one:two");
    TagFilter.Result result = tf.matches(itemtags);
    assertThat(result.matched()).isFalse();
}