@Test
  public void testRegisterFilter() {
    ParseFilter.registerFilter("MyFilter", "some.class");

    assertTrue(f.getSupportedFilters().contains("MyFilter"));
  }
This class tests ParseFilter.java It tests the entire work flow from when a string is given by
the user and how it is parsed to construct the corresponding Filter object
hbase-server/src/test/java/org/apache/hadoop/hbase/filter/TestParseFilter.java