private void testSingle(final Action1<Geocache> cacheSetter, final Action1<StringGeocacheFilter> filterSetter, final Boolean expectedResult) {
        GeocacheFilterTestUtils.testSingle(GeocacheFilterType.NAME, cacheSetter, filterSetter, expectedResult);
    }
This class tests the string filters, using NAME filter as an example
main/src/androidTest/java/cgeo/geocaching/filters/StringGeocacheFilterTest.java