@Test
    public void testTruncateNothingInCommon() {
        final List<CharSequence> dirs = new ArrayList<>();
        dirs.add("/one/directory/files");
        dirs.add("/some/other/directory");

        final List<CharSequence> truncated = Formatter.truncateCommonSubdir(dirs);
        assertThat(truncated.get(0)).isEqualTo("/one/directory/files");
        assertThat(truncated.get(1)).isEqualTo("/some/other/directory");
    }
The pattern we get from {@link Formatter#getShortDateFormat()} should be the one used by {@link Formatter#formatShortDate(long)}.
main/src/androidTest/java/cgeo/geocaching/utils/FormatterTest.java