Pattern pattern = Pattern.compile(WEB_FILE_RULE_PATTERN);
        assertFalse(pattern.matcher("text/html").matches());
    }

    @Test
    public void test_webFileRulePattern_doesNotMatchImageTypes() {
        Pattern pattern = Pattern.compile(WEB_FILE_RULE_PATTERN);
        assertFalse(pattern.matcher("image/jpeg").matches());
        assertFalse(pattern.matcher("image/png").matches());