parameters = "";
        parameterMap = ParameterUtil.parse(parameters);
        assertEquals(0, parameterMap.size());

        parameters = "domain";
        parameterMap = ParameterUtil.parse(parameters);
        assertEquals(1, parameterMap.size());
        assertEquals("", parameterMap.get("domain"));

        parameters = "domain=";
        parameterMap = ParameterUtil.parse(parameters);
        assertEquals(1, parameterMap.size());

        PrunedTag[] tags = PrunedTag.parse("");
        assertEquals(0, tags.length);

        // Test null
        tags = PrunedTag.parse(null);
        assertEquals(0, tags.length);

        // Test whitespace only
        tags = PrunedTag.parse("   ");
        assertEquals(0, tags.length);

        // Test commas only
        tags = PrunedTag.parse(",,,");
        assertEquals(0, tags.length);

        .addEqualityGroup(parse(""), parse(""))
        .addEqualityGroup(parse("concurrencyLevel=7"), parse("concurrencyLevel=7"))
        .addEqualityGroup(parse("concurrencyLevel=15"), parse("concurrencyLevel=15"))
        .addEqualityGroup(parse("initialCapacity=7"), parse("initialCapacity=7"))
        .addEqualityGroup(parse("initialCapacity=15"), parse("initialCapacity=15"))
        .addEqualityGroup(parse("maximumSize=7"), parse("maximumSize=7"))

  @Test fun invalidCharacters() {
    assertThat(parse(url, "a\u0000b=cd")).isNull()
    assertThat(parse(url, "ab=c\u0000d")).isNull()
    assertThat(parse(url, "a\u0001b=cd")).isNull()
    assertThat(parse(url, "ab=c\u0001d")).isNull()
    assertThat(parse(url, "a\u0009b=cd")).isNull()
    assertThat(parse(url, "ab=c\u0009d")).isNull()
    assertThat(parse(url, "a\u001fb=cd")).isNull()
    assertThat(parse(url, "ab=c\u001fd")).isNull()

            MediaType.parse("text/plain; charset=UTF-8"),
            MediaType.parse("text/plain ; charset=utf-8"),
            MediaType.parse("text/plain; charset =UTF-8"),
            MediaType.parse("text/plain; charset= UTF-8"),
            MediaType.parse("text/plain; charset  =  UTF-8"),
            MediaType.parse("text/plain; charset=\tUTF-8"))

        .addEqualityGroup(parse(""), parse(""))
        .addEqualityGroup(parse("concurrencyLevel=7"), parse("concurrencyLevel=7"))
        .addEqualityGroup(parse("concurrencyLevel=15"), parse("concurrencyLevel=15"))
        .addEqualityGroup(parse("initialCapacity=7"), parse("initialCapacity=7"))
        .addEqualityGroup(parse("initialCapacity=15"), parse("initialCapacity=15"))
        .addEqualityGroup(parse("maximumSize=7"), parse("maximumSize=7"))

     * The query is processed through the filter chain before being parsed.
     *
     * @param query the query string to parse
     * @return the parsed Query object
     * @throws QueryParseException if the query cannot be parsed
     */
    public Query parse(final String query) {
        return filterChain.parse(query);
    }

    /**
     * Creates a new Lucene query parser with the current configuration.

        try {
            // parse(String)
            Method parseMethod = KuromojiCSVUtil.class.getMethod("parse", String.class);
            assertTrue("parse should be static", java.lang.reflect.Modifier.isStatic(parseMethod.getModifiers()));
            assertTrue("parse should be public", java.lang.reflect.Modifier.isPublic(parseMethod.getModifiers()));

                }
                if (values.length > 1) {
                    cb.query().setUpdatedAt_LessEqual(LocalDateTime.parse(values[1], formatter));
                }
            } catch (final Exception e) {
                if (logger.isDebugEnabled()) {
                    logger.debug("Failed to parse {}", pager.requestedTimeRange, e);
                }

        String invalidXml = "<?xml version=\"1.0\"?><invalid><test/></invalid>";

        try {
            parser.parse(new InputSource(new StringReader(invalidXml)));
            fail("Should throw GsaConfigException");
        } catch (GsaConfigException e) {
            assertEquals("Failed to parse XML file.", e.getMessage());
        }
    }

    public void test_parseWithMalformedXml() {