final File file = tempFolder.newFile("hoge.properties");
        final Writer writer = WriterUtil.create(file);
        PropertiesUtil.store(outProperties, writer, "comments");
        CloseableUtil.close(writer);
        final Properties properties = new Properties();
        PropertiesUtil.load(properties, file);
        assertThat(properties.getProperty("a"), is("A"));
    }

    /**

        String revision = request.getUserProperties().getProperty("revision");
        assertEquals("8.2.0", revision);

        assertEquals("bar ", request.getUserProperties().getProperty("foo"));
        assertEquals("bar two", request.getUserProperties().getProperty("foo2"));
        assertEquals("Apache Maven", request.getUserProperties().getProperty("label"));

        assertEquals("fff", s36, "7");
        String s35 = props2.getProperty("g");
        assertEquals("g", s35, "8");
        String s34 = props2.getProperty("h h");
        assertEquals("", s34, "9");
        String s33 = props2.getProperty(" ");
        assertEquals("i=i", s33, "10");
        String s32 = props2.getProperty("j");
        assertEquals("   j", s32, "11");

        version.append(reduce(properties.getProperty("distributionShortName") + " home: "
                        + System.getProperty("maven.home", "<unknown Maven " + "home>")))
                .append(ls);
        version.append("Java version: ")
                .append(System.getProperty("java.version", "<unknown Java version>"))
                .append(", vendor: ")
                .append(System.getProperty("java.vendor", "<unknown vendor>"))

        // update java.io.tmpdir
        final String tempPath = System.getProperty(FESS_TEMP_PATH);
        if (tempPath != null) {
            System.setProperty(JAVA_IO_TMPDIR, tempPath);
        }

        final TomcatBoot tomcatBoot = new FessBoot(getPort(), getContextPath()) //
                .useTldDetect(); // for JSP
        final String varPath = System.getProperty(FESS_VAR_PATH);
        if (varPath != null) {

                return getResourcePath(getProperty(SPNEGO_LOGIN_CONF, "auth_login.conf"));
            }
            if (SpnegoHttpFilter.Constants.KRB5_CONF.equals(name)) {
                return getResourcePath(getProperty(SPNEGO_KRB5_CONF, "krb5.conf"));
            }
            if (SpnegoHttpFilter.Constants.CLIENT_MODULE.equals(name)) {
                return getProperty(SPNEGO_LOGIN_CLIENT_MODULE, "spnego-client");

        assertEquals("jar", depArtifact.getExtension());
        assertEquals("java", depArtifact.getProperty("language", null));
        assertEquals("jar", depArtifact.getProperty("type", null));
        assertEquals("true", depArtifact.getProperty("constitutesBuildPath", null));
        assertEquals("false", depArtifact.getProperty("includesDependencies", null));
        assertEquals(4, depArtifact.getProperties().size());

    private static final String TEST_TOKEN = "test.token";

    public static String getTestToken() {
        return System.getProperty(TEST_TOKEN, DEFAULT_TEST_TOKEN);
    }

    public static String settingTestToken() {
        final String testToken = System.getProperty(TEST_TOKEN);
        if (testToken != null) {
            logger.info("Token: {}", testToken);
            return testToken;
        }

     */
    public static final String PATH_SEPARATOR = System.getProperty("path.separator");

    /**
     * <code>os.name</code> システムプロパティ。例:<code>Mac OS X</code>
     */
    public static final String OS_NAME = System.getProperty("os.name");

    /**
     * <code>java.io.tmpdir</code> システムプロパティ。例：/tmp
     */
    public static final String JAVA_IO_TMPDIR = System.getProperty("java.io.tmpdir");

    /**

        MavenPropertiesLoader.loadProperties(p, mavenUserProps, p::getProperty, false);
        assertEquals("bar", p.getProperty("foo"));
        assertNull(p.getProperty("foo-env"));

        p = new Properties();
        p.put("user.home", userDirectory.toString());
        p.put("env.envName", "ci");
        MavenPropertiesLoader.loadProperties(p, mavenUserProps, p::getProperty, false);
        assertEquals("bar-env", p.getProperty("foo"));