}

    public void test_getUserAgentType_emptyUserAgent() {
        getMockRequest().addHeader("user-agent", "");
        assertEquals(UserAgentType.OTHER, userAgentHelper.getUserAgentType());
    }

    public void test_getUserAgentType_noUserAgentHeader() {
        assertEquals(UserAgentType.OTHER, userAgentHelper.getUserAgentType());
    }

            public UserAgentType getUserAgentType() {
                return UserAgentType.IE;
            }
        };
        ComponentUtil.register(userAgentHelper, "userAgentHelper");

        assertEquals("file://test.txt", viewHelper.updateFileProtocol("file:///test.txt"));

        userAgentHelper = new UserAgentHelper() {
            public UserAgentType getUserAgentType() {

     * and caches the result in the request attribute for subsequent calls.
     *
     * @return the detected user agent type, or OTHER if no specific type is detected
     */
    public UserAgentType getUserAgentType() {
        return LaRequestUtil.getOptionalRequest().map(request -> {
            UserAgentType uaType = (UserAgentType) request.getAttribute(USER_AGENT_TYPE);
            if (uaType == null) {

        final int pos = url.indexOf(':', 5);
        final boolean isLocalFile = pos > 0 && pos < 12;

        final UserAgentType ua = ComponentUtil.getUserAgentHelper().getUserAgentType();
        final DynamicProperties systemProperties = ComponentUtil.getSystemProperties();
        switch (ua) {
        case IE:
            if (isLocalFile) {