assertFalse(AdminLogAction.isLogFilename("config.xml"));
        assertFalse(AdminLogAction.isLogFilename("data.json"));
    }

    @Test
    public void test_isLogFilename_withNoExtension() {
        assertFalse(AdminLogAction.isLogFilename("fess"));
        assertFalse(AdminLogAction.isLogFilename("log"));
    }

    @Test
    public void test_isLogFilename_withOnlyExtension() {