public static boolean isWindows() {
        return IS_WINDOWS;
    }
@Test
    public void isWindows() {
        String osName = System.getProperty("os.name").toLowerCase();
        Assert.assertEquals(osName.contains("windows"), SystemInfo.isWindows());
        Assert.assertEquals(osName.contains("linux"), SystemInfo.isLinux());
        Assert.assertEquals(osName.contains("mac"), SystemInfo.isMac());
    }