### Question:
GlusterOpenOption { public static GlusterOpenOption READ() { GlusterOpenOption o = new GlusterOpenOption(); o.value = O_RDONLY; o.options.add("read"); return o; }  static GlusterOpenOption READ(); static GlusterOpenOption WRITE(); static GlusterOpenOption READWRITE(); GlusterOpenOption create(); GlusterOpenOption createNew(); GlusterOpenOption truncate(); GlusterOpenOption append(); GlusterOpenOption dsync(); GlusterOpenOption sync(); @JniField(flags = {FieldFlag.CONSTANT})
    static int O_APPEND; @JniField(flags = {FieldFlag.CONSTANT})
    static int O_SYNC; @JniField(flags = {FieldFlag.CONSTANT})
    static int O_DSYNC; @JniField(flags = {FieldFlag.CONSTANT})
    static int O_TRUNC; @JniField(flags = {FieldFlag.CONSTANT})
    static int O_RDONLY; @JniField(flags = {FieldFlag.CONSTANT})
    static int O_WRONLY; @JniField(flags = {FieldFlag.CONSTANT})
    static int O_RDWR; @JniField(flags = {FieldFlag.CONSTANT})
    static int O_CREAT; @JniField(flags = {FieldFlag.CONSTANT})
    static int O_EXCL; }### Answer:
@Test public void testRead() { GlusterOpenOption openOption = GlusterOpenOption.READ(); openOption.append().create().createNew().dsync().sync().truncate(); assertEquals(rd | all, openOption.getValue()); }