@Test
  public void testCount() throws IOException {
    MultiArrayOutputStream maos = new MultiArrayOutputStream(2);
    for (int i = 0; i < 4; i++) {
      maos.write(i);
    }
    assertEquals(4, maos.getCount());
    assertEquals(2, maos.getIndex());

    maos = new MultiArrayOutputStream(2);
    for (int i = 0; i < 4; i++) {
      int len = 3;
      maos.write(new byte[len]);
    }
    assertEquals(12, maos.getCount());
    assertEquals(6, maos.getIndex());
  }
 @Test
 public void testArrayWrites() throws IOException {
   MultiArrayOutputStream maos = new MultiArrayOutputStream(2);
   for (int i = 0; i < 10; i++) {
     int len = 1 << i;
     maos.write(new byte[len], 0, len);
   }
   assertEquals((1 << 10) - 1, maos.getCount());
   assertEquals(1, maos.getIndex());
 }