@Test
public void prefixTest() { // prefix b/c symbol is prefixed

    BtcFormat usFormat = BtcFormat.getSymbolInstance(Locale.US);
    assertEquals("Đ1.00", usFormat.format(COIN));
    assertEquals("Đ1.01", usFormat.format(101000000));
    assertEquals("₥Đ0.01", usFormat.format(1000));
    assertEquals("₥Đ1,011.00", usFormat.format(101100000));
    assertEquals("₥Đ1,000.01", usFormat.format(100001000));
    assertEquals("µĐ1,000,001.00", usFormat.format(100000100));
    assertEquals("µĐ1,000,000.10", usFormat.format(100000010));
    assertEquals("µĐ1,000,000.01", usFormat.format(100000001));
    assertEquals("µĐ1.00", usFormat.format(100));
    assertEquals("µĐ0.10", usFormat.format(10));
    assertEquals("µĐ0.01", usFormat.format(1));
}