@Test
public void privateKeyToWif() {

    final String privateKey = "9117f4bf9be717c9a90994326897f4243503accd06712162267e77f18b49c3a3";
    String result = WIF.getWIFFromPrivateKey(Numeric.hexStringToByteArray(privateKey));
    String expected = "L25kgAQJXNHnhc7Sx9bomxxwVSMsZdkaNQ3m2VfHrnLzKWMLP13A";
    assertThat(result, is(expected));
}