}

    verify(hasher).putBytes(testBytes, 0, testBytes.length);
    verify(hashFunction).newHasher();
    verifyNoMoreInteractions(hashFunction, hasher);
  }

  public void testRead_putByteArrayAtPos() throws Exception {
    HashingInputStream in = new HashingInputStream(hashFunction, buffer);

    byte[] buf = new byte[3];
    int numOfByteRead = in.read(buf, 0, 3);
    assertEquals(3, numOfByteRead);

    }

    verify(hasher).putBytes(testBytes, 0, testBytes.length);
    verify(hashFunction).newHasher();
    verifyNoMoreInteractions(hashFunction, hasher);
  }

  public void testRead_putByteArrayAtPos() throws Exception {
    HashingInputStream in = new HashingInputStream(hashFunction, buffer);

    byte[] buf = new byte[3];
    int numOfByteRead = in.read(buf, 0, 3);
    assertEquals(3, numOfByteRead);