.hash()
                .toString())
        .isEqualTo("9753980fe94daa8ecaa82216519393a9");
    assertThrows(IllegalStateException.class, () -> hasher.putInt(42));
  }

  public void testHashTwice() {
    Hasher hasher = hmacMd5(MD5_KEY).newHasher();

    assertThat(
            hasher
                .putString("The quick brown fox jumps over the lazy dog", UTF_8)
                .hash()