Iterable<Character> result = Traverser.forGraph(graph).breadthFirst(charactersOf("ab"));

    assertEqualCharNodes(Iterables.limit(result, 2), "ab");
    assertThat(graph.requestedNodes).containsExactly('a', 'a', 'b', 'b');

    // Iterate again to see if calculation is done again
    assertEqualCharNodes(Iterables.limit(result, 2), "ab");
    assertThat(graph.requestedNodes).containsExactly('a', 'a', 'a', 'b', 'b', 'b');
  }

    Iterable<Character> result = Traverser.forGraph(graph).breadthFirst(charactersOf("ab"));

    assertEqualCharNodes(Iterables.limit(result, 2), "ab");
    assertThat(graph.requestedNodes).containsExactly('a', 'a', 'b', 'b');

    // Iterate again to see if calculation is done again
    assertEqualCharNodes(Iterables.limit(result, 2), "ab");
    assertThat(graph.requestedNodes).containsExactly('a', 'a', 'a', 'b', 'b', 'b');
  }

    // These have a combination of invalid length and unrecognized characters.
    assertFailsToDecode(base16(), "?", "Invalid input length 1");
    assertFailsToDecode(base16(), "ab");
    assertFailsToDecode(base16().lowerCase(), "AB");
  }

  public void testBase16Offset() {
    testEncodesWithOffset(base16(), "foobar", 0, 6, "666F6F626172");
    testEncodesWithOffset(base16(), "foobar", 1, 5, "6F6F626172");

        assertEquals("", normalizeText("\t \t", 100, 2, -1, false));
        assertEquals("12 ab", normalizeText(" 123 abc ", 100, 2, -1, false));
        assertEquals("１２３ あいう", normalizeText("　１２３　あいう　", 100, 2, -1, false));
        assertEquals("12 ab", normalizeText(" 123\nabc ", 100, 2, -1, false));
        assertEquals("12", normalizeText(" 123abc ", 100, 2, -1, false));
    }

    /**
     *
     */
    public String other = "other";

    /**
     *
     */
    public String abc_exclude = "exclude";

    /**
     *
     */
    public String ab = "ab";

        return Stream.of(Arguments.of(new byte[0], ""), Arguments.of(new byte[] { (byte) 0x41 }, "QQ=="), // "A"
                Arguments.of(new byte[] { (byte) 0x41, (byte) 0x42 }, "QUI="), // "AB"
                Arguments.of("Man".getBytes(), "TWFu"), // 3 bytes, no padding
                Arguments.of(new byte[] { (byte) 0x00, (byte) 0x00, (byte) 0x00 }, "AAAA"), // all zeros

  }

  @GwtIncompatible // java.util.Random, java.util.BitSet
  public void testSmallCharMatcher() {
    CharMatcher len1 = SmallCharMatcher.from(bitSet("#"), "#");
    CharMatcher len2 = SmallCharMatcher.from(bitSet("ab"), "ab");
    CharMatcher len3 = SmallCharMatcher.from(bitSet("abc"), "abc");
    CharMatcher len4 = SmallCharMatcher.from(bitSet("abcd"), "abcd");
    assertTrue(len1.matches('#'));
    assertFalse(len1.matches('!'));

	{"Trim", []byte{'a', 'a'}, "a", nil},
	{"Trim", []byte{'a'}, "ab", nil},
	{"Trim", []byte{'a', 'b'}, "ab", nil},
	{"Trim", []byte("☺"), "☺", nil},
	{"TrimLeft", nil, "", nil},
	{"TrimLeft", []byte{}, "", nil},
	{"TrimLeft", []byte{'a'}, "a", nil},
	{"TrimLeft", []byte{'a', 'a'}, "a", nil},
	{"TrimLeft", []byte{'a'}, "ab", nil},
	{"TrimLeft", []byte{'a', 'b'}, "ab", nil},
	{"TrimLeft", []byte("☺"), "☺", nil},

        assertEquals("2", "1234ef", StringUtil.replace("12345", "5", "ef"));
        assertEquals("3", "ab2345", StringUtil.replace("12345", "1", "ab"));
        assertEquals("4", "a234a", StringUtil.replace("12341", "1", "a"));
        assertEquals("5", "ab234abab234ab", StringUtil.replace("1234112341", "1", "ab"));
        assertEquals("6", "a\\nb", StringUtil.replace("a\nb", "\n", "\\n"));
    }

    /**
     * @throws Exception
     */

            NtlmChallenge nc = new NtlmChallenge(challenge, dc);
            String result = nc.toString();

            // With size = 1 * 2 = 2, Hexdump.toHexString produces "AB"
            assertTrue(result.contains("challenge=0xAB"));
            assertTrue(result.contains("dc=TESTDC"));
        }

        @Test
        @DisplayName("toString with null challenge throws NPE")