assertFailsWith<IllegalArgumentException> {
      Request.Builder().addHeader("a b", "c")
    }.also { expected ->
      assertThat(expected.message).isEqualTo("Unexpected char 0x20 at 1 in header name: a b")
    }
  }

  @Test
  fun requestHeaderNameWithTabForbidden() {
    assertFailsWith<IllegalArgumentException> {
      Request.Builder().addHeader("a\tb", "c")

              new byte[] {(byte) 0xcd, (byte) 0xab, (byte) 0x00, (byte) 0x00},
              0x0000abcd,
              null,
              "cdab0000"),
          new ExpectedHashCode(
              new byte[] {
                (byte) 0xef, (byte) 0xcd, (byte) 0xab, (byte) 0x00,
                (byte) 0x00, (byte) 0x00, (byte) 0x00, (byte) 0x00
              },
              0x00abcdef,
              0x0000000000abcdefL,

    }

    @Test
    public void testToStringContainsCount() {
        // Little-endian: count = 512 (0x0200)
        byte[] buf = new byte[12];
        buf[0] = 0x00;
        buf[1] = 0x02; // count = 512 in little-endian
        resp.readParameterWordsWireFormat(buf, 0);
        String str = resp.toString();
        assertTrue(str.contains("count=512"), "toString should include numeric count");
    }

    void flagsTest() {
        assertEquals(0x00, SmbConstants.FLAGS_NONE);
        assertEquals(0x08, SmbConstants.FLAGS_PATH_NAMES_CASELESS);
        assertEquals(0x10, SmbConstants.FLAGS_PATH_NAMES_CANONICALIZED);
        assertEquals(0x80, SmbConstants.FLAGS_RESPONSE);
    }

    /**
     * Test interaction with SmbTransport using Mockito.
     * This demonstrates mocking capabilities for testing.
     */
    @Test

        @Test
        @DisplayName("Various byte values are converted to uppercase hex")
        void testHexConversion() {
            byte[] challenge = new byte[] { (byte) 0x00, (byte) 0x0F, (byte) 0x10, (byte) 0x7F, (byte) 0x80, (byte) 0xFF };
            UniAddress dc = mock(UniAddress.class);
            when(dc.toString()).thenReturn("DC");

            NtlmChallenge nc = new NtlmChallenge(challenge, dc);

        assertEquals((byte) (0x80 | (NameServicePacket.QUERY << 3) | 0x04 | 0x02 | 0x01), dst[2]); // flags1
        assertEquals((byte) (0x80 | 0x10 | NameServicePacket.FMT_ERR), dst[3]); // flags2
        assertEquals((byte) 0x00, dst[4]); // questionCount
        assertEquals((byte) 0x01, dst[5]);
        assertEquals((byte) 0x00, dst[6]); // answerCount
        assertEquals((byte) 0x02, dst[7]);

    // flags

    static final int FLAGS_CLOSE_AFTER_THIS_REQUEST = 0x01;
    static final int FLAGS_CLOSE_IF_END_REACHED = 0x02;
    static final int FLAGS_RETURN_RESUME_KEYS = 0x04;
    static final int FLAGS_RESUME_FROM_PREVIOUS_END = 0x08;
    static final int FLAGS_FIND_WITH_BACKUP_INTENT = 0x10;

    private final int searchAttributes;
    private final int tflags;
    private final int informationLevel;

        // Verify content
        assertArrayEquals(new byte[] { 0x02, 0x03, 0x04, 0x00, 0x00 }, dest, "Encoded bytes should match the expected subset");
    }

    @Test
    void testEncodeWithOffset() {
        // Test encoding with a destination offset
        byte[] data = { 0x01, 0x02, 0x03, 0x04, 0x05 };
        ByteEncodable encodable = new ByteEncodable(data, 0, 3);

  public void testCollisionsDueToIncorrectSignExtension() {
    byte[] col1 = new byte[] {0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, (byte) 0x80};
    byte[] col2 = new byte[] {0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, (byte) 0x81};
    byte[] col3 = new byte[] {0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, (byte) 0xff};

    ImmutableSet<HashCode> hashCodes =
        ImmutableSet.of(

  public void testCollisionsDueToIncorrectSignExtension() {
    byte[] col1 = new byte[] {0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, (byte) 0x80};
    byte[] col2 = new byte[] {0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, (byte) 0x81};
    byte[] col3 = new byte[] {0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, (byte) 0xff};

    ImmutableSet<HashCode> hashCodes =
        ImmutableSet.of(