SMBUtil.writeInt4(1, buffer, notifyOffset + 4);
        SMBUtil.writeInt4(6, buffer, notifyOffset + 8); // 6 bytes filename
        System.arraycopy("abc".getBytes("UnicodeLittleUnmarked"), 0, buffer, notifyOffset + 12, 6);

        // Second notification starts at aligned offset
        notifyOffset = 108; // 80 + 28
        SMBUtil.writeInt4(0, buffer, notifyOffset);

    String msg = "Alphanumeric characters are always 'safe' and should not be explicitly specified";
    IllegalArgumentException expected =
        assertThrows(IllegalArgumentException.class, () -> new PercentEscaper("-+#abc.!", false));
    assertThat(expected).hasMessageThat().isEqualTo(msg);
  }

  public void testBadArguments_plusforspace() {
    // space can be a safe char if plusForSpace is false

    }
  }

  @Test
  fun writeBounds() {
    val operator =
      FileOperator(
        randomAccessFile!!.getChannel(),
      )
    val buffer = Buffer().writeUtf8("abc")
    assertFailsWith<IndexOutOfBoundsException> {
      operator.write(0, buffer, -1L)
    }
    assertFailsWith<IndexOutOfBoundsException> {
      operator.write(0, buffer, 4L)
    }
  }

  private static final ImmutableSet<String> VALID_NAME =
      ImmutableSet.of(
          // keep-sorted start
          "123.cn",
          "8server.shop",
          "a" + DELTA + "b.com",
          "abc.a23",
          "biz.com.ua",
          "f--1.com",
          "f--o",
          "f-_-o.cOM",
          "f11-1.com",
          "fOo",
          "f_a",
          "foo.com",
          "foo.net.us\uFF61ocm",

          } else if (socketMode == Channel) {
            socketFactory(ChannelSocketFactory())
          }
        }.build()

    server.enqueue(MockResponse(body = "abc"))

    @Suppress("HttpUrlsUsage")
    val url =
      if (socketMode is TlsInstance) {
        "https://$hostname:${server.port}/get"
      } else {
        "http://$hostname:${server.port}/get"
      }

  public void testReadEmptyString() throws IOException {
    assertReadsCorrectly("");
  }

  public void testReadsStringsCorrectly() throws IOException {
    assertReadsCorrectly("abc");
    assertReadsCorrectly("abcde");
    assertReadsCorrectly("abcdefghijkl");
    assertReadsCorrectly(
        ""
            + "abcdefghijklmnopqrstuvwxyz\n"
            + "ABCDEFGHIJKLMNOPQRSTUVWXYZ\r"

    val sink1 = stream1.sink.buffer()
    val sink2 = stream2.sink.buffer()
    sink1.writeUtf8("abc")
    assertFailsWith<IOException> {
      sink2.writeUtf8("abc")
      sink2.flush()
    }.also { expected ->
      assertThat(expected.message).isEqualTo("stream was reset: REFUSED_STREAM")
    }
    sink1.writeUtf8("def")
    sink1.close()

  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('!'));
    assertTrue(len2.matches('a'));
    assertTrue(len2.matches('b'));

    @DisplayName("readUTF(): decodes bytes after size prefix")
    void readUTF_decodes() throws Exception {
        SmbRandomAccessFile raf = spy(newInstance("r", false, false, false));
        // Size prefix 3, then bytes for "abc"
        doReturn(3).when(raf).readUnsignedShort();
        doAnswer(inv -> {
            byte[] b = inv.getArgument(0);
            int off = inv.getArgument(1);
            b[off] = 'a';

  }

  @SuppressWarnings("unchecked") // functor classes have no type parameters
  public void testGet_functors() {
    assertEquals(0, ArbitraryInstances.get(Comparator.class).compare("abc", 123));
    assertTrue(ArbitraryInstances.get(Predicate.class).apply("abc"));
    assertTrue(ArbitraryInstances.get(Equivalence.class).equivalent(1, 1));
    assertFalse(ArbitraryInstances.get(Equivalence.class).equivalent(1, 2));
  }