// Intercept the 3-arg write to validate len
        doNothing().when(raf).write(any(byte[].class), anyInt(), anyInt());
        raf.writeBoolean(true);
        raf.writeByte(0x7F);
        ArgumentCaptor<Integer> lenCap = ArgumentCaptor.forClass(Integer.class);
        verify(raf, atLeast(2)).write(any(byte[].class), anyInt(), lenCap.capture());

    Files.copy(i18nFile, temp);
    assertTrue(Files.equal(i18nFile, temp));

    Files.copy(asciiFile, temp);
    RandomAccessFile rf = new RandomAccessFile(temp, "rw");
    rf.writeByte(0);
    rf.close();
    assertEquals(asciiFile.length(), temp.length());
    assertFalse(Files.equal(asciiFile, temp));

    assertTrue(Files.asByteSource(asciiFile).contentEquals(Files.asByteSource(asciiFile)));

		if added > 0 || e != "" {
			if added > 0 {
				dst.WriteByte(SlashSeparatorChar)
			}
			dst.WriteString(e)
			added += len(e)
		}
	}

	if pathNeedsClean(dst.Bytes()) {
		s := path.Clean(dst.String())
		if trailingSlash {
			return s + SlashSeparator
		}
		return s
	}
	if trailingSlash {
		dst.WriteByte(SlashSeparatorChar)
	}
	return dst.String()
}

    }
  }

  @Test
  fun singleByteReadIsSigned() {
    server.enqueue(
      MockResponse
        .Builder()
        .body(
          Buffer()
            .writeByte(-2)
            .writeByte(-1),
        ).build(),
    )
    val response = getResponse(newRequest("/"))
    val inputStream = response.body.byteStream()
    assertThat(inputStream.read()).isEqualTo(254)

	var s strings.Builder
	if x&xlFlagFreeVersion != 0 {
		s.WriteString("FreeVersion")
	}
	if x&xlFlagUsesDataDir != 0 {
		if s.Len() > 0 {
			s.WriteByte(',')
		}
		s.WriteString("UsesDD")
	}
	if x&xlFlagInlineData != 0 {
		if s.Len() > 0 {
			s.WriteByte(',')
		}
		s.WriteString("Inline")
	}
	return s.String()
}

HSPLokio/Buffer;->write(Lokio/ByteString;)Lokio/Buffer;
HSPLokio/Buffer;->write([B)Lokio/Buffer;
HSPLokio/Buffer;->write([BII)Lokio/Buffer;
HSPLokio/Buffer;->writeAll(Lokio/Source;)J
HSPLokio/Buffer;->writeByte(I)Lokio/Buffer;
HSPLokio/Buffer;->writeByte(I)Lokio/BufferedSink;
HSPLokio/Buffer;->writeInt(I)Lokio/Buffer;
HSPLokio/Buffer;->writeShort(I)Lokio/Buffer;
HSPLokio/Buffer;->writeUtf8(Ljava/lang/String;)Lokio/Buffer;

pkg strings, method (*Builder) Len() int
pkg strings, method (*Builder) Reset()
pkg strings, method (*Builder) String() string
pkg strings, method (*Builder) Write([]uint8) (int, error)
pkg strings, method (*Builder) WriteByte(uint8) error
pkg strings, method (*Builder) WriteRune(int32) (int, error)
pkg strings, method (*Builder) WriteString(string) (int, error)
pkg strings, type Builder struct
pkg syscall (freebsd-386), const SYS_UTIMENSAT = 547

func BenchmarkWriterEmpty(b *testing.B) {
	b.ReportAllocs()
	str := strings.Repeat("x", 1<<10)
	bs := []byte(str)
	for i := 0; i < b.N; i++ {
		bw := NewWriter(io.Discard)
		bw.Flush()
		bw.WriteByte('a')
		bw.Flush()
		bw.WriteRune('B')
		bw.Flush()
		bw.Write(bs)
		bw.Flush()
		bw.WriteString(str)
		bw.Flush()
	}
}

func BenchmarkWriterFlush(b *testing.B) {

    assertFailsWith<ConnectionShutdownException> {
      connection.newStream(headerEntries("b", "banana"), false)
    }
    val sink = stream.sink.buffer()
    assertFailsWith<IOException> {
      sink.writeByte(0)
      sink.flush()
    }.also { expected ->
      assertThat(expected.message).isEqualTo("stream finished")
    }
    assertFailsWith<IOException> {
      stream.source.read(Buffer(), 1)

					if i == len(in) {
						break
					}
				}
				if len(old) == 0 {
					_, length := utf8.DecodeRune(in[i:])
					out.Write(in[i : i+length])
					i += length
				} else {
					out.WriteByte(in[i])
					i++
				}
			}
			if len(old) == 0 && n != 0 {
				out.Write(new)
			}
			return out.Bytes()
		}