}
	dir := netdir + "/" + comp[1] + "/" + name
	laddr, err := readPlan9Addr(comp[1], dir+"/local")
	if err != nil {
		return nil, err
	}
	return newFD(comp[1], name, nil, ctl, nil, laddr, nil)
}

func fileConn(f *os.File) (Conn, error) {
	fd, err := newFileFD(f)
	if err != nil {
		return nil, err
	}
	if !fd.ok() {
		return nil, syscall.EINVAL
	}

	fd.data, err = os.OpenFile(fd.dir+"/data", os.O_RDWR, 0)

func startTestSocketPeer(t testing.TB, conn Conn, op string, chunkSize, totalSize int) (func(t testing.TB), error) {
	t.Helper()

	if runtime.GOOS == "windows" {
		// TODO(panjf2000): Windows has not yet implemented FileConn,
		//		remove this when it's implemented in https://go.dev/issues/9503.
		t.Fatalf("startTestSocketPeer is not supported on %s", runtime.GOOS)
	}

	f, err := conn.(interface{ File() (*os.File, error) }).File()

	}

	f, err := os.CreateTemp("", "go-nettest")
	if err != nil {
		t.Fatal(err)
	}
	defer os.Remove(f.Name())
	defer f.Close()

	c, err := FileConn(f)
	if err != nil {
		if c != nil {
			t.Errorf("FileConn returned non-nil interface %T(%v) with err != nil", c, c)
		}
		if perr := parseCommonError(err); perr != nil {
			t.Error(perr)
		}
	} else {
		c.Close()

		b.Fatalf("expected %d copied bytes, but got %d", dataSize, n)
	}

	cancel()
}

func BenchmarkSendFile(b *testing.B) {
	if runtime.GOOS == "windows" {
		// TODO(panjf2000): Windows has not yet implemented FileConn,
		//		remove this when it's implemented in https://go.dev/issues/9503.
		b.Skipf("skipping on %s", runtime.GOOS)
	}

	b.Run("file-to-tcp", func(b *testing.B) { benchmarkSendFile(b, "tcp") })

        then:
        0 * writerContextMock._
    }

    def testWriteNoneNullValue() throws IOException {
        final File fileOne = new File("fileOne")
        final File fileTwo = new File("fileTwo")

        pathOption.getValue().add(fileOne)
        pathOption.getValue().add(fileTwo)

        when:
        pathOption.write(writerContextMock)

        then:

    }

    def "serializes state with shared include files"() {
        when:
        def fileOne = new File("one")
        def fileStates = [:]
        def stateOne = compilationFileState(TestHashCodes.hashCodeFrom(0x12345678), ["ONE", "TWO"])
        fileStates.put(fileOne, stateOne)

        def fileTwo = new File("two")

		{"Dialer.LocalAddr", Field, 1},
		{"Dialer.Resolver", Field, 8},
		{"Dialer.Timeout", Field, 1},
		{"ErrClosed", Var, 16},
		{"ErrWriteToConnected", Var, 0},
		{"Error", Type, 0},
		{"FileConn", Func, 0},
		{"FileListener", Func, 0},
		{"FilePacketConn", Func, 0},
		{"FlagBroadcast", Const, 0},
		{"FlagLoopback", Const, 0},
		{"FlagMulticast", Const, 0},
		{"FlagPointToPoint", Const, 0},

pkg net, func DialTimeout(string, string, time.Duration) (Conn, error)
pkg net, func DialUDP(string, *UDPAddr, *UDPAddr) (*UDPConn, error)
pkg net, func DialUnix(string, *UnixAddr, *UnixAddr) (*UnixConn, error)
pkg net, func FileConn(*os.File) (Conn, error)
pkg net, func FileListener(*os.File) (Listener, error)
pkg net, func FilePacketConn(*os.File) (PacketConn, error)
pkg net, func IPv4(uint8, uint8, uint8, uint8) IP