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-rw-r--r--src/internal/poll/fd_windows_test.go111
1 files changed, 111 insertions, 0 deletions
diff --git a/src/internal/poll/fd_windows_test.go b/src/internal/poll/fd_windows_test.go
new file mode 100644
index 0000000..e3ca0e2
--- /dev/null
+++ b/src/internal/poll/fd_windows_test.go
@@ -0,0 +1,111 @@
+// Copyright 2017 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package poll_test
+
+import (
+ "fmt"
+ "internal/poll"
+ "os"
+ "sync"
+ "syscall"
+ "testing"
+)
+
+type loggedFD struct {
+ Net string
+ FD *poll.FD
+ Err error
+}
+
+var (
+ logMu sync.Mutex
+ loggedFDs map[syscall.Handle]*loggedFD
+)
+
+func logFD(net string, fd *poll.FD, err error) {
+ logMu.Lock()
+ defer logMu.Unlock()
+
+ loggedFDs[fd.Sysfd] = &loggedFD{
+ Net: net,
+ FD: fd,
+ Err: err,
+ }
+}
+
+func init() {
+ loggedFDs = make(map[syscall.Handle]*loggedFD)
+ *poll.LogInitFD = logFD
+}
+
+func findLoggedFD(h syscall.Handle) (lfd *loggedFD, found bool) {
+ logMu.Lock()
+ defer logMu.Unlock()
+
+ lfd, found = loggedFDs[h]
+ return lfd, found
+}
+
+// checkFileIsNotPartOfNetpoll verifies that f is not managed by netpoll.
+// It returns error, if check fails.
+func checkFileIsNotPartOfNetpoll(f *os.File) error {
+ lfd, found := findLoggedFD(syscall.Handle(f.Fd()))
+ if !found {
+ return fmt.Errorf("%v fd=%v: is not found in the log", f.Name(), f.Fd())
+ }
+ if lfd.FD.IsPartOfNetpoll() {
+ return fmt.Errorf("%v fd=%v: is part of netpoll, but should not be (logged: net=%v err=%v)", f.Name(), f.Fd(), lfd.Net, lfd.Err)
+ }
+ return nil
+}
+
+func TestFileFdsAreInitialised(t *testing.T) {
+ exe, err := os.Executable()
+ if err != nil {
+ t.Fatal(err)
+ }
+ f, err := os.Open(exe)
+ if err != nil {
+ t.Fatal(err)
+ }
+ defer f.Close()
+
+ err = checkFileIsNotPartOfNetpoll(f)
+ if err != nil {
+ t.Fatal(err)
+ }
+}
+
+func TestSerialFdsAreInitialised(t *testing.T) {
+ for _, name := range []string{"COM1", "COM2", "COM3", "COM4"} {
+ t.Run(name, func(t *testing.T) {
+ h, err := syscall.CreateFile(syscall.StringToUTF16Ptr(name),
+ syscall.GENERIC_READ|syscall.GENERIC_WRITE,
+ 0,
+ nil,
+ syscall.OPEN_EXISTING,
+ syscall.FILE_ATTRIBUTE_NORMAL|syscall.FILE_FLAG_OVERLAPPED,
+ 0)
+ if err != nil {
+ if errno, ok := err.(syscall.Errno); ok {
+ switch errno {
+ case syscall.ERROR_FILE_NOT_FOUND,
+ syscall.ERROR_ACCESS_DENIED:
+ t.Log("Skipping: ", err)
+ return
+ }
+ }
+ t.Fatal(err)
+ }
+ f := os.NewFile(uintptr(h), name)
+ defer f.Close()
+
+ err = checkFileIsNotPartOfNetpoll(f)
+ if err != nil {
+ t.Fatal(err)
+ }
+ })
+ }
+}