exp/inotify: fix data race in linux tests

Fixes #2708.

R=golang-dev, bradfitz
CC=golang-dev, mpimenov
https://golang.org/cl/5543060

diff --git a/src/pkg/exp/inotify/inotify_linux_test.go b/src/pkg/exp/inotify/inotify_linux_test.go
index d035ec1410ff16afd9daa9a349e29de06ff5c18b..c2160fc65375d42198940fa55d9285848c3b435f 100644 (file)
--- a/src/pkg/exp/inotify/inotify_linux_test.go
+++ b/src/pkg/exp/inotify/inotify_linux_test.go
@@ -83,14 +83,15 @@ func TestInotifyClose(t *testing.T) {
        watcher, _ := NewWatcher()
        watcher.Close()
 
-       done := false
+       done := make(chan bool)
        go func() {
                watcher.Close()
-               done = true
+               done <- true
        }()
 
-       time.Sleep(50 * time.Millisecond)
-       if !done {
+       select {
+       case <-done:
+       case <-time.After(50 * time.Millisecond):
                t.Fatal("double Close() test failed: second Close() call didn't return")
        }