123 lines
2.5 KiB
Go
123 lines
2.5 KiB
Go
package main
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import (
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"fmt"
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"github.com/fsnotify/fsnotify"
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"io/ioutil"
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"os"
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"runtime"
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"testing"
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"time"
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)
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const (
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interval = 100 * time.Millisecond
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)
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func TestPoller_AddRemove(t *testing.T) {
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w := PollingWatcher(interval)
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if err := w.Add("no-such-file"); err == nil {
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t.Fatal("should have gotten error when adding a non-existent file")
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}
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if err := w.Remove("no-such-file"); err == nil {
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t.Fatal("should have gotten error when removing non-existent watch")
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}
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f, err := ioutil.TempFile("", "asdf")
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if err != nil {
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t.Fatal(err)
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}
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defer os.RemoveAll(f.Name())
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if err := w.Add(f.Name()); err != nil {
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t.Fatal(err)
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}
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if err := w.Remove(f.Name()); err != nil {
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t.Fatal(err)
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}
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}
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func TestPoller_Event(t *testing.T) {
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if runtime.GOOS == "windows" {
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t.Skip("No chmod on Windows")
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}
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w := PollingWatcher(interval)
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f, err := ioutil.TempFile("", "test-poller")
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if err != nil {
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t.Fatal("error creating temp file")
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}
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defer os.RemoveAll(f.Name())
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f.Close()
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if err := w.Add(f.Name()); err != nil {
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t.Fatal(err)
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}
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select {
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case <-w.Events():
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t.Fatal("got event before anything happened")
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case <-w.Errors():
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t.Fatal("got error before anything happened")
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default:
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}
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if err := ioutil.WriteFile(f.Name(), []byte("hello"), 0644); err != nil {
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t.Fatal(err)
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}
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if err := assertEvent(w, fsnotify.Write); err != nil {
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t.Fatal(err)
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}
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if err := os.Chmod(f.Name(), 600); err != nil {
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t.Fatal(err)
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}
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if err := assertEvent(w, fsnotify.Chmod); err != nil {
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t.Fatal(err)
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}
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if err := os.Remove(f.Name()); err != nil {
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t.Fatal(err)
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}
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if err := assertEvent(w, fsnotify.Remove); err != nil {
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t.Fatal(err)
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}
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}
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func TestPoller_Close(t *testing.T) {
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w := PollingWatcher(interval)
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if err := w.Close(); err != nil {
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t.Fatal(err)
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}
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// test double-close
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if err := w.Close(); err != nil {
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t.Fatal(err)
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}
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f, err := ioutil.TempFile("", "asdf")
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if err != nil {
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t.Fatal(err)
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}
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defer os.RemoveAll(f.Name())
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if err := w.Add(f.Name()); err == nil {
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t.Fatal("should have gotten error adding watch for closed watcher")
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}
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}
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func assertEvent(w FileWatcher, eType fsnotify.Op) error {
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var err error
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select {
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case e := <-w.Events():
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if e.Op != eType {
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err = fmt.Errorf("got wrong event type, expected %q: %v", eType, e.Op)
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}
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case e := <-w.Errors():
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err = fmt.Errorf("got unexpected error waiting for events %v: %v", eType, e)
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case <-time.After(time.Duration(1) * time.Second):
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err = fmt.Errorf("timeout waiting for event %v", eType)
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}
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return err
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}
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