| // Copyright 2015 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. |
| |
| // +build linux |
| |
| package fsnotify |
| |
| import ( |
| "os" |
| "path/filepath" |
| "testing" |
| "time" |
| ) |
| |
| func TestInotifyCloseRightAway(t *testing.T) { |
| w, err := NewWatcher() |
| if err != nil { |
| t.Fatalf("Failed to create watcher") |
| } |
| |
| // Close immediately; it won't even reach the first syscall.Read. |
| w.Close() |
| |
| // Wait for the close to complete. |
| <-time.After(50 * time.Millisecond) |
| isWatcherReallyClosed(t, w) |
| } |
| |
| func TestInotifyCloseSlightlyLater(t *testing.T) { |
| w, err := NewWatcher() |
| if err != nil { |
| t.Fatalf("Failed to create watcher") |
| } |
| |
| // Wait until readEvents has reached syscall.Read, and Close. |
| <-time.After(50 * time.Millisecond) |
| w.Close() |
| |
| // Wait for the close to complete. |
| <-time.After(50 * time.Millisecond) |
| isWatcherReallyClosed(t, w) |
| } |
| |
| func TestInotifyCloseSlightlyLaterWithWatch(t *testing.T) { |
| testDir := tempMkdir(t) |
| defer os.RemoveAll(testDir) |
| |
| w, err := NewWatcher() |
| if err != nil { |
| t.Fatalf("Failed to create watcher") |
| } |
| w.Add(testDir) |
| |
| // Wait until readEvents has reached syscall.Read, and Close. |
| <-time.After(50 * time.Millisecond) |
| w.Close() |
| |
| // Wait for the close to complete. |
| <-time.After(50 * time.Millisecond) |
| isWatcherReallyClosed(t, w) |
| } |
| |
| func TestInotifyCloseAfterRead(t *testing.T) { |
| testDir := tempMkdir(t) |
| defer os.RemoveAll(testDir) |
| |
| w, err := NewWatcher() |
| if err != nil { |
| t.Fatalf("Failed to create watcher") |
| } |
| |
| err = w.Add(testDir) |
| if err != nil { |
| t.Fatalf("Failed to add .") |
| } |
| |
| // Generate an event. |
| os.Create(filepath.Join(testDir, "somethingSOMETHINGsomethingSOMETHING")) |
| |
| // Wait for readEvents to read the event, then close the watcher. |
| <-time.After(50 * time.Millisecond) |
| w.Close() |
| |
| // Wait for the close to complete. |
| <-time.After(50 * time.Millisecond) |
| isWatcherReallyClosed(t, w) |
| } |
| |
| func isWatcherReallyClosed(t *testing.T, w *Watcher) { |
| select { |
| case err, ok := <-w.Errors: |
| if ok { |
| t.Fatalf("w.Errors is not closed; readEvents is still alive after closing (error: %v)", err) |
| } |
| default: |
| t.Fatalf("w.Errors would have blocked; readEvents is still alive!") |
| } |
| |
| select { |
| case _, ok := <-w.Events: |
| if ok { |
| t.Fatalf("w.Events is not closed; readEvents is still alive after closing") |
| } |
| default: |
| t.Fatalf("w.Events would have blocked; readEvents is still alive!") |
| } |
| } |
| |
| func TestInotifyCloseCreate(t *testing.T) { |
| testDir := tempMkdir(t) |
| defer os.RemoveAll(testDir) |
| |
| w, err := NewWatcher() |
| if err != nil { |
| t.Fatalf("Failed to create watcher: %v", err) |
| } |
| defer w.Close() |
| |
| err = w.Add(testDir) |
| if err != nil { |
| t.Fatalf("Failed to add testDir: %v", err) |
| } |
| h, err := os.Create(filepath.Join(testDir, "testfile")) |
| if err != nil { |
| t.Fatalf("Failed to create file in testdir: %v", err) |
| } |
| h.Close() |
| select { |
| case _ = <-w.Events: |
| case err := <-w.Errors: |
| t.Fatalf("Error from watcher: %v", err) |
| case <-time.After(50 * time.Millisecond): |
| t.Fatalf("Took too long to wait for event") |
| } |
| |
| // At this point, we've received one event, so the goroutine is ready. |
| // It's also blocking on syscall.Read. |
| // Now we try to swap the file descriptor under its nose. |
| w.Close() |
| w, err = NewWatcher() |
| if err != nil { |
| t.Fatalf("Failed to create second watcher: %v", err) |
| } |
| |
| <-time.After(50 * time.Millisecond) |
| err = w.Add(testDir) |
| if err != nil { |
| t.Fatalf("Error adding testDir again: %v", err) |
| } |
| } |