+++ /dev/null
-// Copyright 2010 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 !plan9,!solaris
-
-package fsnotify
-
-import (
- "io/ioutil"
- "os"
- "os/exec"
- "path"
- "path/filepath"
- "runtime"
- "sync/atomic"
- "testing"
- "time"
-)
-
-// An atomic counter
-type counter struct {
- val int32
-}
-
-func (c *counter) increment() {
- atomic.AddInt32(&c.val, 1)
-}
-
-func (c *counter) value() int32 {
- return atomic.LoadInt32(&c.val)
-}
-
-func (c *counter) reset() {
- atomic.StoreInt32(&c.val, 0)
-}
-
-// tempMkdir makes a temporary directory
-func tempMkdir(t *testing.T) string {
- dir, err := ioutil.TempDir("", "fsnotify")
- if err != nil {
- t.Fatalf("failed to create test directory: %s", err)
- }
- return dir
-}
-
-// tempMkFile makes a temporary file.
-func tempMkFile(t *testing.T, dir string) string {
- f, err := ioutil.TempFile(dir, "fsnotify")
- if err != nil {
- t.Fatalf("failed to create test file: %v", err)
- }
- defer f.Close()
- return f.Name()
-}
-
-// newWatcher initializes an fsnotify Watcher instance.
-func newWatcher(t *testing.T) *Watcher {
- watcher, err := NewWatcher()
- if err != nil {
- t.Fatalf("NewWatcher() failed: %s", err)
- }
- return watcher
-}
-
-// addWatch adds a watch for a directory
-func addWatch(t *testing.T, watcher *Watcher, dir string) {
- if err := watcher.Add(dir); err != nil {
- t.Fatalf("watcher.Add(%q) failed: %s", dir, err)
- }
-}
-
-func TestFsnotifyMultipleOperations(t *testing.T) {
- watcher := newWatcher(t)
-
- // Receive errors on the error channel on a separate goroutine
- go func() {
- for err := range watcher.Errors {
- t.Fatalf("error received: %s", err)
- }
- }()
-
- // Create directory to watch
- testDir := tempMkdir(t)
- defer os.RemoveAll(testDir)
-
- // Create directory that's not watched
- testDirToMoveFiles := tempMkdir(t)
- defer os.RemoveAll(testDirToMoveFiles)
-
- testFile := filepath.Join(testDir, "TestFsnotifySeq.testfile")
- testFileRenamed := filepath.Join(testDirToMoveFiles, "TestFsnotifySeqRename.testfile")
-
- addWatch(t, watcher, testDir)
-
- // Receive events on the event channel on a separate goroutine
- eventstream := watcher.Events
- var createReceived, modifyReceived, deleteReceived, renameReceived counter
- done := make(chan bool)
- go func() {
- for event := range eventstream {
- // Only count relevant events
- if event.Name == filepath.Clean(testDir) || event.Name == filepath.Clean(testFile) {
- t.Logf("event received: %s", event)
- if event.Op&Remove == Remove {
- deleteReceived.increment()
- }
- if event.Op&Write == Write {
- modifyReceived.increment()
- }
- if event.Op&Create == Create {
- createReceived.increment()
- }
- if event.Op&Rename == Rename {
- renameReceived.increment()
- }
- } else {
- t.Logf("unexpected event received: %s", event)
- }
- }
- done <- true
- }()
-
- // Create a file
- // This should add at least one event to the fsnotify event queue
- var f *os.File
- f, err := os.OpenFile(testFile, os.O_WRONLY|os.O_CREATE, 0666)
- if err != nil {
- t.Fatalf("creating test file failed: %s", err)
- }
- f.Sync()
-
- time.Sleep(time.Millisecond)
- f.WriteString("data")
- f.Sync()
- f.Close()
-
- time.Sleep(50 * time.Millisecond) // give system time to sync write change before delete
-
- if err := testRename(testFile, testFileRenamed); err != nil {
- t.Fatalf("rename failed: %s", err)
- }
-
- // Modify the file outside of the watched dir
- f, err = os.Open(testFileRenamed)
- if err != nil {
- t.Fatalf("open test renamed file failed: %s", err)
- }
- f.WriteString("data")
- f.Sync()
- f.Close()
-
- time.Sleep(50 * time.Millisecond) // give system time to sync write change before delete
-
- // Recreate the file that was moved
- f, err = os.OpenFile(testFile, os.O_WRONLY|os.O_CREATE, 0666)
- if err != nil {
- t.Fatalf("creating test file failed: %s", err)
- }
- f.Close()
- time.Sleep(50 * time.Millisecond) // give system time to sync write change before delete
-
- // We expect this event to be received almost immediately, but let's wait 500 ms to be sure
- time.Sleep(500 * time.Millisecond)
- cReceived := createReceived.value()
- if cReceived != 2 {
- t.Fatalf("incorrect number of create events received after 500 ms (%d vs %d)", cReceived, 2)
- }
- mReceived := modifyReceived.value()
- if mReceived != 1 {
- t.Fatalf("incorrect number of modify events received after 500 ms (%d vs %d)", mReceived, 1)
- }
- dReceived := deleteReceived.value()
- rReceived := renameReceived.value()
- if dReceived+rReceived != 1 {
- t.Fatalf("incorrect number of rename+delete events received after 500 ms (%d vs %d)", rReceived+dReceived, 1)
- }
-
- // Try closing the fsnotify instance
- t.Log("calling Close()")
- watcher.Close()
- t.Log("waiting for the event channel to become closed...")
- select {
- case <-done:
- t.Log("event channel closed")
- case <-time.After(2 * time.Second):
- t.Fatal("event stream was not closed after 2 seconds")
- }
-}
-
-func TestFsnotifyMultipleCreates(t *testing.T) {
- watcher := newWatcher(t)
-
- // Receive errors on the error channel on a separate goroutine
- go func() {
- for err := range watcher.Errors {
- t.Fatalf("error received: %s", err)
- }
- }()
-
- // Create directory to watch
- testDir := tempMkdir(t)
- defer os.RemoveAll(testDir)
-
- testFile := filepath.Join(testDir, "TestFsnotifySeq.testfile")
-
- addWatch(t, watcher, testDir)
-
- // Receive events on the event channel on a separate goroutine
- eventstream := watcher.Events
- var createReceived, modifyReceived, deleteReceived counter
- done := make(chan bool)
- go func() {
- for event := range eventstream {
- // Only count relevant events
- if event.Name == filepath.Clean(testDir) || event.Name == filepath.Clean(testFile) {
- t.Logf("event received: %s", event)
- if event.Op&Remove == Remove {
- deleteReceived.increment()
- }
- if event.Op&Create == Create {
- createReceived.increment()
- }
- if event.Op&Write == Write {
- modifyReceived.increment()
- }
- } else {
- t.Logf("unexpected event received: %s", event)
- }
- }
- done <- true
- }()
-
- // Create a file
- // This should add at least one event to the fsnotify event queue
- var f *os.File
- f, err := os.OpenFile(testFile, os.O_WRONLY|os.O_CREATE, 0666)
- if err != nil {
- t.Fatalf("creating test file failed: %s", err)
- }
- f.Sync()
-
- time.Sleep(time.Millisecond)
- f.WriteString("data")
- f.Sync()
- f.Close()
-
- time.Sleep(50 * time.Millisecond) // give system time to sync write change before delete
-
- os.Remove(testFile)
-
- time.Sleep(50 * time.Millisecond) // give system time to sync write change before delete
-
- // Recreate the file
- f, err = os.OpenFile(testFile, os.O_WRONLY|os.O_CREATE, 0666)
- if err != nil {
- t.Fatalf("creating test file failed: %s", err)
- }
- f.Close()
- time.Sleep(50 * time.Millisecond) // give system time to sync write change before delete
-
- // Modify
- f, err = os.OpenFile(testFile, os.O_WRONLY, 0666)
- if err != nil {
- t.Fatalf("creating test file failed: %s", err)
- }
- f.Sync()
-
- time.Sleep(time.Millisecond)
- f.WriteString("data")
- f.Sync()
- f.Close()
-
- time.Sleep(50 * time.Millisecond) // give system time to sync write change before delete
-
- // Modify
- f, err = os.OpenFile(testFile, os.O_WRONLY, 0666)
- if err != nil {
- t.Fatalf("creating test file failed: %s", err)
- }
- f.Sync()
-
- time.Sleep(time.Millisecond)
- f.WriteString("data")
- f.Sync()
- f.Close()
-
- time.Sleep(50 * time.Millisecond) // give system time to sync write change before delete
-
- // We expect this event to be received almost immediately, but let's wait 500 ms to be sure
- time.Sleep(500 * time.Millisecond)
- cReceived := createReceived.value()
- if cReceived != 2 {
- t.Fatalf("incorrect number of create events received after 500 ms (%d vs %d)", cReceived, 2)
- }
- mReceived := modifyReceived.value()
- if mReceived < 3 {
- t.Fatalf("incorrect number of modify events received after 500 ms (%d vs atleast %d)", mReceived, 3)
- }
- dReceived := deleteReceived.value()
- if dReceived != 1 {
- t.Fatalf("incorrect number of rename+delete events received after 500 ms (%d vs %d)", dReceived, 1)
- }
-
- // Try closing the fsnotify instance
- t.Log("calling Close()")
- watcher.Close()
- t.Log("waiting for the event channel to become closed...")
- select {
- case <-done:
- t.Log("event channel closed")
- case <-time.After(2 * time.Second):
- t.Fatal("event stream was not closed after 2 seconds")
- }
-}
-
-func TestFsnotifyDirOnly(t *testing.T) {
- watcher := newWatcher(t)
-
- // Create directory to watch
- testDir := tempMkdir(t)
- defer os.RemoveAll(testDir)
-
- // Create a file before watching directory
- // This should NOT add any events to the fsnotify event queue
- testFileAlreadyExists := filepath.Join(testDir, "TestFsnotifyEventsExisting.testfile")
- {
- var f *os.File
- f, err := os.OpenFile(testFileAlreadyExists, os.O_WRONLY|os.O_CREATE, 0666)
- if err != nil {
- t.Fatalf("creating test file failed: %s", err)
- }
- f.Sync()
- f.Close()
- }
-
- addWatch(t, watcher, testDir)
-
- // Receive errors on the error channel on a separate goroutine
- go func() {
- for err := range watcher.Errors {
- t.Fatalf("error received: %s", err)
- }
- }()
-
- testFile := filepath.Join(testDir, "TestFsnotifyDirOnly.testfile")
-
- // Receive events on the event channel on a separate goroutine
- eventstream := watcher.Events
- var createReceived, modifyReceived, deleteReceived counter
- done := make(chan bool)
- go func() {
- for event := range eventstream {
- // Only count relevant events
- if event.Name == filepath.Clean(testDir) || event.Name == filepath.Clean(testFile) || event.Name == filepath.Clean(testFileAlreadyExists) {
- t.Logf("event received: %s", event)
- if event.Op&Remove == Remove {
- deleteReceived.increment()
- }
- if event.Op&Write == Write {
- modifyReceived.increment()
- }
- if event.Op&Create == Create {
- createReceived.increment()
- }
- } else {
- t.Logf("unexpected event received: %s", event)
- }
- }
- done <- true
- }()
-
- // Create a file
- // This should add at least one event to the fsnotify event queue
- var f *os.File
- f, err := os.OpenFile(testFile, os.O_WRONLY|os.O_CREATE, 0666)
- if err != nil {
- t.Fatalf("creating test file failed: %s", err)
- }
- f.Sync()
-
- time.Sleep(time.Millisecond)
- f.WriteString("data")
- f.Sync()
- f.Close()
-
- time.Sleep(50 * time.Millisecond) // give system time to sync write change before delete
-
- os.Remove(testFile)
- os.Remove(testFileAlreadyExists)
-
- // We expect this event to be received almost immediately, but let's wait 500 ms to be sure
- time.Sleep(500 * time.Millisecond)
- cReceived := createReceived.value()
- if cReceived != 1 {
- t.Fatalf("incorrect number of create events received after 500 ms (%d vs %d)", cReceived, 1)
- }
- mReceived := modifyReceived.value()
- if mReceived != 1 {
- t.Fatalf("incorrect number of modify events received after 500 ms (%d vs %d)", mReceived, 1)
- }
- dReceived := deleteReceived.value()
- if dReceived != 2 {
- t.Fatalf("incorrect number of delete events received after 500 ms (%d vs %d)", dReceived, 2)
- }
-
- // Try closing the fsnotify instance
- t.Log("calling Close()")
- watcher.Close()
- t.Log("waiting for the event channel to become closed...")
- select {
- case <-done:
- t.Log("event channel closed")
- case <-time.After(2 * time.Second):
- t.Fatal("event stream was not closed after 2 seconds")
- }
-}
-
-func TestFsnotifyDeleteWatchedDir(t *testing.T) {
- watcher := newWatcher(t)
- defer watcher.Close()
-
- // Create directory to watch
- testDir := tempMkdir(t)
- defer os.RemoveAll(testDir)
-
- // Create a file before watching directory
- testFileAlreadyExists := filepath.Join(testDir, "TestFsnotifyEventsExisting.testfile")
- {
- var f *os.File
- f, err := os.OpenFile(testFileAlreadyExists, os.O_WRONLY|os.O_CREATE, 0666)
- if err != nil {
- t.Fatalf("creating test file failed: %s", err)
- }
- f.Sync()
- f.Close()
- }
-
- addWatch(t, watcher, testDir)
-
- // Add a watch for testFile
- addWatch(t, watcher, testFileAlreadyExists)
-
- // Receive errors on the error channel on a separate goroutine
- go func() {
- for err := range watcher.Errors {
- t.Fatalf("error received: %s", err)
- }
- }()
-
- // Receive events on the event channel on a separate goroutine
- eventstream := watcher.Events
- var deleteReceived counter
- go func() {
- for event := range eventstream {
- // Only count relevant events
- if event.Name == filepath.Clean(testDir) || event.Name == filepath.Clean(testFileAlreadyExists) {
- t.Logf("event received: %s", event)
- if event.Op&Remove == Remove {
- deleteReceived.increment()
- }
- } else {
- t.Logf("unexpected event received: %s", event)
- }
- }
- }()
-
- os.RemoveAll(testDir)
-
- // We expect this event to be received almost immediately, but let's wait 500 ms to be sure
- time.Sleep(500 * time.Millisecond)
- dReceived := deleteReceived.value()
- if dReceived < 2 {
- t.Fatalf("did not receive at least %d delete events, received %d after 500 ms", 2, dReceived)
- }
-}
-
-func TestFsnotifySubDir(t *testing.T) {
- watcher := newWatcher(t)
-
- // Create directory to watch
- testDir := tempMkdir(t)
- defer os.RemoveAll(testDir)
-
- testFile1 := filepath.Join(testDir, "TestFsnotifyFile1.testfile")
- testSubDir := filepath.Join(testDir, "sub")
- testSubDirFile := filepath.Join(testDir, "sub/TestFsnotifyFile1.testfile")
-
- // Receive errors on the error channel on a separate goroutine
- go func() {
- for err := range watcher.Errors {
- t.Fatalf("error received: %s", err)
- }
- }()
-
- // Receive events on the event channel on a separate goroutine
- eventstream := watcher.Events
- var createReceived, deleteReceived counter
- done := make(chan bool)
- go func() {
- for event := range eventstream {
- // Only count relevant events
- if event.Name == filepath.Clean(testDir) || event.Name == filepath.Clean(testSubDir) || event.Name == filepath.Clean(testFile1) {
- t.Logf("event received: %s", event)
- if event.Op&Create == Create {
- createReceived.increment()
- }
- if event.Op&Remove == Remove {
- deleteReceived.increment()
- }
- } else {
- t.Logf("unexpected event received: %s", event)
- }
- }
- done <- true
- }()
-
- addWatch(t, watcher, testDir)
-
- // Create sub-directory
- if err := os.Mkdir(testSubDir, 0777); err != nil {
- t.Fatalf("failed to create test sub-directory: %s", err)
- }
-
- // Create a file
- var f *os.File
- f, err := os.OpenFile(testFile1, os.O_WRONLY|os.O_CREATE, 0666)
- if err != nil {
- t.Fatalf("creating test file failed: %s", err)
- }
- f.Sync()
- f.Close()
-
- // Create a file (Should not see this! we are not watching subdir)
- var fs *os.File
- fs, err = os.OpenFile(testSubDirFile, os.O_WRONLY|os.O_CREATE, 0666)
- if err != nil {
- t.Fatalf("creating test file failed: %s", err)
- }
- fs.Sync()
- fs.Close()
-
- time.Sleep(200 * time.Millisecond)
-
- // Make sure receive deletes for both file and sub-directory
- os.RemoveAll(testSubDir)
- os.Remove(testFile1)
-
- // We expect this event to be received almost immediately, but let's wait 500 ms to be sure
- time.Sleep(500 * time.Millisecond)
- cReceived := createReceived.value()
- if cReceived != 2 {
- t.Fatalf("incorrect number of create events received after 500 ms (%d vs %d)", cReceived, 2)
- }
- dReceived := deleteReceived.value()
- if dReceived != 2 {
- t.Fatalf("incorrect number of delete events received after 500 ms (%d vs %d)", dReceived, 2)
- }
-
- // Try closing the fsnotify instance
- t.Log("calling Close()")
- watcher.Close()
- t.Log("waiting for the event channel to become closed...")
- select {
- case <-done:
- t.Log("event channel closed")
- case <-time.After(2 * time.Second):
- t.Fatal("event stream was not closed after 2 seconds")
- }
-}
-
-func TestFsnotifyRename(t *testing.T) {
- watcher := newWatcher(t)
-
- // Create directory to watch
- testDir := tempMkdir(t)
- defer os.RemoveAll(testDir)
-
- addWatch(t, watcher, testDir)
-
- // Receive errors on the error channel on a separate goroutine
- go func() {
- for err := range watcher.Errors {
- t.Fatalf("error received: %s", err)
- }
- }()
-
- testFile := filepath.Join(testDir, "TestFsnotifyEvents.testfile")
- testFileRenamed := filepath.Join(testDir, "TestFsnotifyEvents.testfileRenamed")
-
- // Receive events on the event channel on a separate goroutine
- eventstream := watcher.Events
- var renameReceived counter
- done := make(chan bool)
- go func() {
- for event := range eventstream {
- // Only count relevant events
- if event.Name == filepath.Clean(testDir) || event.Name == filepath.Clean(testFile) || event.Name == filepath.Clean(testFileRenamed) {
- if event.Op&Rename == Rename {
- renameReceived.increment()
- }
- t.Logf("event received: %s", event)
- } else {
- t.Logf("unexpected event received: %s", event)
- }
- }
- done <- true
- }()
-
- // Create a file
- // This should add at least one event to the fsnotify event queue
- var f *os.File
- f, err := os.OpenFile(testFile, os.O_WRONLY|os.O_CREATE, 0666)
- if err != nil {
- t.Fatalf("creating test file failed: %s", err)
- }
- f.Sync()
-
- f.WriteString("data")
- f.Sync()
- f.Close()
-
- // Add a watch for testFile
- addWatch(t, watcher, testFile)
-
- if err := testRename(testFile, testFileRenamed); err != nil {
- t.Fatalf("rename failed: %s", err)
- }
-
- // We expect this event to be received almost immediately, but let's wait 500 ms to be sure
- time.Sleep(500 * time.Millisecond)
- if renameReceived.value() == 0 {
- t.Fatal("fsnotify rename events have not been received after 500 ms")
- }
-
- // Try closing the fsnotify instance
- t.Log("calling Close()")
- watcher.Close()
- t.Log("waiting for the event channel to become closed...")
- select {
- case <-done:
- t.Log("event channel closed")
- case <-time.After(2 * time.Second):
- t.Fatal("event stream was not closed after 2 seconds")
- }
-
- os.Remove(testFileRenamed)
-}
-
-func TestFsnotifyRenameToCreate(t *testing.T) {
- watcher := newWatcher(t)
-
- // Create directory to watch
- testDir := tempMkdir(t)
- defer os.RemoveAll(testDir)
-
- // Create directory to get file
- testDirFrom := tempMkdir(t)
- defer os.RemoveAll(testDirFrom)
-
- addWatch(t, watcher, testDir)
-
- // Receive errors on the error channel on a separate goroutine
- go func() {
- for err := range watcher.Errors {
- t.Fatalf("error received: %s", err)
- }
- }()
-
- testFile := filepath.Join(testDirFrom, "TestFsnotifyEvents.testfile")
- testFileRenamed := filepath.Join(testDir, "TestFsnotifyEvents.testfileRenamed")
-
- // Receive events on the event channel on a separate goroutine
- eventstream := watcher.Events
- var createReceived counter
- done := make(chan bool)
- go func() {
- for event := range eventstream {
- // Only count relevant events
- if event.Name == filepath.Clean(testDir) || event.Name == filepath.Clean(testFile) || event.Name == filepath.Clean(testFileRenamed) {
- if event.Op&Create == Create {
- createReceived.increment()
- }
- t.Logf("event received: %s", event)
- } else {
- t.Logf("unexpected event received: %s", event)
- }
- }
- done <- true
- }()
-
- // Create a file
- // This should add at least one event to the fsnotify event queue
- var f *os.File
- f, err := os.OpenFile(testFile, os.O_WRONLY|os.O_CREATE, 0666)
- if err != nil {
- t.Fatalf("creating test file failed: %s", err)
- }
- f.Sync()
- f.Close()
-
- if err := testRename(testFile, testFileRenamed); err != nil {
- t.Fatalf("rename failed: %s", err)
- }
-
- // We expect this event to be received almost immediately, but let's wait 500 ms to be sure
- time.Sleep(500 * time.Millisecond)
- if createReceived.value() == 0 {
- t.Fatal("fsnotify create events have not been received after 500 ms")
- }
-
- // Try closing the fsnotify instance
- t.Log("calling Close()")
- watcher.Close()
- t.Log("waiting for the event channel to become closed...")
- select {
- case <-done:
- t.Log("event channel closed")
- case <-time.After(2 * time.Second):
- t.Fatal("event stream was not closed after 2 seconds")
- }
-
- os.Remove(testFileRenamed)
-}
-
-func TestFsnotifyRenameToOverwrite(t *testing.T) {
- switch runtime.GOOS {
- case "plan9", "windows":
- t.Skipf("skipping test on %q (os.Rename over existing file does not create event).", runtime.GOOS)
- }
-
- watcher := newWatcher(t)
-
- // Create directory to watch
- testDir := tempMkdir(t)
- defer os.RemoveAll(testDir)
-
- // Create directory to get file
- testDirFrom := tempMkdir(t)
- defer os.RemoveAll(testDirFrom)
-
- testFile := filepath.Join(testDirFrom, "TestFsnotifyEvents.testfile")
- testFileRenamed := filepath.Join(testDir, "TestFsnotifyEvents.testfileRenamed")
-
- // Create a file
- var fr *os.File
- fr, err := os.OpenFile(testFileRenamed, os.O_WRONLY|os.O_CREATE, 0666)
- if err != nil {
- t.Fatalf("creating test file failed: %s", err)
- }
- fr.Sync()
- fr.Close()
-
- addWatch(t, watcher, testDir)
-
- // Receive errors on the error channel on a separate goroutine
- go func() {
- for err := range watcher.Errors {
- t.Fatalf("error received: %s", err)
- }
- }()
-
- // Receive events on the event channel on a separate goroutine
- eventstream := watcher.Events
- var eventReceived counter
- done := make(chan bool)
- go func() {
- for event := range eventstream {
- // Only count relevant events
- if event.Name == filepath.Clean(testFileRenamed) {
- eventReceived.increment()
- t.Logf("event received: %s", event)
- } else {
- t.Logf("unexpected event received: %s", event)
- }
- }
- done <- true
- }()
-
- // Create a file
- // This should add at least one event to the fsnotify event queue
- var f *os.File
- f, err = os.OpenFile(testFile, os.O_WRONLY|os.O_CREATE, 0666)
- if err != nil {
- t.Fatalf("creating test file failed: %s", err)
- }
- f.Sync()
- f.Close()
-
- if err := testRename(testFile, testFileRenamed); err != nil {
- t.Fatalf("rename failed: %s", err)
- }
-
- // We expect this event to be received almost immediately, but let's wait 500 ms to be sure
- time.Sleep(500 * time.Millisecond)
- if eventReceived.value() == 0 {
- t.Fatal("fsnotify events have not been received after 500 ms")
- }
-
- // Try closing the fsnotify instance
- t.Log("calling Close()")
- watcher.Close()
- t.Log("waiting for the event channel to become closed...")
- select {
- case <-done:
- t.Log("event channel closed")
- case <-time.After(2 * time.Second):
- t.Fatal("event stream was not closed after 2 seconds")
- }
-
- os.Remove(testFileRenamed)
-}
-
-func TestRemovalOfWatch(t *testing.T) {
- // Create directory to watch
- testDir := tempMkdir(t)
- defer os.RemoveAll(testDir)
-
- // Create a file before watching directory
- testFileAlreadyExists := filepath.Join(testDir, "TestFsnotifyEventsExisting.testfile")
- {
- var f *os.File
- f, err := os.OpenFile(testFileAlreadyExists, os.O_WRONLY|os.O_CREATE, 0666)
- if err != nil {
- t.Fatalf("creating test file failed: %s", err)
- }
- f.Sync()
- f.Close()
- }
-
- watcher := newWatcher(t)
- defer watcher.Close()
-
- addWatch(t, watcher, testDir)
- if err := watcher.Remove(testDir); err != nil {
- t.Fatalf("Could not remove the watch: %v\n", err)
- }
-
- go func() {
- select {
- case ev := <-watcher.Events:
- t.Fatalf("We received event: %v\n", ev)
- case <-time.After(500 * time.Millisecond):
- t.Log("No event received, as expected.")
- }
- }()
-
- time.Sleep(200 * time.Millisecond)
- // Modify the file outside of the watched dir
- f, err := os.Open(testFileAlreadyExists)
- if err != nil {
- t.Fatalf("Open test file failed: %s", err)
- }
- f.WriteString("data")
- f.Sync()
- f.Close()
- if err := os.Chmod(testFileAlreadyExists, 0700); err != nil {
- t.Fatalf("chmod failed: %s", err)
- }
- time.Sleep(400 * time.Millisecond)
-}
-
-func TestFsnotifyAttrib(t *testing.T) {
- if runtime.GOOS == "windows" {
- t.Skip("attributes don't work on Windows.")
- }
-
- watcher := newWatcher(t)
-
- // Create directory to watch
- testDir := tempMkdir(t)
- defer os.RemoveAll(testDir)
-
- // Receive errors on the error channel on a separate goroutine
- go func() {
- for err := range watcher.Errors {
- t.Fatalf("error received: %s", err)
- }
- }()
-
- testFile := filepath.Join(testDir, "TestFsnotifyAttrib.testfile")
-
- // Receive events on the event channel on a separate goroutine
- eventstream := watcher.Events
- // The modifyReceived counter counts IsModify events that are not IsAttrib,
- // and the attribReceived counts IsAttrib events (which are also IsModify as
- // a consequence).
- var modifyReceived counter
- var attribReceived counter
- done := make(chan bool)
- go func() {
- for event := range eventstream {
- // Only count relevant events
- if event.Name == filepath.Clean(testDir) || event.Name == filepath.Clean(testFile) {
- if event.Op&Write == Write {
- modifyReceived.increment()
- }
- if event.Op&Chmod == Chmod {
- attribReceived.increment()
- }
- t.Logf("event received: %s", event)
- } else {
- t.Logf("unexpected event received: %s", event)
- }
- }
- done <- true
- }()
-
- // Create a file
- // This should add at least one event to the fsnotify event queue
- var f *os.File
- f, err := os.OpenFile(testFile, os.O_WRONLY|os.O_CREATE, 0666)
- if err != nil {
- t.Fatalf("creating test file failed: %s", err)
- }
- f.Sync()
-
- f.WriteString("data")
- f.Sync()
- f.Close()
-
- // Add a watch for testFile
- addWatch(t, watcher, testFile)
-
- if err := os.Chmod(testFile, 0700); err != nil {
- t.Fatalf("chmod failed: %s", err)
- }
-
- // We expect this event to be received almost immediately, but let's wait 500 ms to be sure
- // Creating/writing a file changes also the mtime, so IsAttrib should be set to true here
- time.Sleep(500 * time.Millisecond)
- if modifyReceived.value() != 0 {
- t.Fatal("received an unexpected modify event when creating a test file")
- }
- if attribReceived.value() == 0 {
- t.Fatal("fsnotify attribute events have not received after 500 ms")
- }
-
- // Modifying the contents of the file does not set the attrib flag (although eg. the mtime
- // might have been modified).
- modifyReceived.reset()
- attribReceived.reset()
-
- f, err = os.OpenFile(testFile, os.O_WRONLY, 0)
- if err != nil {
- t.Fatalf("reopening test file failed: %s", err)
- }
-
- f.WriteString("more data")
- f.Sync()
- f.Close()
-
- time.Sleep(500 * time.Millisecond)
-
- if modifyReceived.value() != 1 {
- t.Fatal("didn't receive a modify event after changing test file contents")
- }
-
- if attribReceived.value() != 0 {
- t.Fatal("did receive an unexpected attrib event after changing test file contents")
- }
-
- modifyReceived.reset()
- attribReceived.reset()
-
- // Doing a chmod on the file should trigger an event with the "attrib" flag set (the contents
- // of the file are not changed though)
- if err := os.Chmod(testFile, 0600); err != nil {
- t.Fatalf("chmod failed: %s", err)
- }
-
- time.Sleep(500 * time.Millisecond)
-
- if attribReceived.value() != 1 {
- t.Fatal("didn't receive an attribute change after 500ms")
- }
-
- // Try closing the fsnotify instance
- t.Log("calling Close()")
- watcher.Close()
- t.Log("waiting for the event channel to become closed...")
- select {
- case <-done:
- t.Log("event channel closed")
- case <-time.After(1e9):
- t.Fatal("event stream was not closed after 1 second")
- }
-
- os.Remove(testFile)
-}
-
-func TestFsnotifyClose(t *testing.T) {
- watcher := newWatcher(t)
- watcher.Close()
-
- var done int32
- go func() {
- watcher.Close()
- atomic.StoreInt32(&done, 1)
- }()
-
- time.Sleep(50e6) // 50 ms
- if atomic.LoadInt32(&done) == 0 {
- t.Fatal("double Close() test failed: second Close() call didn't return")
- }
-
- testDir := tempMkdir(t)
- defer os.RemoveAll(testDir)
-
- if err := watcher.Add(testDir); err == nil {
- t.Fatal("expected error on Watch() after Close(), got nil")
- }
-}
-
-func TestFsnotifyFakeSymlink(t *testing.T) {
- if runtime.GOOS == "windows" {
- t.Skip("symlinks don't work on Windows.")
- }
-
- watcher := newWatcher(t)
-
- // Create directory to watch
- testDir := tempMkdir(t)
- defer os.RemoveAll(testDir)
-
- var errorsReceived counter
- // Receive errors on the error channel on a separate goroutine
- go func() {
- for errors := range watcher.Errors {
- t.Logf("Received error: %s", errors)
- errorsReceived.increment()
- }
- }()
-
- // Count the CREATE events received
- var createEventsReceived, otherEventsReceived counter
- go func() {
- for ev := range watcher.Events {
- t.Logf("event received: %s", ev)
- if ev.Op&Create == Create {
- createEventsReceived.increment()
- } else {
- otherEventsReceived.increment()
- }
- }
- }()
-
- addWatch(t, watcher, testDir)
-
- if err := os.Symlink(filepath.Join(testDir, "zzz"), filepath.Join(testDir, "zzznew")); err != nil {
- t.Fatalf("Failed to create bogus symlink: %s", err)
- }
- t.Logf("Created bogus symlink")
-
- // We expect this event to be received almost immediately, but let's wait 500 ms to be sure
- time.Sleep(500 * time.Millisecond)
-
- // Should not be error, just no events for broken links (watching nothing)
- if errorsReceived.value() > 0 {
- t.Fatal("fsnotify errors have been received.")
- }
- if otherEventsReceived.value() > 0 {
- t.Fatal("fsnotify other events received on the broken link")
- }
-
- // Except for 1 create event (for the link itself)
- if createEventsReceived.value() == 0 {
- t.Fatal("fsnotify create events were not received after 500 ms")
- }
- if createEventsReceived.value() > 1 {
- t.Fatal("fsnotify more create events received than expected")
- }
-
- // Try closing the fsnotify instance
- t.Log("calling Close()")
- watcher.Close()
-}
-
-func TestCyclicSymlink(t *testing.T) {
- if runtime.GOOS == "windows" {
- t.Skip("symlinks don't work on Windows.")
- }
-
- watcher := newWatcher(t)
-
- testDir := tempMkdir(t)
- defer os.RemoveAll(testDir)
-
- link := path.Join(testDir, "link")
- if err := os.Symlink(".", link); err != nil {
- t.Fatalf("could not make symlink: %v", err)
- }
- addWatch(t, watcher, testDir)
-
- var createEventsReceived counter
- go func() {
- for ev := range watcher.Events {
- if ev.Op&Create == Create {
- createEventsReceived.increment()
- }
- }
- }()
-
- if err := os.Remove(link); err != nil {
- t.Fatalf("Error removing link: %v", err)
- }
-
- // It would be nice to be able to expect a delete event here, but kqueue has
- // no way for us to get events on symlinks themselves, because opening them
- // opens an fd to the file to which they point.
-
- if err := ioutil.WriteFile(link, []byte("foo"), 0700); err != nil {
- t.Fatalf("could not make symlink: %v", err)
- }
-
- // We expect this event to be received almost immediately, but let's wait 500 ms to be sure
- time.Sleep(500 * time.Millisecond)
-
- if got := createEventsReceived.value(); got == 0 {
- t.Errorf("want at least 1 create event got %v", got)
- }
-
- watcher.Close()
-}
-
-// TestConcurrentRemovalOfWatch tests that concurrent calls to RemoveWatch do not race.
-// See https://codereview.appspot.com/103300045/
-// go test -test.run=TestConcurrentRemovalOfWatch -test.cpu=1,1,1,1,1 -race
-func TestConcurrentRemovalOfWatch(t *testing.T) {
- if runtime.GOOS != "darwin" {
- t.Skip("regression test for race only present on darwin")
- }
-
- // Create directory to watch
- testDir := tempMkdir(t)
- defer os.RemoveAll(testDir)
-
- // Create a file before watching directory
- testFileAlreadyExists := filepath.Join(testDir, "TestFsnotifyEventsExisting.testfile")
- {
- var f *os.File
- f, err := os.OpenFile(testFileAlreadyExists, os.O_WRONLY|os.O_CREATE, 0666)
- if err != nil {
- t.Fatalf("creating test file failed: %s", err)
- }
- f.Sync()
- f.Close()
- }
-
- watcher := newWatcher(t)
- defer watcher.Close()
-
- addWatch(t, watcher, testDir)
-
- // Test that RemoveWatch can be invoked concurrently, with no data races.
- removed1 := make(chan struct{})
- go func() {
- defer close(removed1)
- watcher.Remove(testDir)
- }()
- removed2 := make(chan struct{})
- go func() {
- close(removed2)
- watcher.Remove(testDir)
- }()
- <-removed1
- <-removed2
-}
-
-func TestClose(t *testing.T) {
- // Regression test for #59 bad file descriptor from Close
- testDir := tempMkdir(t)
- defer os.RemoveAll(testDir)
-
- watcher := newWatcher(t)
- if err := watcher.Add(testDir); err != nil {
- t.Fatalf("Expected no error on Add, got %v", err)
- }
- err := watcher.Close()
- if err != nil {
- t.Fatalf("Expected no error on Close, got %v.", err)
- }
-}
-
-// TestRemoveWithClose tests if one can handle Remove events and, at the same
-// time, close Watcher object without any data races.
-func TestRemoveWithClose(t *testing.T) {
- testDir := tempMkdir(t)
- defer os.RemoveAll(testDir)
-
- const fileN = 200
- tempFiles := make([]string, 0, fileN)
- for i := 0; i < fileN; i++ {
- tempFiles = append(tempFiles, tempMkFile(t, testDir))
- }
- watcher := newWatcher(t)
- if err := watcher.Add(testDir); err != nil {
- t.Fatalf("Expected no error on Add, got %v", err)
- }
- startC, stopC := make(chan struct{}), make(chan struct{})
- errC := make(chan error)
- go func() {
- for {
- select {
- case <-watcher.Errors:
- case <-watcher.Events:
- case <-stopC:
- return
- }
- }
- }()
- go func() {
- <-startC
- for _, fileName := range tempFiles {
- os.Remove(fileName)
- }
- }()
- go func() {
- <-startC
- errC <- watcher.Close()
- }()
- close(startC)
- defer close(stopC)
- if err := <-errC; err != nil {
- t.Fatalf("Expected no error on Close, got %v.", err)
- }
-}
-
-func testRename(file1, file2 string) error {
- switch runtime.GOOS {
- case "windows", "plan9":
- return os.Rename(file1, file2)
- default:
- cmd := exec.Command("mv", file1, file2)
- return cmd.Run()
- }
-}
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