test case that shows problems with dir watch on bsd

diff --git a/fsnotify_test.go b/fsnotify_test.go
index 573ac6b2baf122e2eaedb5dbe527ca0cb84e06c0..eccf7366f9fade97e248c8e7f66246c8ef271cde 100644 (file)
--- a/fsnotify_test.go
+++ b/fsnotify_test.go
@@ -11,6 +11,138 @@ import (
        "time"
 )
 
+func TestFsnotifyMultipleOperations(t *testing.T) {
+       // Create an fsnotify watcher instance and initialize it
+       watcher, err := NewWatcher()
+       if err != nil {
+               t.Fatalf("NewWatcher() failed: %s", err)
+       }
+
+       // Receive errors on the error channel on a separate goroutine
+       go func() {
+               for err := range watcher.Error {
+                       t.Fatalf("error received: %s", err)
+               }
+       }()
+
+       const testDir string = "_test"
+       const testDirToMoveFiles string = "_test2"
+
+       // Create directory to watch
+       if os.Mkdir(testDir, 0777) != nil {
+               t.Fatalf("Failed to create test directory: %s", err)
+       }
+       defer os.RemoveAll(testDir)
+
+       // Create directory to that's not watched
+       if os.Mkdir(testDirToMoveFiles, 0777) != nil {
+               t.Fatalf("Failed to create test directory: %s", err)
+       }
+       defer os.RemoveAll(testDirToMoveFiles)
+
+       const testFile string = "_test/TestFsnotifySeq.testfile"
+       const testFileRenamed string = "_test2/TestFsnotifySeqRename.testfile"
+
+       // Add a watch for testDir
+       err = watcher.Watch(testDir)
+       if err != nil {
+               t.Fatalf("Watcher.Watch() failed: %s", err)
+       }
+       // Receive events on the event channel on a separate goroutine
+       eventstream := watcher.Event
+       var createReceived = 0
+       var modifyReceived = 0
+       var deleteReceived = 0
+       var renameReceived = 0
+       done := make(chan bool)
+       go func() {
+               for event := range eventstream {
+                       // Only count relevant events
+                       if event.Name == testDir || event.Name == testFile {
+                               t.Logf("event received: %s", event)
+                               if event.IsDelete() {
+                                       deleteReceived++
+                               }
+                               if event.IsModify() {
+                                       modifyReceived++
+                               }
+                               if event.IsCreate() {
+                                       createReceived++
+                               }
+                               if event.IsRename() {
+                                       renameReceived++
+                               }
+                       } 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()
+
+       time.Sleep(50 * time.Millisecond) // give system time to sync write change before delete
+
+       cmd := exec.Command("mv", testFile, testFileRenamed)
+       err = cmd.Run()
+       if err != nil {
+               t.Fatalf("rename failed: %s", err)
+       }
+
+  // Modify the file outside of the watched dir
+       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)
+       if createReceived != 2 {
+               t.Fatalf("incorrect number of create events received after 500 ms (%d vs %d)", createReceived, 2)
+       }
+       if modifyReceived != 1 {
+               t.Fatalf("incorrect number of modify events received after 500 ms (%d vs %d)", modifyReceived, 1)
+       }
+       if deleteReceived != 0 {
+               t.Fatalf("incorrect number of delete events received after 500 ms (%d vs %d)", deleteReceived, 0)
+       }
+  if renameReceived != 1 {
+               t.Fatalf("incorrect number of rename events received after 500 ms (%d vs %d)", renameReceived, 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) {
        // Create an fsnotify watcher instance and initialize it
        watcher, err := NewWatcher()