Test: Rename file

fsnotify_test.go

@@ -168,6 +168,85 @@ func TestFsnotifyDirOnly(t *testing.T) {
 	}
 }
 
+func TestFsnotifyRename(t *testing.T) {
+	// Create an fsnotify watcher instance and initialize it
+	watcher, err := NewWatcher()
+	if err != nil {
+		t.Fatalf("NewWatcher() failed: %s", err)
+	}
+
+	const testDir string = "_test"
+
+	// Add a watch for testDir
+	err = watcher.Watch(testDir)
+	if err != nil {
+		t.Fatalf("Watcher.Watch() 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 testFile string = "_test/TestFsnotifyEvents.testfile"
+	const testFileRenamed string = "_test/TestFsnotifyEvents.testfileRenamed"
+
+	// Receive events on the event channel on a separate goroutine
+	eventstream := watcher.Event
+	var eventsReceived = 0
+	done := make(chan bool)
+	go func() {
+		for event := range eventstream {
+			// Only count relevant events
+			if event.Name == testDir || event.Name == testFile {
+				eventsReceived++
+				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()
+
+    os.Rename(testFile, testFileRenamed)
+
+	os.Remove(testFileRenamed)
+
+	// We expect this event to be received almost immediately, but let's wait 500 ms to be sure
+	time.Sleep(500e6) // 500 ms
+	if eventsReceived == 0 {
+		t.Fatal("fsnotify event hasn't been received after 500 ms")
+	}
+
+	t.Logf("Received %d events.", eventsReceived)
+
+	// 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")
+	}
+}
+
 func TestFsnotifyClose(t *testing.T) {
 	watcher, _ := NewWatcher()
 	watcher.Close()