}

				file = testCase.writeToFile(dirName, fileName, t)
			}

			go changeFile()
			// expect an update by MODIFY inotify event
			expectUpdate(t, ch, testCase)

			if watchDir {
				go changeFileName(dirName, fileName, fileName+"_ch", t)
				// expect an update by MOVED_FROM inotify event cause changing file name
				expectEmptyUpdate(t, ch)
				// expect an update by MOVED_TO inotify event cause changing file name