public async Task GetEmptyColumnHeaderAsyncTest() { using (var processDisplay = new CustomProcessDisplay(UnitTestInitializeCsv.Token)) { using (var test = new CsvFileReader(m_ValidSetting, processDisplay)) { await test.OpenAsync(processDisplay.CancellationToken); var result = await test.GetEmptyColumnHeaderAsync(processDisplay.CancellationToken); Assert.AreEqual(0, result.Count); } } }