public async Task FileWriteAllTextAsyncTest() { await _systemOperations.FileWriteAllTextAsync(_subdirectoryFilePath, _defaultFileContent); SubdirectoryVerifyDirectoryCreationAndOwnership(); _mockFileSystemOperations.Verify(x => x.WriteAllTextAsync(_subdirectoryFilePath, _defaultFileContent, It.IsAny <CancellationToken>()), Times.Once); }