问单元测试Graph API SDK c#

EN

 private readonly GraphServiceClient _client;
 IMailFolderMessagesCollectionPage msgs = await _client.Users[userEmailAddress].MailFolders[folderNameId]
                .Messages.Request().WithMaxRetry(5).WithMaxRetry(new TimeSpan(0, 0, 0, 5, 0)).Filter(emailFilter).GetAsync();

  private Mock<IGraphServiceClient> mockGsc;
  mockGsc = new Mock<IGraphServiceClient>();
  mockGsc.Setup(x => x.Users[It.IsAny<string>()].MailFolders[It.IsAny<string>].Messages.Request().WithMaxRetry(It.IsAny<int>).WithMaxRetry(It.IsAny<TimeSpan>).Filter(It.IsAny<string>).GetAsync()).Returns< IMailFolderMessagesCollectionPage>();