[QUERY] Is it possible to set LastModified property from BlobContainerProperties?

[WillRock19]

Query/Question

I want to unit test a logic in my code. The logic gets a BlobContainerClient from the storage, get all blobs from it, and then filter the blobs for those who last modified date is before last week and delete those. I have somethind as the following:

                var blobContainerClient = storageWrapper.GetContainerReference(_connectionString, containerName); //returns a BlobContainerClient
                var dateLastWeek = DateTime.Now.AddDays(-7);

                var desiredBlobs = blobContainerClient
                    .GetBlobs()
                    .ToList()
                    .Where(x => x.Properties.LastModified < dateLastWeek)
                    .ToList();

But then I realized that the BlobContainerProperties.LastModified is a get only property, and non virtual (so I can't mock it's return).

Is there a way to create one of these objects with the LastModified date so I can use it in my test logic?

Environment:

• .Net Version: Full Framework 4.8
• New version: Azure.Storage.Blobs v12.8.0
• IDE and version : Visual Studio 16.8.5

[ghost]

Thanks for the feedback! We are routing this to the appropriate team for follow-up. cc @xgithubtriage.

Issue Details

---

Query/Question

I want to unit test a logic in my code. The logic gets a BlobContainerClient from the storage, get all blobs from it, and then filter the blobs for those who last modified date is before last week and delete those. I have somethind as the following:

                var blobContainerClient = storageWrapper.GetContainerReference(_connectionString, containerName); //returns a BlobContainerClient
                var dateLastWeek = DateTime.Now.AddDays(-7);

                var desiredBlobs = blobContainerClient
                    .GetBlobs()
                    .ToList()
                    .Where(x => x.Properties.LastModified < dateLastWeek)
                    .ToList();

But then I realized that the BlobContainerProperties.LastModified is a get only property, and not virtual. Is there a way to fake it so I can test my logic?

Environment:

• .Net Version: Full Framework 4.8
• New version: Azure.Storage.Blobs v12.8.0
• IDE and version : Visual Studio 16.8.5

Author:	WillRock19
Assignees:	-
Labels:	Client, Service Attention, Storage, customer-reported, needs-team-attention, needs-triage, question
Milestone:	-

[seanmcc-msft]

Hi @WillRock19,

To create a BlobContainerProperties for testing purposes, I recommend using BlobsModelFactory.BlobContainerProperties()

You can then create a mock BlobContainerClient, and set it up to return the BlobContainerProperties in question. BlobContainerClient.GetProperties() and BlobContainerClient.GetPropertiesAsync() are virtual.

-Sean

[seanmcc-msft]

You can create a BlobItemProperties for testing with BlobsModelFactory.BlobItem(). You can create the BlobItemProperties with BlobsModelFactory.BlobItemProperties().

[seanmcc-msft]

You can use Azure.Core.PageResponseEnumerator. An example of this is here - https://github.com/Azure/azure-sdk-for-net/blob/master/sdk/storage/Azure.Storage.Blobs.ChangeFeed/tests/ChangeFeedTests.cs#L73

[WillRock19]

@seanmcc-msft thanks for the answers! I'm sorry to say I've tried to remove the question from this topic and created a new one, so it could be easily found by people that may strougle with the same issue. I'm not able to delete the other topic (here it is: #20124), and I'm sorry about the confusion.

[WillRock19]

@seanmcc-msft, I've tried your sugestion, but the Azure.Core.PageResponseEnumerator is internal. Is that right?

[seanmcc-msft]

@tg-msft

[tg-msft]

https://github.com/Azure/azure-sdk-for-net/blob/master/sdk/core/Azure.Core/samples/Mocking.md#creating-a-mock-of-the-method-that-returns-pageable has an example of mocking Pageable<T>.

[WillRock19]

It worked! Thank you very much :)