public async Task GetAsync_BlobNameGiven_ReturnsStream()
{
string blobName = NewRandomString();
MemoryStream memoryStream = new MemoryStream(0);
_cloudBlob.Setup(_ => _.OpenReadAsync(null, null, null))
.ReturnsAsync(memoryStream);
_blobContainerRepository
.Setup(_ => _.GetBlobReferenceFromServerAsync(blobName, It.IsAny <string>()))
.ReturnsAsync(_cloudBlob.Object);
Stream stream = await _blobClient.GetAsync(blobName);
_blobContainerRepository.Verify(_ => _.GetBlobReferenceFromServerAsync(blobName, It.IsAny <string>()));
stream
.Should()
.Be(memoryStream);
}