public async Task BlobExistsAsync_BlobNameGiven_BlobExists() { string blobName = NewRandomString(); _blobContainerRepository .Setup(_ => _.BlobExistsAsync(blobName, It.IsAny <string>())) .ReturnsAsync(true); bool exists = await _blobClient.BlobExistsAsync(blobName); exists .Should() .Be(true); }