public async Task AppendBlobReadStreamBasicTestAsync() { byte[] buffer = GetRandomBuffer(4 * 1024 * 1024); CloudBlobContainer container = GetRandomContainerReference(); try { await container.CreateAsync(); CloudAppendBlob blob = container.GetAppendBlobReference("blob1"); await blob.CreateOrReplaceAsync(); using (MemoryStream wholeBlob = new MemoryStream(buffer)) { #if !FACADE_NETCORE await blob.AppendBlockAsync(wholeBlob); #else await blob.AppendBlockAsync(wholeBlob, null, null, null, null, CancellationToken.None); #endif } using (MemoryStream wholeBlob = new MemoryStream(buffer)) { using (Stream blobStream = (await blob.OpenReadAsync())) { TestHelper.AssertStreamsAreEqual(wholeBlob, blobStream); } } } finally { container.DeleteIfExistsAsync().Wait(); } }
public async Task AppendBlobReadStreamSeekTestAsync() { byte[] buffer = GetRandomBuffer(3 * 1024 * 1024); CloudBlobContainer container = GetRandomContainerReference(); try { await container.CreateAsync(); CloudAppendBlob blob = container.GetAppendBlobReference("blob1"); await blob.CreateOrReplaceAsync(); blob.StreamMinimumReadSizeInBytes = 2 * 1024 * 1024; using (MemoryStream wholeBlob = new MemoryStream(buffer)) { await blob.AppendBlockAsync(wholeBlob); } OperationContext opContext = new OperationContext(); using (Stream blobStream = await blob.OpenReadAsync(null, null, opContext)) { #if WINDOWS_RT int attempts = await BlobReadStreamSeekTestAsync(blobStream.AsRandomAccessStream(), blob.StreamMinimumReadSizeInBytes, buffer); #else int attempts = await BlobReadStreamSeekTestAsync(blobStream, blob.StreamMinimumReadSizeInBytes, buffer); #endif TestHelper.AssertNAttempts(opContext, attempts); } } finally { container.DeleteIfExistsAsync().Wait(); } }
public static async Task UploadTextAsync(CloudBlob blob, string text, Encoding encoding, AccessCondition accessCondition = null, BlobRequestOptions options = null, OperationContext operationContext = null) { byte[] textAsBytes = encoding.GetBytes(text); using (MemoryStream stream = new MemoryStream()) { await stream.WriteAsync(textAsBytes, 0, textAsBytes.Length); if (blob.BlobType == BlobType.PageBlob) { int lastPageSize = (int)(stream.Length % 512); if (lastPageSize != 0) { byte[] padding = new byte[512 - lastPageSize]; await stream.WriteAsync(padding, 0, padding.Length); } } stream.Seek(0, SeekOrigin.Begin); blob.ServiceClient.DefaultRequestOptions.ParallelOperationThreadCount = 2; if (blob.BlobType == BlobType.AppendBlob) { CloudAppendBlob blob1 = blob as CloudAppendBlob; await blob1.CreateOrReplaceAsync(); #if !FACADE_NETCORE await blob1.AppendBlockAsync(stream, null); #else await blob1.AppendBlockAsync(stream, null, null, null, null, CancellationToken.None); #endif } else if (blob.BlobType == BlobType.PageBlob) { CloudPageBlob pageBlob = blob as CloudPageBlob; await pageBlob.UploadFromStreamAsync(stream, accessCondition, options, operationContext); } else { CloudBlockBlob blockBlob = blob as CloudBlockBlob; await blockBlob.UploadFromStreamAsync(stream, accessCondition, options, operationContext); } } }
public async Task UseTransactionalCRC64PutTestAsync() { BlobRequestOptions optionsWithNoCRC64 = new BlobRequestOptions() { ChecksumOptions = new ChecksumOptions { UseTransactionalCRC64 = false } }; BlobRequestOptions optionsWithCRC64 = new BlobRequestOptions() { ChecksumOptions = new ChecksumOptions { UseTransactionalCRC64 = true } }; byte[] buffer = GetRandomBuffer(1024); Crc64Wrapper hasher = new Crc64Wrapper(); hasher.UpdateHash(buffer, 0, buffer.Length); string crc64 = hasher.ComputeHash(); string lastCheckCRC64 = null; int checkCount = 0; OperationContext opContextWithCRC64Check = new OperationContext(); opContextWithCRC64Check.SendingRequest += (_, args) => { if (HttpRequestParsers.GetContentLength(args.Request) >= buffer.Length) { lastCheckCRC64 = HttpRequestParsers.GetContentCRC64(args.Request); checkCount++; } }; OperationContext opContextWithCRC64CheckAndInjectedFailure = new OperationContext(); opContextWithCRC64CheckAndInjectedFailure.SendingRequest += (_, args) => { args.Response.Headers.Remove(Constants.HeaderConstants.ContentCrc64Header); args.Request.Headers.TryAddWithoutValidation(Constants.HeaderConstants.ContentCrc64Header, "dummy"); if (HttpRequestParsers.GetContentLength(args.Request) >= buffer.Length) { lastCheckCRC64 = HttpRequestParsers.GetContentCRC64(args.Request); checkCount++; } }; CloudBlobContainer container = GetRandomContainerReference(); try { await container.CreateAsync(); CloudBlockBlob blockBlob = container.GetBlockBlobReference("blob1"); List <string> blockIds = GetBlockIdList(3); checkCount = 0; using (Stream blockData = new MemoryStream(buffer)) { lastCheckCRC64 = "invalid_CRC64"; await blockBlob.PutBlockAsync(blockIds[0], blockData, null, null, optionsWithNoCRC64, opContextWithCRC64Check); Assert.IsNull(lastCheckCRC64); lastCheckCRC64 = "invalid_CRC64"; blockData.Seek(0, SeekOrigin.Begin); await blockBlob.PutBlockAsync(blockIds[1], blockData, null, null, optionsWithCRC64, opContextWithCRC64Check); Assert.AreEqual(crc64, lastCheckCRC64); blockData.Seek(0, SeekOrigin.Begin); await TestHelper.ExpectedExceptionAsync <StorageException>( () => blockBlob.PutBlockAsync(blockIds[1], blockData, null, null, optionsWithCRC64, opContextWithCRC64CheckAndInjectedFailure), "Calculated CRC64 does not match existing property" ); lastCheckCRC64 = "invalid_CRC64"; blockData.Seek(0, SeekOrigin.Begin); await blockBlob.PutBlockAsync(blockIds[2], blockData, new Checksum(crc64 : crc64), null, optionsWithNoCRC64, opContextWithCRC64Check); Assert.AreEqual(crc64, lastCheckCRC64); } Assert.AreEqual(3, checkCount); checkCount = 0; CloudAppendBlob appendBlob = container.GetAppendBlobReference("blob2"); await appendBlob.CreateOrReplaceAsync(); checkCount = 0; using (Stream blockData = new MemoryStream(buffer)) { lastCheckCRC64 = "invalid_CRC64"; await appendBlob.AppendBlockAsync(blockData, null, null, optionsWithNoCRC64, opContextWithCRC64Check); Assert.IsNull(lastCheckCRC64); lastCheckCRC64 = "invalid_CRC64"; blockData.Seek(0, SeekOrigin.Begin); await appendBlob.AppendBlockAsync(blockData, null, null, optionsWithCRC64, opContextWithCRC64Check); Assert.AreEqual(crc64, lastCheckCRC64); blockData.Seek(0, SeekOrigin.Begin); await TestHelper.ExpectedExceptionAsync <StorageException>( () => appendBlob.AppendBlockAsync(blockData, null, null, optionsWithCRC64, opContextWithCRC64CheckAndInjectedFailure), "Calculated CRC64 does not match existing property" ); lastCheckCRC64 = "invalid_CRC64"; blockData.Seek(0, SeekOrigin.Begin); await appendBlob.AppendBlockAsync(blockData, new Checksum(crc64 : crc64), null, optionsWithNoCRC64, opContextWithCRC64Check); Assert.AreEqual(crc64, lastCheckCRC64); } Assert.AreEqual(3, checkCount); CloudPageBlob pageBlob = container.GetPageBlobReference("blob3"); await pageBlob.CreateAsync(buffer.Length); checkCount = 0; using (Stream pageData = new MemoryStream(buffer)) { lastCheckCRC64 = "invalid_CRC64"; await pageBlob.WritePagesAsync(pageData, 0, null, null, optionsWithNoCRC64, opContextWithCRC64Check); Assert.IsNull(lastCheckCRC64); lastCheckCRC64 = "invalid_CRC64"; pageData.Seek(0, SeekOrigin.Begin); await pageBlob.WritePagesAsync(pageData, 0, null, null, optionsWithCRC64, opContextWithCRC64Check); Assert.AreEqual(crc64, lastCheckCRC64); pageData.Seek(0, SeekOrigin.Begin); await TestHelper.ExpectedExceptionAsync <StorageException>( () => pageBlob.WritePagesAsync(pageData, 0, null, null, optionsWithCRC64, opContextWithCRC64CheckAndInjectedFailure), "Calculated CRC64 does not match existing property" ); lastCheckCRC64 = "invalid_CRC64"; pageData.Seek(0, SeekOrigin.Begin); await pageBlob.WritePagesAsync(pageData, 0, new Checksum(crc64 : crc64), null, optionsWithNoCRC64, opContextWithCRC64Check); Assert.AreEqual(crc64, lastCheckCRC64); } Assert.AreEqual(3, checkCount); lastCheckCRC64 = null; blockBlob = container.GetBlockBlobReference("blob4"); checkCount = 0; using (Stream blobStream = await blockBlob.OpenWriteAsync(null, optionsWithCRC64, opContextWithCRC64Check)) { blobStream.Write(buffer, 0, buffer.Length); blobStream.Write(buffer, 0, buffer.Length); } Assert.IsNotNull(lastCheckCRC64); Assert.AreEqual(1, checkCount); lastCheckCRC64 = "invalid_CRC64"; blockBlob = container.GetBlockBlobReference("blob5"); checkCount = 0; using (Stream blobStream = await blockBlob.OpenWriteAsync(null, optionsWithNoCRC64, opContextWithCRC64Check)) { blobStream.Write(buffer, 0, buffer.Length); blobStream.Write(buffer, 0, buffer.Length); } Assert.IsNull(lastCheckCRC64); Assert.AreEqual(1, checkCount); lastCheckCRC64 = null; pageBlob = container.GetPageBlobReference("blob6"); checkCount = 0; using (Stream blobStream = await pageBlob.OpenWriteAsync(buffer.Length * 3, null, optionsWithCRC64, opContextWithCRC64Check)) { blobStream.Write(buffer, 0, buffer.Length); blobStream.Write(buffer, 0, buffer.Length); } Assert.IsNotNull(lastCheckCRC64); Assert.AreEqual(1, checkCount); lastCheckCRC64 = "invalid_CRC64"; pageBlob = container.GetPageBlobReference("blob7"); checkCount = 0; using (Stream blobStream = await pageBlob.OpenWriteAsync(buffer.Length * 3, null, optionsWithNoCRC64, opContextWithCRC64Check)) { blobStream.Write(buffer, 0, buffer.Length); blobStream.Write(buffer, 0, buffer.Length); } Assert.IsNull(lastCheckCRC64); Assert.AreEqual(1, checkCount); } finally { await container.DeleteIfExistsAsync(); } }
public async Task UseTransactionalMD5PutTestAsync() { BlobRequestOptions optionsWithNoMD5 = new BlobRequestOptions() { UseTransactionalMD5 = false, }; BlobRequestOptions optionsWithMD5 = new BlobRequestOptions() { UseTransactionalMD5 = true, }; byte[] buffer = GetRandomBuffer(1024); MD5 hasher = MD5.Create(); string md5 = Convert.ToBase64String(hasher.ComputeHash(buffer)); string lastCheckMD5 = null; int checkCount = 0; OperationContext opContextWithMD5Check = new OperationContext(); opContextWithMD5Check.SendingRequest += (_, args) => { if (HttpRequestParsers.GetContentLength(args.Request) >= buffer.Length) { lastCheckMD5 = HttpRequestParsers.GetContentMD5(args.Request); checkCount++; } }; CloudBlobContainer container = GetRandomContainerReference(); try { await container.CreateAsync(); CloudBlockBlob blockBlob = container.GetBlockBlobReference("blob1"); List <string> blockIds = GetBlockIdList(3); checkCount = 0; using (Stream blockData = new MemoryStream(buffer)) { lastCheckMD5 = "invalid_md5"; await blockBlob.PutBlockAsync(blockIds[0], blockData, null, null, optionsWithNoMD5, opContextWithMD5Check); Assert.IsNull(lastCheckMD5); lastCheckMD5 = "invalid_md5"; blockData.Seek(0, SeekOrigin.Begin); await blockBlob.PutBlockAsync(blockIds[1], blockData, null, null, optionsWithMD5, opContextWithMD5Check); Assert.AreEqual(md5, lastCheckMD5); lastCheckMD5 = "invalid_md5"; blockData.Seek(0, SeekOrigin.Begin); await blockBlob.PutBlockAsync(blockIds[2], blockData, md5, null, optionsWithNoMD5, opContextWithMD5Check); Assert.AreEqual(md5, lastCheckMD5); } Assert.AreEqual(3, checkCount); checkCount = 0; CloudAppendBlob appendBlob = container.GetAppendBlobReference("blob2"); await appendBlob.CreateOrReplaceAsync(); checkCount = 0; using (Stream blockData = new MemoryStream(buffer)) { lastCheckMD5 = "invalid_md5"; await appendBlob.AppendBlockAsync(blockData, null, null, optionsWithNoMD5, opContextWithMD5Check); Assert.IsNull(lastCheckMD5); lastCheckMD5 = "invalid_md5"; blockData.Seek(0, SeekOrigin.Begin); await appendBlob.AppendBlockAsync(blockData, null, null, optionsWithMD5, opContextWithMD5Check); Assert.AreEqual(md5, lastCheckMD5); lastCheckMD5 = "invalid_md5"; blockData.Seek(0, SeekOrigin.Begin); await appendBlob.AppendBlockAsync(blockData, md5, null, optionsWithNoMD5, opContextWithMD5Check); Assert.AreEqual(md5, lastCheckMD5); } Assert.AreEqual(3, checkCount); CloudPageBlob pageBlob = container.GetPageBlobReference("blob3"); await pageBlob.CreateAsync(buffer.Length); checkCount = 0; using (Stream pageData = new MemoryStream(buffer)) { lastCheckMD5 = "invalid_md5"; await pageBlob.WritePagesAsync(pageData, 0, null, null, optionsWithNoMD5, opContextWithMD5Check); Assert.IsNull(lastCheckMD5); lastCheckMD5 = "invalid_md5"; pageData.Seek(0, SeekOrigin.Begin); await pageBlob.WritePagesAsync(pageData, 0, null, null, optionsWithMD5, opContextWithMD5Check); Assert.AreEqual(md5, lastCheckMD5); lastCheckMD5 = "invalid_md5"; pageData.Seek(0, SeekOrigin.Begin); await pageBlob.WritePagesAsync(pageData, 0, md5, null, optionsWithNoMD5, opContextWithMD5Check); Assert.AreEqual(md5, lastCheckMD5); } Assert.AreEqual(3, checkCount); lastCheckMD5 = null; blockBlob = container.GetBlockBlobReference("blob4"); checkCount = 0; using (Stream blobStream = await blockBlob.OpenWriteAsync(null, optionsWithMD5, opContextWithMD5Check)) { blobStream.Write(buffer, 0, buffer.Length); blobStream.Write(buffer, 0, buffer.Length); } Assert.IsNotNull(lastCheckMD5); Assert.AreEqual(1, checkCount); lastCheckMD5 = "invalid_md5"; blockBlob = container.GetBlockBlobReference("blob5"); checkCount = 0; using (Stream blobStream = await blockBlob.OpenWriteAsync(null, optionsWithNoMD5, opContextWithMD5Check)) { blobStream.Write(buffer, 0, buffer.Length); blobStream.Write(buffer, 0, buffer.Length); } Assert.IsNull(lastCheckMD5); Assert.AreEqual(1, checkCount); lastCheckMD5 = null; pageBlob = container.GetPageBlobReference("blob6"); checkCount = 0; using (Stream blobStream = await pageBlob.OpenWriteAsync(buffer.Length * 3, null, optionsWithMD5, opContextWithMD5Check)) { blobStream.Write(buffer, 0, buffer.Length); blobStream.Write(buffer, 0, buffer.Length); } Assert.IsNotNull(lastCheckMD5); Assert.AreEqual(1, checkCount); lastCheckMD5 = "invalid_md5"; pageBlob = container.GetPageBlobReference("blob7"); checkCount = 0; using (Stream blobStream = await pageBlob.OpenWriteAsync(buffer.Length * 3, null, optionsWithNoMD5, opContextWithMD5Check)) { blobStream.Write(buffer, 0, buffer.Length); blobStream.Write(buffer, 0, buffer.Length); } Assert.IsNull(lastCheckMD5); Assert.AreEqual(1, checkCount); } finally { await container.DeleteIfExistsAsync(); } }
public async Task AppendBlobReadLockToETagTestAsync() { byte[] outBuffer = new byte[1 * 1024 * 1024]; byte[] buffer = GetRandomBuffer(2 * outBuffer.Length); CloudBlobContainer container = GetRandomContainerReference(); try { await container.CreateAsync(); CloudAppendBlob blob = container.GetAppendBlobReference("blob1"); await blob.CreateOrReplaceAsync(); blob.StreamMinimumReadSizeInBytes = outBuffer.Length; using (MemoryStream wholeBlob = new MemoryStream(buffer)) { #if !FACADE_NETCORE await blob.AppendBlockAsync(wholeBlob); #else await blob.AppendBlockAsync(wholeBlob, string.Empty, null, null, null, CancellationToken.None); #endif } OperationContext opContext = new OperationContext(); using (Stream blobStream = await blob.OpenReadAsync(null, null, opContext)) { Stream blobStreamForRead = blobStream; await blobStreamForRead.ReadAsync(outBuffer, 0, outBuffer.Length); await blob.SetMetadataAsync(); await TestHelper.ExpectedExceptionAsync( async() => await blobStreamForRead.ReadAsync(outBuffer, 0, outBuffer.Length), opContext, "Blob read stream should fail if blob is modified during read", HttpStatusCode.PreconditionFailed); } opContext = new OperationContext(); using (Stream blobStream = await blob.OpenReadAsync(null, null, opContext)) { Stream blobStreamForRead = blobStream; long length = blobStreamForRead.Length; await blob.SetMetadataAsync(); await TestHelper.ExpectedExceptionAsync( async() => await blobStreamForRead.ReadAsync(outBuffer, 0, outBuffer.Length), opContext, "Blob read stream should fail if blob is modified during read", HttpStatusCode.PreconditionFailed); } opContext = new OperationContext(); AccessCondition accessCondition = AccessCondition.GenerateIfNotModifiedSinceCondition(DateTimeOffset.Now.Subtract(TimeSpan.FromHours(1))); await blob.SetMetadataAsync(); await TestHelper.ExpectedExceptionAsync( async() => await blob.OpenReadAsync(accessCondition, null, opContext), opContext, "Blob read stream should fail if blob is modified during read", HttpStatusCode.PreconditionFailed); } finally { container.DeleteIfExistsAsync().Wait(); } }
public async Task CloudBlobSoftDeleteNoSnapshotTask() { CloudBlobContainer container = GetRandomContainerReference(); try { //Enables a delete retention policy on the blob with 1 day of default retention days container.ServiceClient.EnableSoftDelete(); await container.CreateAsync(); // Upload some data to the blob. MemoryStream originalData = new MemoryStream(GetRandomBuffer(1024)); CloudAppendBlob appendBlob = container.GetAppendBlobReference(BlobName); await appendBlob.CreateOrReplaceAsync(); await appendBlob.AppendBlockAsync(originalData, null); CloudBlob blob = container.GetBlobReference(BlobName); Assert.IsTrue(await blob.ExistsAsync()); Assert.IsFalse(blob.IsDeleted); await blob.DeleteAsync(); Assert.IsFalse(await blob.ExistsAsync()); int blobCount = 0; BlobContinuationToken ct = null; do { foreach (IListBlobItem item in (await container.ListBlobsSegmentedAsync (null, true, BlobListingDetails.All, null, ct, null, null)) .Results .ToList()) { CloudAppendBlob blobItem = (CloudAppendBlob)item; Assert.AreEqual(blobItem.Name, BlobName); Assert.IsTrue(blobItem.IsDeleted); Assert.IsNotNull(blobItem.Properties.DeletedTime); Assert.AreEqual(blobItem.Properties.RemainingDaysBeforePermanentDelete, 0); blobCount++; } } while (ct != null); Assert.AreEqual(blobCount, 1); await blob.UndeleteAsync(); await blob.FetchAttributesAsync(); Assert.IsFalse(blob.IsDeleted); Assert.IsNull(blob.Properties.DeletedTime); Assert.IsNull(blob.Properties.RemainingDaysBeforePermanentDelete); blobCount = 0; ct = null; do { foreach (IListBlobItem item in (await container.ListBlobsSegmentedAsync (null, true, BlobListingDetails.All, null, ct, null, null)) .Results .ToList()) { CloudAppendBlob blobItem = (CloudAppendBlob)item; Assert.AreEqual(blobItem.Name, BlobName); Assert.IsFalse(blobItem.IsDeleted); Assert.IsNull(blobItem.Properties.DeletedTime); Assert.IsNull(blobItem.Properties.RemainingDaysBeforePermanentDelete); blobCount++; } } while (ct != null); Assert.AreEqual(blobCount, 1); } finally { container.ServiceClient.DisableSoftDelete(); await container.DeleteAsync(); } }
public async Task CloudBlobSnapshotTask() { CloudBlobContainer container = GetRandomContainerReference(); try { await container.CreateAsync(); var blobName = GetRandomBlobName(); MemoryStream originalData = new MemoryStream(GetRandomBuffer(1024)); CloudAppendBlob appendBlob = container.GetAppendBlobReference(blobName); await appendBlob.CreateOrReplaceAsync(); await appendBlob.AppendBlockAsync(originalData, null); CloudBlob blob = container.GetBlobReference(blobName); await blob.FetchAttributesAsync(); CloudBlob snapshot1 = await blob.SnapshotAsync(); Assert.AreEqual(blob.Properties.ETag, snapshot1.Properties.ETag); Assert.AreEqual(blob.Properties.LastModified, snapshot1.Properties.LastModified); Assert.IsTrue(snapshot1.IsSnapshot); Assert.IsNotNull(snapshot1.SnapshotTime, "Snapshot does not have SnapshotTime set"); Assert.AreEqual(blob.Uri, snapshot1.Uri); Assert.AreNotEqual(blob.SnapshotQualifiedUri, snapshot1.SnapshotQualifiedUri); Assert.AreNotEqual(snapshot1.Uri, snapshot1.SnapshotQualifiedUri); Assert.IsTrue(snapshot1.SnapshotQualifiedUri.Query.Contains("snapshot")); CloudBlob snapshot2 = await blob.SnapshotAsync(); Assert.IsTrue(snapshot2.SnapshotTime.Value > snapshot1.SnapshotTime.Value); await snapshot1.FetchAttributesAsync(); await snapshot2.FetchAttributesAsync(); await blob.FetchAttributesAsync(); AssertAreEqual(snapshot1.Properties, blob.Properties); CloudBlob snapshot1Clone = new CloudBlob(new Uri(blob.Uri + "?snapshot=" + snapshot1.SnapshotTime.Value.ToString("O")), blob.ServiceClient.Credentials); Assert.IsNotNull(snapshot1Clone.SnapshotTime, "Snapshot clone does not have SnapshotTime set"); Assert.AreEqual(snapshot1.SnapshotTime.Value, snapshot1Clone.SnapshotTime.Value); await snapshot1Clone.FetchAttributesAsync(); AssertAreEqual(snapshot1.Properties, snapshot1Clone.Properties); CloudBlob snapshotCopy = container.GetBlobReference("blob2"); await snapshotCopy.StartCopyAsync(snapshot1.Uri, null, null, null, null); await WaitForCopyAsync(snapshotCopy); Assert.AreEqual(CopyStatus.Success, snapshotCopy.CopyState.Status); using (Stream snapshotStream = await snapshot1.OpenReadAsync()) { snapshotStream.Seek(0, SeekOrigin.End); TestHelper.AssertStreamsAreEqual(originalData, snapshotStream); } //overwriting will create another snapshot await appendBlob.CreateOrReplaceAsync(); await blob.FetchAttributesAsync(); using (Stream snapshotStream = await snapshot1.OpenReadAsync()) { snapshotStream.Seek(0, SeekOrigin.End); TestHelper.AssertStreamsAreEqual(originalData, snapshotStream); } await Task.Delay(500); List <IListBlobItem> blobs = (await container.ListBlobsSegmentedAsync(null, true, BlobListingDetails.All, null, null, null, null)) .Results .ToList(); Assert.AreEqual(4, blobs.Count); AssertAreEqual(snapshotCopy, (CloudBlob)blobs[0]); AssertAreEqual(snapshot1, (CloudBlob)blobs[1]); AssertAreEqual(snapshot2, (CloudBlob)blobs[2]); AssertAreEqual(blob, (CloudBlob)blobs[3]); } finally { await container.DeleteIfExistsAsync(); } }