Fixed bug where BlobBaseClient.DownloadStreamingAsync() won't correct…

sdk/storage/Azure.Storage.Blobs/CHANGELOG.md

@@ -12,6 +12,7 @@
 - Added optimization to unwrap encryption key once for DownloadTo and OpenRead when Client Side Encryption is enabled.
 - Added support for RequestConditions parameter validation.  If a request condition is set for an API that doesn't support it, and ArguementException will be thrown.
     - This feature can be disabled with the environment variable "AZURE_STORAGE_DISABLE_REQUEST_CONDITIONS_VALIDATION" or the App Context switch "Azure.Storage.DisableRequestConditionsValidation".
+- Fixed bug where BlobBaseClient.DownloadStreamingAsync() won't correctly parse the LeaseStatus header.
 
 ## 12.9.1 (2021-06-23)
 - Added optimization to unwrap encryption key once for DownloadTo and OpenRead when Client Side Encryption is enabled.

sdk/storage/Azure.Storage.Blobs/src/BlobExtensions.cs

@@ -870,6 +870,7 @@ internal static BlobDownloadStreamingResult ToBlobDownloadStreamingResult(this R
                     CopySource = response.Headers.CopySource == null ? null : new Uri(response.Headers.CopySource),
                     CopyStatus = response.Headers.CopyStatus.GetValueOrDefault(),
                     LeaseDuration = response.Headers.LeaseDuration ?? LeaseDurationType.Infinite,
+                    LeaseStatus = response.Headers.LeaseStatus ?? LeaseStatus.Unlocked,
                     LeaseState = response.Headers.LeaseState.GetValueOrDefault(),
                     AcceptRanges = response.Headers.AcceptRanges,
                     BlobCommittedBlockCount = response.Headers.BlobCommittedBlockCount.GetValueOrDefault(),

sdk/storage/Azure.Storage.Blobs/tests/BlobBaseClientTests.cs

@@ -304,6 +304,10 @@ public async Task DownloadAsync_Streaming()
             var actual = new MemoryStream();
             await response.Value.Content.CopyToAsync(actual);
             TestHelper.AssertSequenceEqual(data, actual.ToArray());
+
+            Assert.AreEqual(LeaseStatus.Unlocked, response.Value.Details.LeaseStatus);
+            Assert.AreEqual(LeaseState.Available, response.Value.Details.LeaseState);
+            Assert.AreEqual(LeaseDurationType.Infinite, response.Value.Details.LeaseDuration);
         }
 
         [RecordedTest]