public void CloudPageBlobCopyFromSnapshotTest() { CloudBlobContainer container = GetRandomContainerReference(); try { container.Create(); CloudPageBlob source = container.GetPageBlobReference("source"); string data = new string('a', 512); UploadText(source, data, Encoding.UTF8); source.Metadata["Test"] = "value"; source.SetMetadata(); CloudPageBlob snapshot = source.CreateSnapshot(); //Modify source string newData = new string('b', 512); source.Metadata["Test"] = "newvalue"; source.SetMetadata(); source.Properties.ContentMD5 = null; UploadText(source, newData, Encoding.UTF8); Assert.AreEqual(newData, DownloadText(source, Encoding.UTF8), "Source is modified correctly"); Assert.AreEqual(data, DownloadText(snapshot, Encoding.UTF8), "Modifying source blob should not modify snapshot"); source.FetchAttributes(); snapshot.FetchAttributes(); Assert.AreNotEqual(source.Metadata["Test"], snapshot.Metadata["Test"], "Source and snapshot metadata should be independent"); CloudPageBlob copy = container.GetPageBlobReference("copy"); copy.StartCopyFromBlob(TestHelper.Defiddler(snapshot)); WaitForCopy(copy); Assert.AreEqual(CopyStatus.Success, copy.CopyState.Status); Assert.AreEqual(data, DownloadText(copy, Encoding.UTF8), "Data inside copy of blob not similar"); copy.FetchAttributes(); BlobProperties prop1 = copy.Properties; BlobProperties prop2 = snapshot.Properties; Assert.AreEqual(prop1.CacheControl, prop2.CacheControl); Assert.AreEqual(prop1.ContentEncoding, prop2.ContentEncoding); Assert.AreEqual(prop1.ContentDisposition, prop2.ContentDisposition); Assert.AreEqual(prop1.ContentLanguage, prop2.ContentLanguage); Assert.AreEqual(prop1.ContentMD5, prop2.ContentMD5); Assert.AreEqual(prop1.ContentType, prop2.ContentType); Assert.AreEqual("value", copy.Metadata["Test"], false, "Copied metadata not same"); copy.Delete(); } finally { container.DeleteIfExists(); } }