public async Task CloudBlockBlobCopyFromSnapshotTestAsync()
{
CloudBlobContainer container = GetRandomContainerReference();
try
{
await container.CreateAsync();
CloudBlockBlob source = container.GetBlockBlobReference("source");
string data = "String data";
await UploadTextAsync(source, data, Encoding.UTF8);
source.Metadata["Test"] = "value";
await source.SetMetadataAsync();
CloudBlockBlob snapshot = await source.CreateSnapshotAsync();
//Modify source
string newData = "Hello";
source.Metadata["Test"] = "newvalue";
await source.SetMetadataAsync();
source.Properties.ContentMD5 = null;
await UploadTextAsync(source, newData, Encoding.UTF8);
Assert.AreEqual(newData, await DownloadTextAsync(source, Encoding.UTF8), "Source is modified correctly");
Assert.AreEqual(data, await DownloadTextAsync(snapshot, Encoding.UTF8), "Modifying source blob should not modify snapshot");
await source.FetchAttributesAsync();
await snapshot.FetchAttributesAsync();
Assert.AreNotEqual(source.Metadata["Test"], snapshot.Metadata["Test"], "Source and snapshot metadata should be independent");
CloudBlockBlob copy = container.GetBlockBlobReference("copy");
await copy.StartCopyAsync(TestHelper.Defiddler(snapshot));
await WaitForCopyAsync(copy);
Assert.AreEqual(CopyStatus.Success, copy.CopyState.Status);
Assert.AreEqual(data, await DownloadTextAsync(copy, Encoding.UTF8), "Data inside copy of blob not similar");
await copy.FetchAttributesAsync();
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");
await copy.DeleteAsync();
}
finally
{
await container.DeleteAsync();
}
}