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();
}
}