public static void MyClassInitialize(TestContext testContext)
{
CloudTableClient tableClient = GenerateCloudTableClient();
currentTable = tableClient.GetTableReference(GenerateRandomTableName());
currentTable.CreateIfNotExists();
// Populate Entities (This will add 1500 entities to a new table, enough to test continuations
TableServiceContext ctx = tableClient.GetTableServiceContext();
for (int l = 0; l < totalTestEntities / 100; l++)
{
for (int m = 0; m < 100; m++)
{
BaseEntity ent = new BaseEntity("partition" + l, m.ToString());
ent.Randomize();
ent.A = ent.RowKey;
ctx.AddObject(currentTable.Name, ent);
}
ctx.SaveChangesWithRetries(SaveChangesOptions.Batch);
}
}
private void DoSingleEntityReplaceFail(TablePayloadFormat format)
{
CloudTableClient tableClient = GenerateCloudTableClient();
TableServiceContext ctx = tableClient.GetTableServiceContext();
TableServiceContext secondContext = tableClient.GetTableServiceContext();
SetPayloadFormatOnDataServiceContext(ctx, format, tableClient);
SetPayloadFormatOnDataServiceContext(secondContext, format, tableClient);
// Insert Entity
BaseEntity baseEntity = new BaseEntity("insert test", "foo" + format.ToString());
baseEntity.Randomize();
ctx.AddObject(currentTable.Name, baseEntity);
ctx.SaveChangesWithRetries();
string etag = ctx.Entities.First().ETag;
baseEntity.A = "updated";
ctx.UpdateObject(baseEntity);
ctx.SaveChangesWithRetries();
MergeEntity replaceEntity = new MergeEntity(baseEntity.PartitionKey, baseEntity.RowKey);
replaceEntity.Randomize();
secondContext.AttachTo(currentTable.Name, replaceEntity, etag);
secondContext.UpdateObject(replaceEntity);
OperationContext opContext = new OperationContext();
try
{
secondContext.SaveChangesWithRetries(SaveChangesOptions.ReplaceOnUpdate, null, opContext);
Assert.Fail();
}
catch (StorageException)
{
TestHelper.ValidateResponse(opContext,
1,
(int)HttpStatusCode.PreconditionFailed,
new string[] { "UpdateConditionNotSatisfied", "ConditionNotMet" },
new string[] { "The update condition specified in the request was not satisfied.", "The condition specified using HTTP conditional header(s) is not met." });
}
ctx.DeleteObject(baseEntity);
ctx.SaveChangesWithRetries();
opContext = new OperationContext();
// try merging with deleted entity
try
{
secondContext.SaveChangesWithRetries(SaveChangesOptions.None, null, opContext);
Assert.Fail();
}
catch (StorageException)
{
TestHelper.ValidateResponse(opContext, 1, (int)HttpStatusCode.NotFound, new string[] { "ResourceNotFound" }, "The specified resource does not exist.");
}
}
private void DoSingleEntityReplace(TablePayloadFormat format)
{
CloudTableClient tableClient = GenerateCloudTableClient();
TableServiceContext ctx = tableClient.GetTableServiceContext();
TableServiceContext queryContext = tableClient.GetTableServiceContext();
SetPayloadFormatOnDataServiceContext(ctx, format, tableClient);
SetPayloadFormatOnDataServiceContext(queryContext, format, tableClient);
// Insert Entity
BaseEntity baseEntity = new BaseEntity("insert test", "foo" + format.ToString());
baseEntity.Randomize();
ctx.AddObject(currentTable.Name, baseEntity);
ctx.SaveChangesWithRetries();
string etag = ctx.Entities.First().ETag;
ctx.Detach(baseEntity);
MergeEntity replaceEntity = new MergeEntity(baseEntity.PartitionKey, baseEntity.RowKey);
replaceEntity.Randomize();
ctx.AttachTo(currentTable.Name, replaceEntity, etag);
ctx.UpdateObject(replaceEntity);
ctx.SaveChangesWithRetries(SaveChangesOptions.ReplaceOnUpdate);
// Retrieve Entity
UnionEnitity retrievedEntity = (from ent in queryContext.CreateQuery<UnionEnitity>(currentTable.Name)
where ent.PartitionKey == baseEntity.PartitionKey
&& ent.RowKey == baseEntity.RowKey
select ent).AsTableServiceQuery(queryContext).Execute().FirstOrDefault();
Assert.IsNotNull(retrievedEntity);
Assert.AreEqual(null, retrievedEntity.A);
Assert.AreEqual(null, retrievedEntity.B);
Assert.AreEqual(null, retrievedEntity.C);
Assert.AreEqual(replaceEntity.D, retrievedEntity.D);
Assert.AreEqual(replaceEntity.E, retrievedEntity.E);
Assert.AreEqual(replaceEntity.F, retrievedEntity.F);
}
public void SingleEntityInsertOrReplaceTask()
{
CloudTableClient tableClient = GenerateCloudTableClient();
TableServiceContext ctx = tableClient.GetTableServiceContext();
TableServiceContext queryContext = tableClient.GetTableServiceContext();
queryContext.MergeOption = MergeOption.NoTracking;
// Insert Entity
BaseEntity baseEntity = new BaseEntity("insert test", "foo");
// Insert Or Merge with no pre-existing entity
MergeEntity insertOrReplaceEntity = new MergeEntity(baseEntity.PartitionKey, baseEntity.RowKey);
insertOrReplaceEntity.Randomize();
ctx.AttachTo(currentTable.Name, insertOrReplaceEntity, null);
ctx.UpdateObject(insertOrReplaceEntity);
ctx.SaveChangesWithRetriesAsync(SaveChangesOptions.ReplaceOnUpdate).Wait();
ctx.Detach(insertOrReplaceEntity);
// Retrieve Entity & Verify Contents
UnionEnitity retrievedEntity = (from ent in queryContext.CreateQuery<UnionEnitity>(currentTable.Name)
where ent.PartitionKey == baseEntity.PartitionKey
&& ent.RowKey == baseEntity.RowKey
select ent).AsTableServiceQuery(queryContext).Execute().FirstOrDefault();
Assert.IsNotNull(retrievedEntity);
Assert.AreEqual(null, retrievedEntity.A);
Assert.AreEqual(null, retrievedEntity.B);
Assert.AreEqual(null, retrievedEntity.C);
Assert.AreEqual(insertOrReplaceEntity.D, retrievedEntity.D);
Assert.AreEqual(insertOrReplaceEntity.E, retrievedEntity.E);
Assert.AreEqual(insertOrReplaceEntity.F, retrievedEntity.F);
BaseEntity replacedEntity = new BaseEntity("insert test", "foo");
replacedEntity.Randomize();
ctx.AttachTo(currentTable.Name, replacedEntity, null);
ctx.UpdateObject(replacedEntity);
ctx.SaveChangesWithRetriesAsync(SaveChangesOptions.ReplaceOnUpdate).Wait();
// Retrieve Entity & Verify
retrievedEntity = (from ent in queryContext.CreateQuery<UnionEnitity>(currentTable.Name)
where ent.PartitionKey == baseEntity.PartitionKey
&& ent.RowKey == baseEntity.RowKey
select ent).AsTableServiceQuery(queryContext).Execute().FirstOrDefault();
Assert.IsNotNull(retrievedEntity);
Assert.AreEqual(replacedEntity.A, retrievedEntity.A);
Assert.AreEqual(replacedEntity.B, retrievedEntity.B);
Assert.AreEqual(replacedEntity.C, retrievedEntity.C);
Assert.AreEqual(null, retrievedEntity.D);
Assert.AreEqual(null, retrievedEntity.E);
Assert.AreEqual(null, retrievedEntity.F);
}
public void TableServiceContextSaveChangeWithRetriesAPM()
{
CloudTableClient tableClient = GenerateCloudTableClient();
// Get data context.
TableServiceContext context = tableClient.GetTableServiceContext();
// Create the new entity.
BaseEntity entity = new BaseEntity("Hello", "world.");
using (AutoResetEvent waitHandle = new AutoResetEvent(false))
{
// Add the entity.
context.AttachTo(this.currentTable.Name, entity);
context.UpdateObject(entity);
// Save changes to the service.
IAsyncResult result = context.BeginSaveChangesWithRetries(ar => waitHandle.Set(), null);
waitHandle.WaitOne();
context.EndSaveChangesWithRetries(result);
BaseEntity entity2 = new BaseEntity("Insert", "foo.");
context.AttachTo(this.currentTable.Name, entity2);
context.UpdateObject(entity2);
// Test again with different parameters
result = context.BeginSaveChangesWithRetries(SaveChangesOptions.None, ar => waitHandle.Set(), null);
waitHandle.WaitOne();
context.EndSaveChangesWithRetries(result);
// Retrieve Entities & Verify
BaseEntity retrievedEntity = (from ent in context.CreateQuery<BaseEntity>(currentTable.Name)
where
ent.PartitionKey == entity2.PartitionKey
&& ent.RowKey == entity2.RowKey
select ent).AsTableServiceQuery(context).Execute().FirstOrDefault();
Assert.IsNotNull(retrievedEntity);
retrievedEntity = (from ent in context.CreateQuery<BaseEntity>(currentTable.Name)
where
ent.PartitionKey == entity.PartitionKey
&& ent.RowKey == entity.RowKey
select ent).AsTableServiceQuery(context).Execute().FirstOrDefault();
Assert.IsNotNull(retrievedEntity);
}
// Test Dispose
context.Dispose();
}
private void DoSingleEntityInsertOrMerge(TablePayloadFormat format)
{
CloudTableClient tableClient = GenerateCloudTableClient();
TableServiceContext ctx = tableClient.GetTableServiceContext();
TableServiceContext queryContext = tableClient.GetTableServiceContext();
SetPayloadFormatOnDataServiceContext(ctx, format, tableClient);
SetPayloadFormatOnDataServiceContext(queryContext, format, tableClient);
// Insert Entity
BaseEntity baseEntity = new BaseEntity("insert test", "foo" + format.ToString());
// Insert Or Merge with no pre-existing entity
MergeEntity insertOrMergeEntity = new MergeEntity(baseEntity.PartitionKey, baseEntity.RowKey);
insertOrMergeEntity.Randomize();
ctx.AttachTo(currentTable.Name, insertOrMergeEntity, null);
ctx.UpdateObject(insertOrMergeEntity);
ctx.SaveChangesWithRetries();
ctx.Detach(insertOrMergeEntity);
// Retrieve Entity & Verify Contents
UnionEnitity retrievedEntity = (from ent in queryContext.CreateQuery<UnionEnitity>(currentTable.Name)
where ent.PartitionKey == baseEntity.PartitionKey
&& ent.RowKey == baseEntity.RowKey
select ent).AsTableServiceQuery(ctx).Execute().FirstOrDefault();
Assert.IsNotNull(retrievedEntity);
Assert.AreEqual(insertOrMergeEntity.D, retrievedEntity.D);
Assert.AreEqual(insertOrMergeEntity.E, retrievedEntity.E);
Assert.AreEqual(insertOrMergeEntity.F, retrievedEntity.F);
UnionEnitity mergedEntity = new UnionEnitity("insert test", "foo" + format.ToString());
mergedEntity.Randomize();
mergedEntity.D = insertOrMergeEntity.D;
mergedEntity.E = insertOrMergeEntity.E;
mergedEntity.F = insertOrMergeEntity.F;
ctx.AttachTo(currentTable.Name, mergedEntity, null);
ctx.UpdateObject(mergedEntity);
ctx.SaveChangesWithRetries();
ctx.Detach(mergedEntity);
// Retrieve Entity & Verify
retrievedEntity = (from ent in queryContext.CreateQuery<UnionEnitity>(currentTable.Name)
where ent.PartitionKey == baseEntity.PartitionKey
&& ent.RowKey == baseEntity.RowKey
select ent).AsTableServiceQuery(queryContext).Execute().FirstOrDefault();
Assert.IsNotNull(retrievedEntity);
Assert.AreEqual(mergedEntity.A, retrievedEntity.A);
Assert.AreEqual(mergedEntity.B, retrievedEntity.B);
Assert.AreEqual(mergedEntity.C, retrievedEntity.C);
Assert.AreEqual(mergedEntity.D, retrievedEntity.D);
Assert.AreEqual(mergedEntity.E, retrievedEntity.E);
Assert.AreEqual(mergedEntity.F, retrievedEntity.F);
}
public void TableServiceContextTimeoutDuringSaveChangesNonBatchAPM()
{
CloudTableClient tableClient = GenerateCloudTableClient();
TableServiceContext ctx = tableClient.GetTableServiceContext();
for (int m = 0; m < 100; m++)
{
BaseEntity ent = new BaseEntity("testpartition", m.ToString());
ent.Randomize();
ent.A = ent.RowKey;
ctx.AddObject(currentTable.Name, ent);
}
OperationContext opContext = new OperationContext();
TableRequestOptions requestOptions = new TableRequestOptions() { MaximumExecutionTime = TimeSpan.FromSeconds(5) };
using (HttpMangler proxy = new HttpMangler(false,
new[] { DelayBehaviors.DelayAllRequestsIf(2000, XStoreSelectors.TableTraffic().IfHostNameContains(tableClient.Credentials.AccountName).SkipNSessions(10)) }))
{
try
{
using (ManualResetEvent evt = new ManualResetEvent(false))
{
IAsyncResult result = ctx.BeginSaveChangesWithRetries(SaveChangesOptions.None, requestOptions, opContext,
(res) =>
{
result = res;
evt.Set();
}, null);
evt.WaitOne();
ctx.EndSaveChangesWithRetries(result);
}
ctx.SaveChangesWithRetries(SaveChangesOptions.None, requestOptions, opContext);
}
catch (StorageException ex)
{
Assert.AreEqual(ex.RequestInformation.HttpStatusCode, (int)HttpStatusCode.RequestTimeout);
Assert.AreEqual("The client could not finish the operation within specified timeout.", ex.Message);
Assert.IsTrue(ex.InnerException is TimeoutException);
}
}
}
public void TableServiceContextConcurrencyAllowsOnlySingleOperationAtOnce()
{
CloudTableClient tableClient = GenerateCloudTableClient();
TableServiceContext tableContext = tableClient.GetTableServiceContext();
// insert entities to query against
for (int i = 0; i < 5; i++)
{
for (int m = 0; m < 100; m++)
{
BaseEntity ent = new BaseEntity("testpartition" + i, m.ToString());
ent.Randomize();
ent.A = ent.RowKey;
tableContext.AddObject(currentTable.Name, ent);
}
tableContext.SaveChangesWithRetries(SaveChangesOptions.Batch);
}
List<OperationContext> opContexts = new List<OperationContext>();
object lockerObj = new object();
DateTime start = DateTime.Now;
int threadsRunning = 0;
Exception lastEx = null;
// Start 10 simultaneous threads to query entities associated with same context.
for (int j = 0; j < 10; j++)
{
opContexts.Add(new OperationContext());
Thread newThread = new Thread((arg) =>
{
Interlocked.Increment(ref threadsRunning);
try
{
lock (lockerObj)
{
Monitor.Wait(lockerObj);
}
TableServiceQuery<BaseEntity> query = (from ent in tableContext.CreateQuery<BaseEntity>(currentTable.Name)
select ent).AsTableServiceQuery(tableContext);
Debug.WriteLine(String.Format("Thread {0} start operation @ {1}", Thread.CurrentThread.ManagedThreadId, (DateTime.Now - start).TotalMilliseconds));
try
{
query.Execute(null, arg as OperationContext).ToList();
}
catch (Exception)
{
// no op, expected to have some exceptions
}
Debug.WriteLine(String.Format("Thread {0} end operation @ {1}", Thread.CurrentThread.ManagedThreadId, (DateTime.Now - start).TotalMilliseconds));
}
catch (Exception ex)
{
lastEx = ex;
}
finally
{
Interlocked.Decrement(ref threadsRunning);
}
});
newThread.Start(opContexts[j]);
}
// Wait for all threads to start
while (Interlocked.CompareExchange(ref threadsRunning, 10, 10) < 10)
{
Thread.Sleep(200);
}
// pulse all threads
lock (lockerObj)
{
Monitor.PulseAll(lockerObj);
}
// Wait for all threads to complete
while (Interlocked.CompareExchange(ref threadsRunning, -1, 0) > -1)
{
Thread.Sleep(200);
}
if (lastEx != null)
{
throw lastEx;
}
foreach (OperationContext opContext in opContexts)
{
if (opContext.LastResult == null || opContext.LastResult.StartTime == null || opContext.LastResult.EndTime == null)
continue;
TestHelper.AssertNAttempts(opContext, 1);
RequestResult currRes = opContext.LastResult;
// Make sure this results start time does not occur in between any other results start & end time
var overlappingResults = (from ctx in opContexts
where ctx.LastResult != null && ctx.LastResult != currRes &&
ctx.LastResult.StartTime != null && ctx.LastResult.EndTime != null &&
ctx.LastResult.StartTime.Ticks < currRes.StartTime.Ticks &&
ctx.LastResult.EndTime.Ticks > currRes.StartTime.Ticks
select ctx.LastResult);
Assert.AreEqual(overlappingResults.Count(), 0, "Detected overlapping query");
}
}
public void TableServiceContextOperationContextEventsAPM()
{
CloudTableClient tableClient = GenerateCloudTableClient();
TableServiceContext ctx = tableClient.GetTableServiceContext();
for (int m = 0; m < 10; m++)
{
BaseEntity ent = new BaseEntity("testpartition", m.ToString());
ent.Randomize();
ent.A = ent.RowKey;
ctx.AddObject(currentTable.Name, ent);
}
List<string> sends = new List<string>();
List<string> receives = new List<string>();
OperationContext opContext = new OperationContext();
opContext.SendingRequest += (sender, args) => sends.Add(args.RequestInformation.StartTime.Ticks.ToString());
opContext.ResponseReceived += (sender, args) => receives.Add(args.RequestInformation.ServiceRequestID);
using (ManualResetEvent evt = new ManualResetEvent(false))
{
ctx.BeginSaveChangesWithRetries(SaveChangesOptions.None, null, opContext,
(res) =>
{
ctx.EndSaveChangesWithRetries(res);
evt.Set();
}, null);
evt.WaitOne();
}
TestHelper.AssertNAttempts(opContext, 10);
Assert.AreEqual(sends.Count(), 10);
Assert.AreEqual(receives.Count(), 10);
}
public void TableServiceContextRequestResultsAPM()
{
CloudTableClient tableClient = GenerateCloudTableClient();
TableServiceContext ctx = tableClient.GetTableServiceContext();
for (int m = 0; m < 10; m++)
{
BaseEntity ent = new BaseEntity("testpartition", m.ToString());
ent.Randomize();
ent.A = ent.RowKey;
ctx.AddObject(currentTable.Name, ent);
}
OperationContext opContext = new OperationContext();
using (ManualResetEvent evt = new ManualResetEvent(false))
{
ctx.BeginSaveChangesWithRetries(SaveChangesOptions.None, null, opContext,
(res) =>
{
ctx.EndSaveChangesWithRetries(res);
evt.Set();
}, null);
evt.WaitOne();
}
TestHelper.AssertNAttempts(opContext, 10);
}
public void TableServiceContextRequestResultsSync()
{
CloudTableClient tableClient = GenerateCloudTableClient();
TableServiceContext ctx = tableClient.GetTableServiceContext();
for (int m = 0; m < 10; m++)
{
BaseEntity ent = new BaseEntity("testpartition", m.ToString());
ent.Randomize();
ent.A = ent.RowKey;
ctx.AddObject(currentTable.Name, ent);
}
OperationContext opContext = new OperationContext();
ctx.SaveChangesWithRetries(SaveChangesOptions.None, null, opContext);
TestHelper.AssertNAttempts(opContext, 10);
}
/// <summary>
/// Test a table operation on entities inside and outside the given range.
/// </summary>
/// <param name="tableName">The name of the table to test.</param>
/// <param name="startPk">The start partition key range.</param>
/// <param name="startRk">The start row key range.</param>
/// <param name="endPk">The end partition key range.</param>
/// <param name="endRk">The end row key range.</param>
/// <param name="runOperationDelegate">A delegate with the table operation to test.</param>
/// <param name="opName">The name of the operation being tested.</param>
/// <param name="expectSuccess">Whether the operation should succeed on entities within the range.</param>
private void TestOperationWithRange(
string tableName,
string startPk,
string startRk,
string endPk,
string endRk,
Action<BaseEntity> runOperationDelegate,
string opName,
bool expectSuccess,
HttpStatusCode expectedStatusCode,
bool isRangeQuery)
{
CloudTableClient referenceClient = GenerateCloudTableClient();
TableServiceContext referenceContext = referenceClient.GetTableServiceContext();
string partitionKey = startPk ?? endPk ?? "M";
string rowKey = startRk ?? endRk ?? "S";
// if we expect a success for creation - avoid inserting duplicate entities
BaseEntity tableEntity = new BaseEntity(partitionKey, rowKey);
if (expectedStatusCode == HttpStatusCode.Created)
{
referenceContext.AttachTo(tableName, tableEntity, "*");
referenceContext.DeleteObject(tableEntity);
try
{
referenceContext.SaveChangesWithRetries();
}
catch (Exception)
{
}
}
else
{
// only for add we should not be adding the entity
referenceContext.AttachTo(tableName, tableEntity);
referenceContext.UpdateObject(tableEntity);
referenceContext.SaveChangesWithRetries(SaveChangesOptions.ReplaceOnUpdate);
}
if (expectSuccess)
{
runOperationDelegate(tableEntity);
}
else
{
TestHelper.ExpectedException(
() => runOperationDelegate(tableEntity),
string.Format("{0} without appropriate permission.", opName),
HttpStatusCode.NotFound);
}
if (startPk != null)
{
tableEntity.PartitionKey = "A";
if (startPk.CompareTo(tableEntity.PartitionKey) <= 0)
{
Assert.Inconclusive("Test error: partition key for this test must not be less than or equal to \"A\"");
}
TestHelper.ExpectedException(
() => runOperationDelegate(tableEntity),
string.Format("{0} before allowed partition key range", opName),
HttpStatusCode.NotFound);
tableEntity.PartitionKey = partitionKey;
}
if (endPk != null)
{
tableEntity.PartitionKey = "Z";
if (endPk.CompareTo(tableEntity.PartitionKey) >= 0)
{
Assert.Inconclusive("Test error: partition key for this test must not be greater than or equal to \"Z\"");
}
TestHelper.ExpectedException(
() => runOperationDelegate(tableEntity),
string.Format("{0} after allowed partition key range", opName),
HttpStatusCode.NotFound);
tableEntity.PartitionKey = partitionKey;
}
if (startRk != null)
{
if (isRangeQuery || startPk != null)
{
tableEntity.PartitionKey = startPk;
tableEntity.RowKey = "A";
if (startRk.CompareTo(tableEntity.RowKey) <= 0)
{
Assert.Inconclusive("Test error: row key for this test must not be less than or equal to \"A\"");
}
TestHelper.ExpectedException(
() => runOperationDelegate(tableEntity),
string.Format("{0} before allowed row key range", opName),
HttpStatusCode.NotFound);
tableEntity.RowKey = rowKey;
}
}
if (endRk != null)
{
if (isRangeQuery || endPk != null)
{
tableEntity.PartitionKey = endPk;
tableEntity.RowKey = "Z";
if (endRk.CompareTo(tableEntity.RowKey) >= 0)
{
Assert.Inconclusive("Test error: row key for this test must not be greater than or equal to \"Z\"");
}
TestHelper.ExpectedException(
() => runOperationDelegate(tableEntity),
string.Format("{0} after allowed row key range", opName),
HttpStatusCode.NotFound);
tableEntity.RowKey = rowKey;
}
}
}
public void TableServiceContextOperationContextStartEndTimeAPM()
{
CloudTableClient tableClient = GenerateCloudTableClient();
TableServiceContext ctx = tableClient.GetTableServiceContext();
DateTime start = DateTime.Now;
for (int m = 0; m < 10; m++)
{
BaseEntity ent = new BaseEntity("testpartition", m.ToString());
ent.Randomize();
ent.A = ent.RowKey;
ctx.AddObject(currentTable.Name, ent);
}
OperationContext opContext = new OperationContext();
using (ManualResetEvent evt = new ManualResetEvent(false))
{
ctx.BeginSaveChangesWithRetries(SaveChangesOptions.None, null, opContext,
(res) =>
{
ctx.EndSaveChangesWithRetries(res);
evt.Set();
}, null);
evt.WaitOne();
}
Assert.IsNotNull(opContext.StartTime, "StartTime not set");
Assert.IsTrue(opContext.StartTime >= start, "StartTime not set correctly");
Assert.IsNotNull(opContext.EndTime, "EndTime not set");
Assert.IsTrue(opContext.EndTime <= DateTime.Now, "EndTime not set correctly");
}
public void SingleEntityMerge()
{
CloudTableClient tableClient = GenerateCloudTableClient();
TableServiceContext ctx = tableClient.GetTableServiceContext();
TableServiceContext queryContext = tableClient.GetTableServiceContext();
// Insert Entity
BaseEntity baseEntity = new BaseEntity("insert test", "foo");
baseEntity.Randomize();
ctx.AddObject(currentTable.Name, baseEntity);
ctx.SaveChangesWithRetries();
string etag = ctx.Entities.First().ETag;
ctx.Detach(baseEntity);
MergeEntity mergeEntity = new MergeEntity(baseEntity.PartitionKey, baseEntity.RowKey);
mergeEntity.Randomize();
ctx.AttachTo(currentTable.Name, mergeEntity, etag);
ctx.UpdateObject(mergeEntity);
ctx.SaveChangesWithRetries();
// Retrieve Entity
UnionEnitity retrievedEntity = (from ent in queryContext.CreateQuery<UnionEnitity>(currentTable.Name)
where ent.PartitionKey == baseEntity.PartitionKey
&& ent.RowKey == baseEntity.RowKey
select ent).AsTableServiceQuery(queryContext).Execute().FirstOrDefault();
Assert.IsNotNull(retrievedEntity);
Assert.AreEqual(baseEntity.A, retrievedEntity.A);
Assert.AreEqual(baseEntity.B, retrievedEntity.B);
Assert.AreEqual(baseEntity.C, retrievedEntity.C);
Assert.AreEqual(mergeEntity.D, retrievedEntity.D);
Assert.AreEqual(mergeEntity.E, retrievedEntity.E);
Assert.AreEqual(mergeEntity.F, retrievedEntity.F);
}