C# OpenSDK NUnit Parallel Tests

TestProject Addons, SDK and Coded Tests
#1

Hi, I’m trying to get parallel testing working with NUnit in C# with the OpenSDK.

However, every time I try to create more than one driver instance and execute commands at the same time, all but one test will fail with the following error.

  Message: 
    System.InvalidOperationException : The collection has been marked as complete with regards to additions.

  Stack Trace: 
    BlockingCollection`1.TryAddWithNoTimeValidation(T item, Int32 millisecondsTimeout, CancellationToken cancellationToken)
    BlockingCollection`1.Add(T item)
    ReportsQueue.Submit(RestRequest request, Report report) line 94
    AgentClient.ReportDriverCommand(DriverCommandReport driverCommandReport) line 314
    ReportingCommandExecutor.SendCommandToAgent(Command command, Object result, Boolean passed) line 250
    ReportingCommandExecutor.ReportCommand(Command command, Response response) line 135
    CustomHttpCommandExecutor.Execute(Command commandToExecute, Boolean skipReporting) line 137
    CustomHttpCommandExecutor.Execute(Command commandToExecute) line 86
    BaseDriver.Execute(String driverCommandToExecute, Dictionary`2 parameters) line 227

I’m not sure if I’m doing something wrong or if the OpenSDK doesn’t actually support parallel test running. I can’t find a single thing one way or the other except that both the agent and Selenium support it.

Any help or info would be appreciated. Thanks!

#2

Hello @tporadun
Currently parallel testing is not supported when using OpenSDK for testing.

#3

Any idea on when or if support will be added? This is kind of an important feature that appears to be supported in Selenium that I also figured would be supported in TestProject.

If there is no planned support for this, what is a good alternative?

#4

Yes this is on our road map for 2022, I have added your request to our ticket TP-15449
We will update you here once it’s resolved.