Using Unified Agent for Executing Automated Tests Without Installing Visual Studio in Test Client–Azure DevOps/VSTS

As described in the post “Running UI Tests with Unified Agent” you can setup unified agent (same agent used for build/deployment in Azure DevOps/VSTS), in an application pool or in a deployment group to execute functional UI tests. The unified agent is really useful as it does not require to setup separate test agent using winRM based Deploy Test Agent task which is required if Run Functional Tests task is used for automated test execution.With unified agent you can use Visual Studio Test task, which is capable of running Selenium based UI tests as well, in addition to Coded UI tests. There was a dependency that you needed to have Visual Studio installed in the test client machine to get the Visual Studio Test task as it is packaged with Visual Studio. However, thanks to the NuGet package “Microsoft Test Platform”  you no longer need to install full Visual Studio in your test client machine to execute automated tests, with unified agent using Visual Studio Test task. Let’s look at how to use “Microsoft Test Platform”  and Visual Studio Test task in a test client using Azure DevOps Release Management.

Running UI Tests with Unified Agent

You needed to setup dedicated machines for testing when using Run Functional Tests and you had to execute, Deploy Test Agent step and Copy Files step as prerequisites. With the introduction of unified agent enabling build, deployment and testing using same agent, now it is possible to setup pool of machines as Test clients to cater multiple project needs. You can even deploy and test using the same agent if you wish to do so.  Unified agent support is available to run tests as multi-machine distributed execution. You do not require to execute copy files task as artifacts downloaded by the agent can be used for running tests. Let’s look at how to prepare a unified agent for running UI tests.