Validating result from previous build step in TFS build 2015

Question

Using TFS build 2015, I'm looking for a way to validate the outcome of the previous build steps.

The scenario I'm looking for is that, from a powershell script triggered as a build step, be able to loop through the previous build steps and being able to validate if any of them failed.

I want the previous steps to be unaware of the validation. I dont want the previous steps to have to set the status of their outcome.

Thanks!

Answer 1

I don't think it will be possible to validate previous build steps without having them return a state to TFS. But you can set variables from a PowerShell script by writing ##vso[task.setvariable]value to the output as described here which you can later check in a following PowerShell script.