Test Run timeout
Issue summary
When executing a Test, the test run times out. After that, an error is shown in the test run results, but does not clarify why the time out occured.
Possible causes and resolutions
Infinite loop in Microflow
It is possible you have run into a (for or while) loop in your Mendix code. A microflow may be running endlessly, because data that was supposed to end the loop did not have the expected values.
Resolution
Use the Mendix debugger to check if the loop does not endlessly run.