Note: Despite my use of the term “in parallel” below, THIS IS NOT ABOUT COLLECTIONS.
I have three test suites,
I can run all three of them sequentially without any issue.
I can run any two of them by hand, in parallel, (click Run, click Run) without issue.
In any order, I cannot run three by hand, in parallel. The third will always fail every Test Case with the same error:
Test Cases/Pages/Sample/Test blah blah FAILED.
Caused by: …BrowserNotOpenedException: Browser is not opened
I tried to create a Suite Collection set to execute in parallel, but same issue, the last suite in the list fails with the same errors.