We have recently encountered a bug that we are able to reproduce manually in Internet Explorer, without any significant effort.
Same bug we have tried to reproduce also automatically, with WebDriver on Internet Explorer 8. However, even after looping the test and repeating it 100 times does not reproduce the bug, the test goes green.
I wonder what caused such a difference?
- timing of GUI events in automated tests is different than in our manual tests (to fast, to slow, etc.)
- WebDriver is operating on a different level of a browser API and than a user, making WebDriver less credible in simulating user behavior.