Event: beforeTesting that triggers before testing begins.

[fuel-wlightning]

It would be nice to have a testing event that was triggered during test command before testing is initiated.

In the case of non-parallel tests, this would trigger just prior to starting phpunit (similar to Bootstrap if set)
In the case of parallel tests, this would trigger once before starting all phpunit tests (different than Bootstrap if set)

Some example use cases are:

• Be able to setup an external mock (or real service) used for integration testing.
• Setup shared resources used across multiple unit tests (external databases)