Clear RSpec examples without shared examples in similar way as in RSpec 3.6.0

[ArturT]

This should fix Queue Mode for RSpec. This change is based on changes introduced in RSpec 3.6.0 related to the feature:

"Running specs multiple times with different runner options in the same process"
https://relishapp.com/rspec-staging/rspec-core/docs/running-specs-multiple-times-with-different-runner-options-in-the-same-process

rspec/rspec-core#2379

General context

• RSpec.clear_examples in rspec 3.6.0 clears examples without shared examples. That's good because we want to have loaded shared examples between rspec runs.

• RSpec.clear_examples in rspec < 3.6.0 clears examples and shared examples. That's bad because the tests fails because shared examples are not loaded.

RSpec.clear_examples does an additional thing which is cleared formatters and report. We don't want that because we want to accumulate info about failed/pending tests so we can show at the very end of Queue Mode output the info about summary of tests (what failed and what's pending).

Solution

Instead of using RSpec.clear_examples we do exactly the same thing as the RSpec.clear_examples method in rspec 3.6.0 except we don't clear formatters and report.