Pen y Fan 843671d108
[doc] Add additional information required to run the test
- I believe the YAML file should be included for the completeness of this example.
- Added details on Caching, I know this is duplication, but I believe it reinforces this requirement by example.
- The example **phpunit.xml** file is a basic working example.

I propose this as a more complete how-to, my thinking is someone new reading this how-to documentation, can follow the instructions and successfully run the example test. I hope this is acceptable.
2021-05-31 21:07:11 +01:00
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