Add PHP 8 compatibility and Use github actions as test CI

[alexander-schranz]

Q	A
Branch?	"master"
Bug fix?	no
New feature?	no
BC breaks?	no
Deprecations?	no
Fixed tickets	comma-separated list of tickets fixed by the PR, if any
License	MIT
Doc PR	reference to the documentation PR, if any

Add PHP 8 compatibility and Use github actions as test CI.

See https://github.com/alexander-schranz/Testing/pull/1/checks

Requires:

• DoctrinePHPCRBundle update Add PHP 8 compatibility and Use github actions as test CI doctrine/DoctrinePHPCRBundle#355

[dbu]

thanks, looks good - i checked the build output in your fork.

just one thing about the duplicated tests step

[alexander-schranz]

Tests are green again: https://github.com/alexander-schranz/Testing/pull/1/checks. In the repository setting we would need to remove the Travis Integration Check in the branches settings when this is merged.

[dbu]

prefer lowest is not working as intended. i suggest we use the same pattern you used in other MRs

[dbu]

now something with the lowest version build fails because of phpunit version. can we lock the phpunit bridge to a new version in composer.json?

[alexander-schranz]

@dbu this did fix it. Thank you!