Add support to run different subsets of (integration) tests

[ckunki]

Currently, the PTB offers two nox sessions for running either the unit or the integration tests_

• nox -s test:unit
• nox -s test:integration

Implementation

• Nox task test:integration runs _integration_tests()
• which calls _test_command(config.root / "test" / "integration", config, context)
• which returns coverage … pytest … context["fwd-args"]

Details: Background & Context, References, Examples

• See the link in private field IntRef for more details regarding the sample project AAF
• Besides the AAF also ITDE and NC have similar needs

Proposals

• Use pytest markers @pytest.mark.xyz to separate test cases
• Add nox session test:dir expecting a directory as parameter

Task(s)

TBD