Mock jretrieve

[jonasbhend]

This PR implements mocking of the jretrieve call for testing. Because the integration test spawns a python subprocess, standard python monkeypatch mocking cannot be used. Instead the call to jretrieve is redirected to mock_jretrieve using environment variables (i.e. inserted in the front of the search path).

Summary of changes

• capture jretrieve data used for mocking
• mock_jretrieve returns captured data for testing
• mocking function defined in conftest.py and called in test_meteogram_small.py
• renamed testing functions and extended testing config to cover more use cases

[jonasbhend]

cscs-ci run

[jonasbhend]

cscs-ci run integration_test_job

[jonasbhend]

cscs-ci run

[jonasbhend]

cscs-ci run

[jonasbhend]

cscs-ci run