Null-tests

[Sebastian-Belkner]

When we work with real data, tests based on the input lensing potential will not be available.

Null-testing will take the input data and validate various parts of an analysis.

These tests could be done on

• beam functions
• noise maps
• foreground estimates
• individual frequency maps
• noCMB maps
• ...

While a null-testing suite is needed for delensalot and needs integration, it must not necessarily be using configuration files, as a configuration file is developed for the purpose of automatizing re-analysis pipelines of e.g. CMB-S4 and PICO.
Furthermore, a configuration file is somewhat unflexible when deviating too much from its intended purpose.

I am thinking of a new module in tests/ which a delensalot-null-test-model (ntm)) would use instead of core/handler. The way this would work is by adding a new entry point, e.g. nulltest() instead of run()

in the near future, @louisl3grand is going to work with real data and I am hoping that we can discuss this further in the scope of his project.