Reason

I common mistake is to use a nonlinear variable name in the 'vars', 'vals' inputs. If a non-linear variable is supplied MOOSE should provide a message explaining that it can't be done.

Design

Check the 'vals' parameter against the known nonlinear va

we should add .ipynb to the gitignore - notebooks are out-of-scope for this repo. In the past we have had some notebooks be committed which adds a large volume of code to the log that is later removed

We currently don't test for cases without mesh connectivity. And, we don't test for parallel (distributed) meshes.
Current tests: https://github.com/precice/precice/blob/develop/src/precice/tests/WatchPointTest.cpp

In most cases, we don't have a .gitignore file, assuming that a developer would clean the result files (e.g. using Allclean) before commiting.

In other cases (e.g. tutorials/FSI/flap_perp/OpenFOAM-FEniCS/), we provide a .gitignore. In this specific case, the .gitignore is ignoring the complete