Unidentified issue with "set_fault_relation"

[NilsChudalla]

Description

In example "ch1_5", function set_fault_relation does not work as intended as described in issue #1074. I tried this in some other models, where the behaviour is still off. This is a WIP, where I turned the model from ch1_5 into a test. For this model it works.

I am willingt to try myself, @Leguark, but I spent quite some time in it already and am a bit out of ideas.

Checklist

• My code uses type hinting for function and method arguments and return values.
• I have created tests which cover my code.
• The test code either 1. demonstrates at least one valuable use case (e.g. integration tests)
  or 2. verifies that outputs are as expected for given inputs (e.g. unit tests).
• New tests pass locally with my changes.

[Leguark]

it is failing the new test looking for the data. I will look into it

    FileNotFoundError: [Errno 2] No such file or directory: '/home/leguark/buildAgent/work/d766739d2d98fcb9/gempy/API/..\\..\\examples\\data\\input_data\\tests\\fault_relations_test_surf.csv'

venv/lib/python3.13/site-packages/pandas/io/common.py:873: FileNotFoundError