TTYG-200 Fix unit tests imports

[pgan002]

Fix imports in Github CI, which caused tests-with-llm/* to start failing there (although they pass locally).

The fix is to explicitly set environment variable PYTHONPATH.

This is needed due to a change in how PYTONPATH is treated, either because of a change in project configuration or the pytest version.

An alternative solution is #75 .

[nelly-hateva]

@pgan002 Can you provide a link to a build, which is failing? Unlike the other test folder tests-with-llm lacks __init__.py file and hence is not a module. Do you think you should add such?
?

[pgan002]

A failing test is linked in the Jira ticket, but I added a link in the PR description.

PR adding tests-with-llm/__init__.py: #70

[nelly-hateva]

I mislead you, adding __init__.py doesn't solve the issue (but please keep it for consistency). Indeed we need to either export PYTHONPATH (as you did) or add in pyproject.toml

[tool.pytest.ini_options]
pythonpath = ["."]

[pgan002]

... need to either export PYTHONPATH (as you did) or add in pyproject.toml

Added in #75 as an alternative to this PR. When we merge one of these PRs, we will close the other.

[nelly-hateva]

The tests pass on GitHub as well. Example https://github.com/Ontotext-AD/graphrag-eval/actions/runs/26634186922. Can we close this PR?

[pgan002]

The tests pass on GitHub as well. Example https://github.com/Ontotext-AD/graphrag-eval/actions/runs/26634186922. Can we close this PR?

What changed to make them pass?

[nelly-hateva]

The tests pass on GitHub as well. Example https://github.com/Ontotext-AD/graphrag-eval/actions/runs/26634186922. Can we close this PR?

What changed to make them pass?

IMO they were passing before, check this one https://github.com/Ontotext-AD/graphrag-eval/actions/runs/25108289498