Enable linting of our test code, but not our test data files

.github/workflows/ci.yml

@@ -47,7 +47,7 @@ jobs:
 
       - name: Run tests
         run: |
-          python -m flake8 jedi setup.py
+          python -m flake8 jedi test setup.py
           python -m mypy jedi sith.py setup.py
 
   coverage:

setup.cfg

@@ -21,7 +21,13 @@ per-file-ignores =
   jedi/__init__.py:F401
   jedi/inference/compiled/__init__.py:F401
   jedi/inference/value/__init__.py:F401
-exclude = jedi/third_party/* .tox/*
+exclude =
+  .tox/*
+  jedi/third_party/*
+  test/completion/*
+  test/examples/*
+  test/refactor/*
+  test/static_analysis/*
 
 [pycodestyle]
 max-line-length = 100