==================================== ERRORS ====================================
__________________ ERROR collecting vizing/test_functions.py ___________________
ImportError while importing test module '/home/runner/work/vizing/vizing/vizing/test_functions.py'.
Hint: make sure your test modules/packages have valid Python names.
Traceback:
/opt/hostedtoolcache/Python/3.10.13/x64/lib/python3.10/importlib/__init__.py:126: in import_module
    return _bootstrap._gcd_import(name[level:], package, level)
vizing/test_functions.py:3: in <module>
    from networkx import node_clique_number
E   ModuleNotFoundError: No module named 'networkx'
=========================== short test summary info ============================
ERROR vizing/test_functions.py
!!!!!!!!!!!!!!!!!!!! Interrupted: 1 error during collection !!!!!!!!!!!!!!!!!!!!
=============================== 1 error in 0.08s ===============================

============================= test session starts ==============================
platform linux -- Python 3.10.13, pytest-8.1.1, pluggy-1.4.0
rootdir: /home/runner/work/vizing/vizing
configfile: pyproject.toml
collected 0 items / 1 error

==================================== ERRORS ====================================
_____________________ ERROR collecting tests/test_utils.py _____________________
ImportError while importing test module '/home/runner/work/vizing/vizing/tests/test_utils.py'.
Hint: make sure your test modules/packages have valid Python names.
Traceback:
/opt/hostedtoolcache/Python/3.10.13/x64/lib/python3.10/importlib/__init__.py:126: in import_module
    return _bootstrap._gcd_import(name[level:], package, level)
tests/test_utils.py:1: in <module>
    import networkx
E   ModuleNotFoundError: No module named 'networkx'
=========================== short test summary info ============================
ERROR tests/test_utils.py
!!!!!!!!!!!!!!!!!!!! Interrupted: 1 error during collection !!!!!!!!!!!!!!!!!!!!
=============================== 1 error in 0.09s ===============================

Run # stop the build if there are Python syntax errors or undefined names
./vizing/test_functions.py:11:16: F821 undefined name 'graph_clique_number'
        return graph_clique_number(graph.subgraph(nodes)) == 1
               ^
./vizing/utils.py:40:16: F821 undefined name 'graph_clique_number'
        return graph_clique_number(complement(graph))
               ^
./vizing/utils.py:40:36: F821 undefined name 'complement'
        return graph_clique_number(complement(graph))
                                   ^
3     F821 undefined name 'graph_clique_number'
3

def test_clique_number():
    G = networkx.complete_graph(3)
    assert graph_clique_number(G) == 2