Test coverage

test.py

def foo():
    return 5


def main():
    x = foo()
    print(x)


if __name__ == '__main__': # pragma: no cover
    main()

## test code

# To test:
# pip install pytest
# pytest script.py

# To test with coverage:
# put this file (script.py) in a directory by itself, say foo
# then from the parent directory of foo:
# pip install pytest-cov
# pytest --cov=foo foo/script.py

# To show missing lines
# pytest --cov=foo --cov-report=term-missing foo/script.py


def test_foo():
    assert foo() == 5


def test_main(capsys):
    main()
    captured = capsys.readouterr()
    assert captured.out == "5\n"