def test_main__should_not_patch_poetry__when_pip_is_not_found(
mocker, poetry_mock):
# mock sys.modules to make `import pip` raise an exception
mocker.patch.dict(sys.modules, {'pip': None})
# call main
pooetry.main()
# assert poetry is not patched
assert poetry_mock.installation.pip_installer.PipInstaller.run != pooetry.run_patch
def test_main__should_patch_poetry__when_pip_and_poetry_are_supported_versions(
pip_mock, poetry_mock):
# change pip version to 19.0.3
pip_mock.__version__ = "19.0.3"
# change poetry version to 0.12.17
poetry_mock.__version__ = "0.12.17"
# call main
pooetry.main()
# assert poetry is patched
assert poetry_mock.installation.pip_installer.PipInstaller.run == pooetry.run_patch
def test_main__should_not_patch_poetry__when_poetry_is_unsupported_version(
pip_mock, poetry_mock):
# change pip version to 19.0.3
pip_mock.__version__ = "19.0.3"
# change poetry version to 1.0.0b1
poetry_mock.__version__ = "1.0.0b1"
# call main
pooetry.main()
# assert poetry is not patched
assert poetry_mock.installation.pip_installer.PipInstaller.run != pooetry.run_patch
def test_main__should_return_error__when_poetry_is_not_found(
mocker, sys_exit_mock):
# patch shutil.which to return None
mocker.patch('shutil.which').return_value = None
# set sys.exit mock to return an exception
sys_exit_mock.side_effect = [Exception()]
# call main
with pytest.raises(Exception):
pooetry.main()
# assert sys.exit was called with error about poetry not found
sys_exit_mock.assert_called_once()
args, _ = sys_exit_mock.call_args
msg = args[0]
assert "poetry" in msg and "not found" in msg