import pathlib import pytest from click.testing import CliRunner from black import jupyter_dependencies_are_installed, main from tests.util import get_case_path pytestmark = pytest.mark.no_jupyter runner = CliRunner() def test_ipynb_diff_with_no_change_single() -> None: jupyter_dependencies_are_installed.cache_clear() path = get_case_path("jupyter", "notebook_trailing_newline.ipynb") result = runner.invoke(main, [str(path)]) expected_output = ( "Skipping .ipynb files as Jupyter dependencies are not installed.\n" 'You can fix this by running ``pip install "black[jupyter]"``\n' ) assert expected_output in result.output def test_ipynb_diff_with_no_change_dir(tmp_path: pathlib.Path) -> None: jupyter_dependencies_are_installed.cache_clear() runner = CliRunner() nb = get_case_path("jupyter", "notebook_trailing_newline.ipynb") tmp_nb = tmp_path / "notebook.ipynb" with open(nb) as src, open(tmp_nb, "w") as dst: dst.write(src.read()) result = runner.invoke(main, [str(tmp_path)]) expected_output = ( "Skipping .ipynb files as Jupyter dependencies are not installed.\n" 'You can fix this by running ``pip install "black[jupyter]"``\n' ) assert expected_output in result.output