import pytest import os import pathlib from tests.util import THIS_DIR from black import main, jupyter_dependencies_are_installed from click.testing import CliRunner pytestmark = pytest.mark.no_jupyter runner = CliRunner() def test_ipynb_diff_with_no_change_single() -> None: jupyter_dependencies_are_installed.cache_clear() path = THIS_DIR / "data/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 = os.path.join("tests", "data", "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