tests/test_no_ipynb.py

   1 import pathlib
   2
   3 import pytest
   4 from click.testing import CliRunner
   5
   6 from black import jupyter_dependencies_are_installed, main
   7 from tests.util import get_case_path
   8
   9 pytestmark = pytest.mark.no_jupyter
  10
  11 runner = CliRunner()
  12
  13
  14 def test_ipynb_diff_with_no_change_single() -> None:
  15     jupyter_dependencies_are_installed.cache_clear()
  16     path = get_case_path("jupyter", "notebook_trailing_newline.ipynb")
  17     result = runner.invoke(main, [str(path)])
  18     expected_output = (
  19         "Skipping .ipynb files as Jupyter dependencies are not installed.\n"
  20         'You can fix this by running ``pip install "black[jupyter]"``\n'
  21     )
  22     assert expected_output in result.output
  23
  24
  25 def test_ipynb_diff_with_no_change_dir(tmp_path: pathlib.Path) -> None:
  26     jupyter_dependencies_are_installed.cache_clear()
  27     runner = CliRunner()
  28     nb = get_case_path("jupyter", "notebook_trailing_newline.ipynb")
  29     tmp_nb = tmp_path / "notebook.ipynb"
  30     with open(nb) as src, open(tmp_nb, "w") as dst:
  31         dst.write(src.read())
  32     result = runner.invoke(main, [str(tmp_path)])
  33     expected_output = (
  34         "Skipping .ipynb files as Jupyter dependencies are not installed.\n"
  35         'You can fix this by running ``pip install "black[jupyter]"``\n'
  36     )
  37     assert expected_output in result.output