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43 lines
1.4 KiB
Python
43 lines
1.4 KiB
Python
import os
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from pathlib import Path
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from tempfile import TemporaryDirectory
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import pytest
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from matplotlib.testing import subprocess_run_for_testing
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nbformat = pytest.importorskip('nbformat')
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pytest.importorskip('nbconvert')
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pytest.importorskip('ipykernel')
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# From https://blog.thedataincubator.com/2016/06/testing-jupyter-notebooks/
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def test_ipynb():
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nb_path = Path(__file__).parent / 'test_nbagg_01.ipynb'
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with TemporaryDirectory() as tmpdir:
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out_path = Path(tmpdir, "out.ipynb")
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subprocess_run_for_testing(
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["jupyter", "nbconvert", "--to", "notebook",
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"--execute", "--ExecutePreprocessor.timeout=500",
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"--output", str(out_path), str(nb_path)],
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env={**os.environ, "IPYTHONDIR": tmpdir},
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check=True)
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with out_path.open() as out:
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nb = nbformat.read(out, nbformat.current_nbformat)
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errors = [output for cell in nb.cells for output in cell.get("outputs", [])
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if output.output_type == "error"]
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assert not errors
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import IPython
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if IPython.version_info[:2] >= (8, 24):
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expected_backend = "notebook"
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else:
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# This code can be removed when Python 3.12, the latest version supported by
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# IPython < 8.24, reaches end-of-life in late 2028.
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expected_backend = "nbAgg"
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backend_outputs = nb.cells[2]["outputs"]
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assert backend_outputs[0]["data"]["text/plain"] == f"'{expected_backend}'"
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