Function test_process_notebook_empty_cells

tests/test_notebook_utils.py:183–203

Test that cells with an empty ``source`` are skipped. Given a notebook with 4 cells, 3 of which have empty ``source``: When ``process_notebook`` is called, Then only the non-empty cell should appear in the output (1 block => 2 triple quotes).

(write_notebook: WriteNotebookFunc)

def test_process_notebook_empty_cells(write_notebook: WriteNotebookFunc) -> None:
    """Test that cells with an empty ``source`` are skipped.

    Given a notebook with 4 cells, 3 of which have empty ``source``:
    When ``process_notebook`` is called,
    Then only the non-empty cell should appear in the output (1 block => 2 triple quotes).
    """
    expected_count = 2
    notebook_content = {
        "cells": [
            {"cell_type": "markdown", "source": []},
            {"cell_type": "code", "source": []},
            {"cell_type": "raw", "source": []},
            {"cell_type": "markdown", "source": ["# Non-empty markdown"]},
        ],
    }
    nb_path = write_notebook("empty_cells.ipynb", notebook_content)
    result = process_notebook(nb_path)

    assert result.count('"""') == expected_count, "Only one non-empty cell => 1 block => 2 triple quotes"
    assert "# Non-empty markdown" in result


def test_process_notebook_invalid_cell_type(write_notebook: WriteNotebookFunc) -> None: