1  import json
 2  from pathlib import Path
 3  
 4  from clint.config import Config
 5  from clint.index import SymbolIndex
 6  from clint.linter import lint_file
 7  from clint.rules.empty_notebook_cell import EmptyNotebookCell
 8  
 9  
10  def test_empty_notebook_cell(index: SymbolIndex) -> None:
11      notebook_content = {
12          "cells": [
13              {
14                  "cell_type": "code",
15                  "source": [],  # Empty cell
16                  "metadata": {},
17                  "execution_count": None,
18                  "outputs": [],
19              },
20              {
21                  "cell_type": "code",
22                  "source": ["x = 5"],
23                  "metadata": {},
24                  "execution_count": None,
25                  "outputs": [],
26              },
27              {
28                  "cell_type": "code",
29                  "source": [],  # Another empty cell
30                  "metadata": {},
31                  "execution_count": None,
32                  "outputs": [],
33              },
34          ],
35          "metadata": {
36              "kernelspec": {"display_name": "Python 3", "language": "python", "name": "python3"}
37          },
38          "nbformat": 4,
39          "nbformat_minor": 4,
40      }
41      code = json.dumps(notebook_content)
42      config = Config(select={EmptyNotebookCell.name})
43      violations = lint_file(Path("test_notebook.ipynb"), code, config, index)
44      assert len(violations) == 2
45      assert all(isinstance(v.rule, EmptyNotebookCell) for v in violations)
46      assert violations[0].cell == 1
47      assert violations[1].cell == 3