def test_simple_hook(tmpdir):
    nb_file = str(tmpdir.join('notebook.ipynb'))
    md_file = str(tmpdir.join('notebook.md'))
    nbformat.write(new_notebook(cells=[new_markdown_cell('Some text')]), nb_file)

    nb = jupytext.read(nb_file)
    jupytext.write(nb, md_file)

    with open(md_file) as fp:
        text = fp.read()

    assert 'Some text' in text.splitlines()

def test_inactive_cell_using_noeval(text='''This is text

```python .noeval
# This is python code.
# It should not become a code cell

'''): expected = new_notebook(cells=[new_markdown_cell(text[:-1])]) nb = jupytext.reads(text, 'md') compare_notebooks(nb, expected) text2 = jupytext.writes(nb, 'md') compare(text2, text)

def test_default_cell_markers_in_contents_manager(tmpdir):
    tmp_ipynb = str(tmpdir.join('notebook.ipynb'))
    tmp_py = str(tmpdir.join('notebook.py'))

    cm = jupytext.TextFileContentsManager()
    cm.root_dir = str(tmpdir)
    cm.default_cell_markers = "'''"

    nb = new_notebook(cells=[new_code_cell('1 + 1'), new_markdown_cell('a\nlong\ncell')],
                      metadata={'jupytext': {'formats': 'ipynb,py:percent',
                                             'notebook_metadata_filter': '-all'}})
    cm.save(model=dict(type='notebook', content=nb), path='notebook.ipynb')

    assert os.path.isfile(tmp_ipynb)
    assert os.path.isfile(tmp_py)

    with open(tmp_py) as fp:
        text = fp.read()

    compare(text, """# %%
1 + 1

# %% [markdown]
'''
a

def test_raise_on_different_cell_content(raise_on_first_difference):
    ref = new_notebook(cells=[new_markdown_cell('Cell one'), new_code_cell('Cell two')])
    test = new_notebook(cells=[new_markdown_cell('Cell one'), new_code_cell('Modified cell two')])
    with pytest.raises(NotebookDifference):
        compare_notebooks(test, ref, 'md', raise_on_first_difference=raise_on_first_difference)

def test_markdown_cell_with_code_works(nb=new_notebook(cells=[
    new_markdown_cell("""```python
1 + 1
```""")])):
    text = jupytext.writes(nb, 'Rmd')
    nb2 = jupytext.reads(text, 'Rmd')
    compare_notebooks(nb2, nb)

def nb(text):
        return new_notebook(cells=[new_markdown_cell(text)],
                            metadata={'jupytext': {'formats': 'ipynb,md,py'}})

def test_cell_markers_option_in_contents_manager(tmpdir):
    tmp_ipynb = str(tmpdir.join('notebook.ipynb'))
    tmp_py = str(tmpdir.join('notebook.py'))

    cm = jupytext.TextFileContentsManager()
    cm.root_dir = str(tmpdir)

    nb = new_notebook(cells=[new_code_cell('1 + 1'), new_markdown_cell('a\nlong\ncell')],
                      metadata={'jupytext': {'formats': 'ipynb,py:percent',
                                             'notebook_metadata_filter': '-all',
                                             'cell_markers': "'''"}})
    cm.save(model=dict(type='notebook', content=nb), path='notebook.ipynb')

    assert os.path.isfile(tmp_ipynb)
    assert os.path.isfile(tmp_py)

    with open(tmp_py) as fp:
        text = fp.read()

    compare(text, """# %%
1 + 1

# %% [markdown]
'''

def test_noeval_followed_by_code_works(text='''```python .noeval
# Not a code cell in Jupyter

1 + 1

''', expected=new_notebook(cells=[new_markdown_cell('''```python .noeval

Not a code cell in Jupyter

                                  new_code_cell('1 + 1')])):
    nb = jupytext.reads(text, 'md')
    compare_notebooks(nb, expected)
    text2 = jupytext.writes(nb, 'md')
    compare(text2, text)

def test_rst2md_option(tmpdir):
    tmp_py = str(tmpdir.join('notebook.py'))

    # Write notebook in sphinx format
    nb = new_notebook(cells=[new_markdown_cell('A short sphinx notebook'),
                             new_markdown_cell(':math:`1+1`')])
    write(nb, tmp_py, fmt='py:sphinx')

    cm = jupytext.TextFileContentsManager()
    cm.sphinx_convert_rst2md = True
    cm.root_dir = str(tmpdir)

    nb2 = cm.get('notebook.py')['content']

    # Was rst to md conversion effective?
    assert nb2.cells[2].source == '$1+1$'
    assert nb2.metadata['jupytext']['rst2md'] is False

def add_book_info():
    for nb_name in iter_notebooks():
        nb_file = os.path.join(NOTEBOOK_DIR, nb_name)
        nb = nbformat.read(nb_file, as_version=4)

        is_comment = lambda cell: cell.source.startswith(BOOK_COMMENT)

        if is_comment(nb.cells[0]):
            print('- amending comment for {0}'.format(nb_name))
            nb.cells[0].source = BOOK_INFO
        else:
            print('- inserting comment for {0}'.format(nb_name))
            nb.cells.insert(0, new_markdown_cell(BOOK_INFO))
        nbformat.write(nb, nb_file)