def test_metadata_and_cell_to_header():
nb = new_notebook(metadata=dict(mainlanguage='python'),
cells=[
new_raw_cell(source="---\ntitle: Sample header\n---",
metadata={'noskipline': True})
])
header = metadata_and_cell_to_header(nb, get_format('.md'), '.md')
assert '\n'.join(header) == """---
title: Sample header
jupyter:
mainlanguage: python
---"""
assert nb.cells == []
def test_metadata_and_cell_to_header2():
nb = new_notebook(cells=[new_markdown_cell(source="Some markdown\ntext")])
header = metadata_and_cell_to_header(nb, get_format('.md'), '.md')
assert header == []
assert len(nb.cells) == 1