code: def test_qmd_to_ipynb(
      qmd="""Some text
  
  ```{python}
  1 + 1
  ```
  """,
      nb=new_notebook(
          cells=[
              new_markdown_cell("Some text"),
              new_code_cell("1 + 1"),
          ],
          metadata={
              "kernelspec": {
                  "display_name": "python_kernel",
                  "language": "python",
                  "name": "python_kernel",
              }
          },
      ),
  ):
      nb2 = jupytext.reads(qmd, "qmd")
      compare_notebooks(nb2, nb)
  
      # after a round trip we do get a yaml header.
      # here we remove it to make the comparison
      qmd2 = jupytext.writes(nb, "qmd")
      qmd2_without_header = qmd2.rsplit("---\n\n", 1)[1]
      compare(qmd2_without_header, qmd)
  
imports: import pytest
  from nbformat.v4.nbbase import new_code_cell, new_markdown_cell, new_notebook
  import jupytext
  from jupytext.compare import compare, compare_notebooks
label_desc: Use image node_id 1 for calling a global function with example usage: test_qmd_to_ipynb(qmd, nb) without return types