code: def test_open_report(tmp_path):
      """Test the open_report function."""
      pytest.importorskip("h5io")
      hdf5 = str(tmp_path / "report.h5")
  
      # Test creating a new report through the open_report function
      fig1 = _get_example_figures()[0]
      with open_report(hdf5, subjects_dir=tmp_path) as report:
          assert report.subjects_dir == str(tmp_path)
          assert report.fname == str(hdf5)
          report.add_figure(fig=fig1, title="evoked response")
      # Exiting the context block should have triggered saving to HDF5
      assert Path(hdf5).exists()
  
      # Load the HDF5 version of the report and check equivalence
      report2 = open_report(hdf5)
      assert report2.fname == str(hdf5)
      assert report2.subjects_dir == report.subjects_dir
      assert report2.html == report.html
      assert report2.__getstate__() == report.__getstate__()
      assert "_fname" not in report2.__getstate__()
  
      # Check parameters when loading a report
      pytest.raises(
          ValueError, open_report, hdf5, foo="bar"
      )  # non-existing
      pytest.raises(ValueError, open_report, hdf5, subjects_dir="foo")
      open_report(hdf5, subjects_dir=str(tmp_path))  # This should work
  
      # Check that the context manager doesn't swallow exceptions
      with pytest.raises(ZeroDivisionError):
          with open_report(hdf5, subjects_dir=str(tmp_path)) as report:
              1 / 0
  
imports: import base64
  import copy
  import glob
  import os
  import pickle
  import re
  import shutil
  from io import BytesIO
  from pathlib import Path
  import numpy
  import pytest
  from matplotlib import pyplot
  from mne import Epochs, create_info, pick_channels_cov, read_cov, read_events, read_evokeds
  from mne._fiff.write import DATE_NONE
  from mne.datasets import testing
  from mne.epochs import make_metadata
  from mne.io import RawArray, read_info, read_raw_fif
  from mne.preprocessing import ICA
  from mne.report import Report, _ReportScraper, open_report, report
  from mne.report import report
  from mne.report.report import _ALLOWED_IMAGE_FORMATS, CONTENT_ORDER, _webp_supported
  from mne.utils import Bunch
  from mne.utils._testing import assert_object_equal
  from mne.viz import plot_alignment
label_desc: Use image node_id 17 for calling a global function with example usage: test_open_report(tmp_path) without return types