def test_add_custom_css(tmpdir):
"""Test adding custom CSS rules to the report."""
tempdir = str(tmpdir)
fname = op.join(tempdir, 'report.html')
fig = plt.figure() # Empty figure
report = Report()
report.add_figs_to_section(figs=fig, captions='Test section')
custom_css = '.report_custom { color: red; }'
report.add_custom_css(css=custom_css)
assert custom_css in report.include
report.save(fname, open_browser=False)
with open(fname, 'rb') as fid:
html = fid.read().decode('utf-8')
assert custom_css in html
