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"""Test the LaTeX writer"""
import pytest
from sphinx.writers.latex import rstdim_to_latexdim
def test_rstdim_to_latexdim():
# Length units docutils supported
# https://docutils.sourceforge.io/docs/ref/rst/restructuredtext.html#length-units
assert rstdim_to_latexdim('160em') == '160em'
assert rstdim_to_latexdim('160px') == '160\\sphinxpxdimen'
assert rstdim_to_latexdim('160in') == '160in'
assert rstdim_to_latexdim('160cm') == '160cm'
assert rstdim_to_latexdim('160mm') == '160mm'
assert rstdim_to_latexdim('160pt') == '160bp'
assert rstdim_to_latexdim('160pc') == '160pc'
assert rstdim_to_latexdim('30%') == '0.300\\linewidth'
assert rstdim_to_latexdim('160') == '160\\sphinxpxdimen'
# float values
assert rstdim_to_latexdim('160.0em') == '160.0em'
assert rstdim_to_latexdim('.5em') == '.5em'
# unknown values (it might be generated by 3rd party extension)
with pytest.raises(ValueError, match='could not convert string to float: '):
rstdim_to_latexdim('unknown')
assert rstdim_to_latexdim('160.0unknown') == '160.0unknown'
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