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"""
pytest markers for the internal Matplotlib test suite.
"""
import logging
import shutil
import pytest
import matplotlib.testing
import matplotlib.testing.compare
from matplotlib import _get_executable_info, ExecutableNotFoundError
_log = logging.getLogger(__name__)
def _checkdep_usetex() -> bool:
if not shutil.which("tex"):
_log.warning("usetex mode requires TeX.")
return False
try:
_get_executable_info("dvipng")
except ExecutableNotFoundError:
_log.warning("usetex mode requires dvipng.")
return False
try:
_get_executable_info("gs")
except ExecutableNotFoundError:
_log.warning("usetex mode requires ghostscript.")
return False
return True
needs_ghostscript = pytest.mark.skipif(
"eps" not in matplotlib.testing.compare.converter,
reason="This test needs a ghostscript installation")
needs_pgf_lualatex = pytest.mark.skipif(
not matplotlib.testing._check_for_pgf('lualatex'),
reason='lualatex + pgf is required')
needs_pgf_pdflatex = pytest.mark.skipif(
not matplotlib.testing._check_for_pgf('pdflatex'),
reason='pdflatex + pgf is required')
needs_pgf_xelatex = pytest.mark.skipif(
not matplotlib.testing._check_for_pgf('xelatex'),
reason='xelatex + pgf is required')
needs_usetex = pytest.mark.skipif(
not _checkdep_usetex(),
reason="This test needs a TeX installation")
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