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import sys
from pathlib import Path
import matplotlib
import pytest
from matplotlib.testing.compare import converter
from packaging.version import Version
MPL_VERSION = Version(matplotlib.__version__)
def pytester_path(pytester):
if hasattr(pytester, "path"):
return pytester.path
return Path(pytester.tmpdir) # pytest v5
def skip_if_format_unsupported(file_format, using_hashes=False):
if file_format == 'svg' and MPL_VERSION < Version('3.3'):
pytest.skip('SVG comparison is only supported in Matplotlib 3.3 and above')
if using_hashes:
if file_format == 'pdf' and MPL_VERSION < Version('2.1'):
pytest.skip('PDF hashes are only deterministic in Matplotlib 2.1 and above')
elif file_format == 'eps' and MPL_VERSION < Version('2.1'):
pytest.skip('EPS hashes are only deterministic in Matplotlib 2.1 and above')
if using_hashes and not sys.platform.startswith('linux'):
pytest.skip('Hashes for vector graphics are only provided in the hash library for Linux')
if file_format != 'png' and file_format not in converter:
if file_format == 'svg':
pytest.skip('Comparing SVG files requires inkscape to be installed')
else:
pytest.skip('Comparing EPS and PDF files requires ghostscript to be installed')
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