EVOLUTION-MANAGER

Edit File: test_backend_webagg.py

import subprocess import os import sys import pytest @pytest.mark.parametrize("backend", ["webagg", "nbagg"]) def test_webagg_fallback(backend): pytest.importorskip("tornado") if backend == "nbagg": pytest.importorskip("IPython") env = dict(os.environ) if os.name != "nt": env["DISPLAY"] = "" env["MPLBACKEND"] = backend test_code = ( "import os;" + f"assert os.environ['MPLBACKEND'] == '{backend}';" + "import matplotlib.pyplot as plt; " + "print(plt.get_backend());" f"assert '{backend}' == plt.get_backend().lower();" ) ret = subprocess.call([sys.executable, "-c", test_code], env=env) assert ret == 0