Skip test if LaTeX is not available

Philipp Arras · Philipp Arras · commit 7ff6ded93a4b · 2020-11-02T09:12:55.000+01:00
diff --git a/lib/matplotlib/tests/test_backend_pgf.py b/lib/matplotlib/tests/test_backend_pgf.py
@@ -346,6 +346,8 @@ def test_unknown_font(caplog):
 @pytest.mark.parametrize("texsystem", ("pdflatex", "xelatex", "lualatex"))
 @pytest.mark.backend("pgf")
 def test_minus_signs_with_tex(fig_test, fig_ref, texsystem):
+    if not check_for(texsystem):
+        pytest.skip(texsystem + ' + pgf is required')
     mpl.rcParams["pgf.texsystem"] = texsystem
     fig_test.text(.5, .5, "$-1$")
     fig_ref.text(.5, .5, "$\N{MINUS SIGN}1$")
