Pass usetex setting to _determinism_save

Alexis Bienvenüe · Alexis Bienvenüe · commit af4213ed07f1 · 2016-10-11T09:16:01.000+02:00
diff --git a/lib/matplotlib/testing/determinism.py b/lib/matplotlib/testing/determinism.py
@@ -13,16 +13,19 @@
 import sys
 from subprocess import check_output
 
+import matplotlib
 from matplotlib import pyplot as plt
 
 
-def _determinism_save(objects='mhi', format="pdf"):
+def _determinism_save(objects='mhi', format="pdf", usetex=False):
     # save current value of SOURCE_DATE_EPOCH and set it
     # to a constant value, so that time difference is not
     # taken into account
     sde = os.environ.pop('SOURCE_DATE_EPOCH', None)
     os.environ['SOURCE_DATE_EPOCH'] = "946684800"
 
+    matplotlib.rcParams['text.usetex'] = usetex
+
     fig = plt.figure()
 
     if 'm' in objects:
@@ -73,7 +76,7 @@ def _determinism_save(objects='mhi', format="pdf"):
         os.environ['SOURCE_DATE_EPOCH'] = sde
 
 
-def _determinism_check(objects='mhi', format="pdf", uid=""):
+def _determinism_check(objects='mhi', format="pdf", uid="", usetex=False):
     """
     Output three times the same graphs and checks that the outputs are exactly
     the same.
@@ -98,8 +101,8 @@ def _determinism_check(objects='mhi', format="pdf", uid=""):
                                'matplotlib.use(%r); '
                                'from matplotlib.testing.determinism '
                                'import _determinism_save;'
-                               '_determinism_save(%r,%r)'
-                               % (format, objects, format)])
+                               '_determinism_save(%r,%r,%r)'
+                               % (format, objects, format, usetex)])
         plots.append(result)
     for p in plots[1:]:
         assert_equal(p, plots[0])
diff --git a/lib/matplotlib/tests/test_backend_ps.py b/lib/matplotlib/tests/test_backend_ps.py
@@ -198,8 +198,7 @@ def test_determinism_all():
 @needs_ghostscript
 def test_determinism_all_tex():
     """Test for reproducible PS/tex output"""
-    matplotlib.rcParams['text.usetex'] = True
-    _determinism_check(format="ps", uid="_tex")
+    _determinism_check(format="ps", uid="_tex", usetex=True)
 
 
 if __name__ == '__main__':
