Fix backend determinism tests without nose.

QuLogic · QuLogic · commit 9e3b260bfbb6 · 2017-01-22T23:12:29.000-05:00
diff --git a/lib/matplotlib/testing/determinism.py b/lib/matplotlib/testing/determinism.py
@@ -13,11 +13,11 @@
 import sys
 from subprocess import check_output
 
+import pytest
+
 import matplotlib
 from matplotlib import pyplot as plt
 
-from nose.plugins.skip import SkipTest
-
 
 def _determinism_save(objects='mhi', format="pdf", usetex=False):
     # save current value of SOURCE_DATE_EPOCH and set it
@@ -92,11 +92,11 @@ def _determinism_check(objects='mhi', format="pdf", usetex=False):
     format : str
         format string. The default value is "pdf".
     """
-    from nose.tools import assert_equal
     plots = []
     for i in range(3):
         result = check_output([sys.executable, '-R', '-c',
                                'import matplotlib; '
+                               'matplotlib._called_from_pytest = True; '
                                'matplotlib.use(%r); '
                                'from matplotlib.testing.determinism '
                                'import _determinism_save;'
@@ -106,9 +106,9 @@ def _determinism_check(objects='mhi', format="pdf", usetex=False):
     for p in plots[1:]:
         if usetex:
             if p != plots[0]:
-                raise SkipTest("failed, maybe due to ghostscript timestamps")
+                pytest.skip("failed, maybe due to ghostscript timestamps")
         else:
-            assert_equal(p, plots[0])
+            assert p == plots[0]
 
 
 def _determinism_source_date_epoch(format, string, keyword=b"CreationDate"):
@@ -130,6 +130,7 @@ def _determinism_source_date_epoch(format, string, keyword=b"CreationDate"):
     """
     buff = check_output([sys.executable, '-R', '-c',
                          'import matplotlib; '
+                         'matplotlib._called_from_pytest = True; '
                          'matplotlib.use(%r); '
                          'from matplotlib.testing.determinism '
                          'import _determinism_save;'
diff --git a/lib/matplotlib/tests/test_backend_svg.py b/lib/matplotlib/tests/test_backend_svg.py
@@ -167,6 +167,7 @@ def _test_determinism(filename, usetex):
         try:
             check_output([sys.executable, '-R', '-c',
                           'import matplotlib; '
+                          'matplotlib._called_from_pytest = True;'
                           'matplotlib.use("svg"); '
                           'from matplotlib.tests.test_backend_svg '
                           'import _test_determinism_save;'
