TST: Catch warnings when looking for optional deps.

QuLogic · QuLogic · commit d82d0f7a2b40 · 2018-09-28T17:27:26.000-04:00
diff --git a/lib/matplotlib/tests/test_backend_pdf.py b/lib/matplotlib/tests/test_backend_pdf.py
@@ -2,6 +2,7 @@
 import os
 import sys
 import tempfile
+import warnings
 
 import numpy as np
 import pytest
@@ -14,9 +15,11 @@
                                             _determinism_check)
 
 
-needs_usetex = pytest.mark.skipif(
-    not checkdep_usetex(True),
-    reason="This test needs a TeX installation")
+with warnings.catch_warnings():
+    warnings.simplefilter('ignore')
+    needs_usetex = pytest.mark.skipif(
+        not checkdep_usetex(True),
+        reason="This test needs a TeX installation")
 
 
 @image_comparison(baseline_images=['pdf_use14corefonts'],
diff --git a/lib/matplotlib/tests/test_backend_ps.py b/lib/matplotlib/tests/test_backend_ps.py
@@ -3,6 +3,7 @@
 from pathlib import Path
 import re
 import tempfile
+import warnings
 
 import pytest
 
@@ -14,12 +15,14 @@
                                             _determinism_check)
 
 
-needs_ghostscript = pytest.mark.skipif(
-    matplotlib.checkdep_ghostscript()[0] is None,
-    reason="This test needs a ghostscript installation")
-needs_usetex = pytest.mark.skipif(
-    not matplotlib.checkdep_usetex(True),
-    reason="This test needs a TeX installation")
+with warnings.catch_warnings():
+    warnings.simplefilter('ignore')
+    needs_ghostscript = pytest.mark.skipif(
+        matplotlib.checkdep_ghostscript()[0] is None,
+        reason="This test needs a ghostscript installation")
+    needs_usetex = pytest.mark.skipif(
+        not matplotlib.checkdep_usetex(True),
+        reason="This test needs a TeX installation")
 
 
 # This tests tends to hit a TeX cache lock on AppVeyor.
diff --git a/lib/matplotlib/tests/test_backend_svg.py b/lib/matplotlib/tests/test_backend_svg.py
@@ -2,6 +2,7 @@
 from io import BytesIO
 import os
 import tempfile
+import warnings
 import xml.parsers.expat
 
 import pytest
@@ -12,9 +13,11 @@
 from matplotlib import dviread
 
 
-needs_usetex = pytest.mark.skipif(
-    not matplotlib.checkdep_usetex(True),
-    reason="This test needs a TeX installation")
+with warnings.catch_warnings():
+    warnings.simplefilter('ignore')
+    needs_usetex = pytest.mark.skipif(
+        not matplotlib.checkdep_usetex(True),
+        reason="This test needs a TeX installation")
 
 
 def test_visibility():
diff --git a/lib/matplotlib/tests/test_text.py b/lib/matplotlib/tests/test_text.py
@@ -11,9 +11,11 @@
 from matplotlib.testing.decorators import image_comparison
 
 
-needs_usetex = pytest.mark.skipif(
-    not matplotlib.checkdep_usetex(True),
-    reason="This test needs a TeX installation")
+with warnings.catch_warnings():
+    warnings.simplefilter('ignore')
+    needs_usetex = pytest.mark.skipif(
+        not matplotlib.checkdep_usetex(True),
+        reason="This test needs a TeX installation")
 
 
 @image_comparison(baseline_images=['font_styles'])
diff --git a/lib/matplotlib/tests/test_usetex.py b/lib/matplotlib/tests/test_usetex.py
@@ -1,12 +1,20 @@
+import warnings
+
 import pytest
 
 import matplotlib
 from matplotlib.testing.decorators import image_comparison
 import matplotlib.pyplot as plt
 
 
-@pytest.mark.skipif(not matplotlib.checkdep_usetex(True),
-                    reason='Missing TeX or Ghostscript or dvipng')
+with warnings.catch_warnings():
+    warnings.simplefilter('ignore')
+    needs_usetex = pytest.mark.skipif(
+        not matplotlib.checkdep_usetex(True),
+        reason='Missing TeX of Ghostscript or dvipng')
+
+
+@needs_usetex
 @image_comparison(baseline_images=['test_usetex'],
                   extensions=['pdf', 'png'],
                   tol=0.3)
