Added mpl_15 decorator (#18682)

Author: WillAyd

pandas/tests/plotting/test_datetimelike.py

@@ -519,14 +519,14 @@ def test_finder_hourly(self):
             xp = Period('1/1/1999', freq='H').ordinal
         assert rs == xp
 
+    @td.skip_if_mpl_1_5
     @pytest.mark.slow
     def test_gaps(self):
         ts = tm.makeTimeSeries()
         ts[5:25] = np.nan
         _, ax = self.plt.subplots()
         ts.plot(ax=ax)
         lines = ax.get_lines()
-        tm._skip_if_mpl_1_5()
         assert len(lines) == 1
         l = lines[0]
         data = l.get_xydata()
@@ -564,6 +564,7 @@ def test_gaps(self):
         mask = data.mask
         assert mask[2:5, 1].all()
 
+    @td.skip_if_mpl_1_5
     @pytest.mark.slow
     def test_gap_upsample(self):
         low = tm.makeTimeSeries()
@@ -580,8 +581,6 @@ def test_gap_upsample(self):
         l = lines[0]
         data = l.get_xydata()
 
-        tm._skip_if_mpl_1_5()
-
         assert isinstance(data, np.ma.core.MaskedArray)
         mask = data.mask
         assert mask[5:25, 1].all()

pandas/util/_test_decorators.py

@@ -25,6 +25,7 @@ def test_foo():
 """
 
 import pytest
+from distutils.version import LooseVersion
 
 
 def safe_import(mod_name, min_version=None):
@@ -67,5 +68,18 @@ def _skip_if_no_mpl():
         return True
 
 
+def _skip_if_mpl_1_5():
+    mod = safe_import("matplotlib")
+
+    if mod:
+        v = mod.__version__
+        if LooseVersion(v) > LooseVersion('1.4.3') or str(v)[0] == '0':
+            return True
+        else:
+            mod.use("Agg", warn=False)
+
+
 skip_if_no_mpl = pytest.mark.skipif(_skip_if_no_mpl(),
                                     reason="Missing matplotlib dependency")
+skip_if_mpl_1_5 = pytest.mark.skipif(_skip_if_mpl_1_5(),
+                                     reason="matplotlib 1.5")