TST: Close figures before image comparison.

QuLogic · QuLogic · commit bdb8682b3ce1 · 2017-02-16T01:33:04.000-05:00
Since this decorator assumes that the figures available after are the
ones to check, it should close any existing figures or it will get the
wrong count.
diff --git a/lib/matplotlib/testing/decorators.py b/lib/matplotlib/testing/decorators.py
@@ -252,6 +252,7 @@ def delayed_init(self, func):
 
     def setup(self):
         func = self.func
+        plt.close('all')
         self.setup_class()
         try:
             matplotlib.style.use(self.style)
