TST: spin the event loop

tacaswell · tacaswell · commit 5f2bcbb4c59d · 2020-05-23T14:06:57.000-04:00
This makes sure the GUI framework has a chance to run the end-of-life
cycles to clean up any closed/deleted but not yet fully destroyed
objects.
diff --git a/tools/memleak.py b/tools/memleak.py
@@ -113,6 +113,7 @@ def __call__(self):
             ax.pcolor(10 * np.random.rand(50, 50))
 
         fig.savefig(BytesIO(), dpi=75)
+        fig.canvas.flush_events()
         plt.close(1)
 
 
