plot_utils: add a plot_output_power() to plot the output power of multiple runs
diff --git a/tests/test_plot_utils.py b/tests/test_plot_utils.py
index 12d9b4e..4b8007a 100644
--- a/tests/test_plot_utils.py
+++ b/tests/test_plot_utils.py
@@ -162,3 +162,13 @@
 
         plot_utils.plot_input_power(runs, self.actor_order, width=20)
         matplotlib.pyplot.close('all')
+
+    def test_plot_output_power(self):
+        """plot_utils.plot_output_power() doesn't bomb"""
+
+        run1 = cr2.Run(name="first")
+        run2 = cr2.Run(name="second")
+        runs = [run1, run2]
+
+        plot_utils.plot_output_power(runs, self.actor_order, width=20)
+        matplotlib.pyplot.close('all')