plt.tight_layout skipped in test mode

Wrap/Python/ba_plot.py

@@ -462,7 +462,8 @@ def plot_simulation_result(result):
         plot_specular_curve(result, **plotargs)
     else:
         plot_simres(result, **plotargs)
-    plt.tight_layout()
+    if do_show or figfile: # skip in test mode, saves about 0.2 s
+        plt.tight_layout()
 
     show_or_export()