Add test for tight=True in autoscale

Author: jenshnielsen

lib/matplotlib/tests/test_axes.py

@@ -167,6 +167,16 @@ def test_autoscale_tiny_range():
         ax[i].plot([0, 1], [1, 1 + y1])
 
 
+@cleanup
+def test_autoscale_tight():
+    fig, ax = plt.subplots(1, 1)
+    ax.plot([1, 2, 3, 4])
+    ax.autoscale(enable=True, axis='x', tight=False)
+    ax.autoscale(enable=True, axis='y', tight=True)
+    assert_allclose(ax.get_xlim(), (-0.15, 3.15))
+    assert_allclose(ax.get_ylim(), (1.0, 4.0))
+
+
 @image_comparison(baseline_images=['offset_points'],
                   remove_text=True)
 def test_basic_annotate():