Add a unit test for pandas-dev#9351.

Author: ResidentMario

pandas/tests/plotting/test_hist_method.py

@@ -238,6 +238,20 @@ def test_hist_layout(self):
         with tm.assertRaises(ValueError):
             df.hist(layout=(-1, -1))
 
+    @slow
+    def test_tight_layout(self):
+        tm._skip_if_mpl_1()
+
+        df = DataFrame(randn(100, 2))
+        df.plot.hist()
+
+        try:
+            self.plt.tight_layout()
+        except AttributeError:
+            raise
+
+        tm.close()
+
 
 @tm.mplskip
 class TestDataFrameGroupByPlots(TestPlotBase):

pandas/util/testing.py

@@ -286,6 +286,14 @@ def _skip_if_mpl_1_5():
         pytest.skip("matplotlib 1.5")
 
 
+def _skip_if_mpl_1():
+    import matplotlib
+    v = matplotlib.__version__
+    if v < LooseVersion('2.0.0') or v[0] == '0' or v[0] == '1':
+        import pytest
+        pytest.skip("matplotlib 1.5")
+
+
 def _skip_if_no_scipy():
     try:
         import scipy.stats  # noqa