TST: fix errant tight_layout test (pandas-dev#15671)

closes pandas-dev#9351

Author: ResidentMario

pandas/tests/plotting/common.py

@@ -53,6 +53,7 @@ def setUp(self):
         self.mpl_ge_1_4_0 = plotting._mpl_ge_1_4_0()
         self.mpl_ge_1_5_0 = plotting._mpl_ge_1_5_0()
         self.mpl_ge_2_0_0 = plotting._mpl_ge_2_0_0()
+        self.mpl_ge_2_0_1 = plotting._mpl_ge_2_0_1()
 
         if self.mpl_ge_1_4_0:
             self.bp_n_objects = 7

pandas/tests/plotting/test_hist_method.py

@@ -241,8 +241,8 @@ def test_hist_layout(self):
     @slow
     # GH 9351
     def test_tight_layout(self):
-        if self.mpl_ge_2_0_0:
-            df = DataFrame(randn(100, 2))
+        if self.mpl_ge_2_0_1:
+            df = DataFrame(randn(100, 3))
             _check_plot_works(df.hist)
             self.plt.tight_layout()
 

pandas/tools/plotting.py

@@ -150,6 +150,14 @@ def _mpl_ge_2_0_0():
         return False
 
 
+def _mpl_ge_2_0_1():
+    try:
+        import matplotlib
+        return matplotlib.__version__ >= LooseVersion('2.0.1')
+    except ImportError:
+        return False
+
+
 if _mpl_ge_1_5_0():
     # Compat with mp 1.5, which uses cycler.
     import cycler