Added tests for parallel coordinates plotting

Author: orbitfold

pandas/tests/test_graphics.py

@@ -271,6 +271,14 @@ def test_andrews_curves(self):
         df = read_csv(path)
         _check_plot_works(andrews_curves, df, 'Name')
 
+    @slow
+    def test_parallel_coordinates(self):
+        from pandas import read_csv
+        from pandas.tools.plotting import parallel_coordinates
+        path = os.path.join(curpath(), 'data/iris.csv')
+        df = read_csv(path)
+        _check_plot_works(parallel_coordinates, df, 'Name')
+
     @slow
     def test_plot_int_columns(self):
         df = DataFrame(np.random.randn(100, 4)).cumsum()