add more explicit test

mrocklin · Jan 23, 2019 · 37c144d · 37c144d
1 parent 9cc5807
commit 37c144d
Showing 1 changed file with 3 additions and 0 deletions.
diff --git a/dask/dataframe/tests/test_utils_dataframe.py b/dask/dataframe/tests/test_utils_dataframe.py
@@ -337,14 +337,17 @@ def test_is_dataframe_like():
     assert is_dataframe_like(df)
     assert not is_dataframe_like(df.x)
     assert not is_dataframe_like(df.index)
+    assert not is_dataframe_like(pd.DataFrame)
 
     assert not is_series_like(df)
     assert is_series_like(df.x)
     assert not is_series_like(df.index)
+    assert not is_series_like(pd.Series)
 
     assert not is_index_like(df)
     assert not is_index_like(df.x)
     assert is_index_like(df.index)
+    assert not is_index_like(pd.Index)
 
     ddf = dd.from_pandas(df, npartitions=1)
     assert is_dataframe_like(ddf)