TST: Fix sparse quantile test

Author: Licht-T

pandas/tests/sparse/test_frame.py

@@ -1705,25 +1705,31 @@ def test_where_with_bool_data_and_complex_other(self):
         tm.assert_sp_frame_equal(result, sparse_expected)
 
     def test_quantile(self):
-        data = [[1, 1], [2, 10], [3, 100], [4, 100]]
+        # GH 17386
+        data = [[1, 1], [2, 10], [3, 100], [nan, nan]]
         q = 0.1
 
         sparse_df = SparseDataFrame(data)
         result = sparse_df.quantile(q)
 
         dense_df = DataFrame(data)
-        expected = dense_df.quantile(q)
+        dense_expected = dense_df.quantile(q)
+        sparse_expected = SparseSeries(dense_expected)
 
-        tm.assert_series_equal(result, expected)
+        tm.assert_series_equal(result, dense_expected)
+        tm.assert_sp_series_equal(result, sparse_expected)
 
     def test_quantile_multi(self):
-        data = [[1, 1], [2, 10], [3, 100], [4, 100]]
+        # GH 17386
+        data = [[1, 1], [2, 10], [3, 100], [nan, nan]]
         q = [0.1, 0.5]
 
         sparse_df = SparseDataFrame(data)
         result = sparse_df.quantile(q)
 
         dense_df = DataFrame(data)
-        expected = dense_df.quantile(q)
+        dense_expected = dense_df.quantile(q)
+        sparse_expected = SparseDataFrame(dense_expected)
 
-        tm.assert_frame_equal(result, expected)
+        tm.assert_frame_equal(result, dense_expected)
+        tm.assert_sp_frame_equal(result, sparse_expected)