xfail value_counts tests

Pandas is deferring that till later.

Author: TomAugspurger

cyberpandas/test_interface.py

@@ -80,4 +80,7 @@ class TestMissing(base.BaseMissingTests):
 
 
 class TestMethods(base.BaseMethodsTests):
-    pass
+    @pytest.mark.parametrize('dropna', [True, False])
+    @pytest.mark.xfail(reason='upstream')
+    def test_value_counts(data, dropna):
+        pass

cyberpandas/test_ip.py

@@ -149,6 +149,7 @@ def test_ops(tup):
     tm.assert_numpy_array_equal(r1, r2)
 
 
+@pytest.mark.xfail(reason='upstream')
 def test_value_counts():
     x = ip.IPArray([0, 0, 1])
     result = x.value_counts()