Test now uses reduction_func

Author: rhshadrach

pandas/tests/groupby/test_function.py

@@ -585,33 +585,31 @@ def test_ops_general(op, targop):
     tm.assert_frame_equal(result, expected)
 
 
-@pytest.mark.parametrize(
-    "op",
-    [
-        "mean",
-        "median",
-        "std",
-        "var",
-        "sum",
-        "prod",
-        "min",
-        "max",
-        "first",
-        "last",
-        "count",
-        "sem",
-    ],
-)
-def test_ops_not_as_index(op):
+def test_ops_not_as_index(reduction_func):
     # GH 10355
     # Using as_index=False should not modify grouped column
+
+    # GH 5755
+    if reduction_func in (
+        "corrwith",
+        "idxmax",
+        "idxmin",
+        "mad",
+        "ngroup",
+        "nth",
+        "nunique",
+        "size",
+        "skew",
+    ):
+        pytest.skip("Skip until #5755 is resolved")
+
     df = DataFrame(np.random.randint(0, 5, size=(100, 2)), columns=["a", "b"])
-    expected = getattr(df.groupby("a"), op)().reset_index()
+    expected = getattr(df.groupby("a"), reduction_func)().reset_index()
 
-    result = getattr(df.groupby("a", as_index=False), op)()
+    result = getattr(df.groupby("a", as_index=False), reduction_func)()
     tm.assert_frame_equal(result, expected)
 
-    result = getattr(df.groupby("a", as_index=False)["b"], op)()
+    result = getattr(df.groupby("a", as_index=False)["b"], reduction_func)()
     tm.assert_frame_equal(result, expected)