TST: remove some no longer necessary ArrayManager skips for groupby

pandas/tests/frame/methods/test_count.py

@@ -1,8 +1,6 @@
 import numpy as np
 import pytest
 
-import pandas.util._test_decorators as td
-
 from pandas import (
     DataFrame,
     Index,
@@ -109,7 +107,6 @@ def test_count_index_with_nan(self):
         )
         tm.assert_frame_equal(res, expected)
 
-    @td.skip_array_manager_not_yet_implemented  # TODO(ArrayManager) groupby
     def test_count_level(
         self,
         multiindex_year_month_day_dataframe_random_data,

pandas/tests/frame/methods/test_drop.py

@@ -4,7 +4,6 @@
 import pytest
 
 from pandas.errors import PerformanceWarning
-import pandas.util._test_decorators as td
 
 import pandas as pd
 from pandas import (
@@ -161,7 +160,6 @@ def test_drop(self):
         assert return_value is None
         tm.assert_frame_equal(df, expected)
 
-    @td.skip_array_manager_not_yet_implemented  # TODO(ArrayManager) groupby
     def test_drop_multiindex_not_lexsorted(self):
         # GH#11640
 

pandas/tests/frame/methods/test_reorder_levels.py

@@ -1,8 +1,6 @@
 import numpy as np
 import pytest
 
-import pandas.util._test_decorators as td
-
 from pandas import (
     DataFrame,
     MultiIndex,
@@ -52,7 +50,6 @@ def test_reorder_levels(self, frame_or_series):
         result = obj.reorder_levels(["L0", "L0", "L0"])
         tm.assert_equal(result, expected)
 
-    @td.skip_array_manager_not_yet_implemented  # TODO(ArrayManager) groupby
     def test_reorder_levels_swaplevel_equivalence(
         self, multiindex_year_month_day_dataframe_random_data
     ):

pandas/tests/frame/methods/test_reset_index.py

@@ -4,8 +4,6 @@
 import numpy as np
 import pytest
 
-import pandas.util._test_decorators as td
-
 from pandas.core.dtypes.common import (
     is_float_dtype,
     is_integer_dtype,
@@ -550,7 +548,6 @@ def test_reset_index_delevel_infer_dtype(self):
         assert is_integer_dtype(deleveled["prm1"])
         assert is_float_dtype(deleveled["prm2"])
 
-    @td.skip_array_manager_not_yet_implemented  # TODO(ArrayManager) groupby
     def test_reset_index_with_drop(
         self, multiindex_year_month_day_dataframe_random_data
     ):
@@ -649,7 +646,6 @@ def test_reset_index_empty_frame_with_datetime64_multiindex():
     tm.assert_frame_equal(result, expected)
 
 
-@td.skip_array_manager_not_yet_implemented  # TODO(ArrayManager) groupby
 def test_reset_index_empty_frame_with_datetime64_multiindex_from_groupby():
     # https://github.com/pandas-dev/pandas/issues/35657
     df = DataFrame({"c1": [10.0], "c2": ["a"], "c3": pd.to_datetime("2020-01-01")})

pandas/tests/frame/methods/test_sort_index.py

@@ -1,8 +1,6 @@
 import numpy as np
 import pytest
 
-import pandas.util._test_decorators as td
-
 import pandas as pd
 from pandas import (
     CategoricalDtype,
@@ -373,7 +371,6 @@ def test_sort_index_multiindex(self, level):
         result = df.sort_index(level=level, sort_remaining=False)
         tm.assert_frame_equal(result, expected)
 
-    @td.skip_array_manager_not_yet_implemented  # TODO(ArrayManager) groupby
     def test_sort_index_intervalindex(self):
         # this is a de-facto sort via unstack
         # confirming that we sort in the order of the bins

pandas/tests/groupby/aggregate/test_aggregate.py

@@ -136,7 +136,6 @@ def test_groupby_aggregation_multi_level_column():
     tm.assert_frame_equal(result, expected)
 
 
-@td.skip_array_manager_not_yet_implemented  # TODO(ArrayManager) non-cython agg
 def test_agg_apply_corner(ts, tsframe):
     # nothing to group, all NA
     grouped = ts.groupby(ts * np.nan)
@@ -215,7 +214,6 @@ def test_aggregate_str_func(tsframe, groupbyfunc):
     tm.assert_frame_equal(result, expected)
 
 
-@td.skip_array_manager_not_yet_implemented  # TODO(ArrayManager) non-cython agg
 def test_agg_str_with_kwarg_axis_1_raises(df, reduction_func):
     gb = df.groupby(level=0)
     if reduction_func in ("idxmax", "idxmin"):

pandas/tests/groupby/transform/test_transform.py

@@ -4,8 +4,6 @@
 import numpy as np
 import pytest
 
-import pandas.util._test_decorators as td
-
 from pandas.core.dtypes.common import (
     ensure_platform_int,
     is_timedelta64_dtype,
@@ -190,8 +188,6 @@ def test_transform_axis_1(request, transformation_func, using_array_manager):
     tm.assert_equal(result, expected)
 
 
-# TODO(ArrayManager) groupby().transform returns DataFrame backed by BlockManager
-@td.skip_array_manager_not_yet_implemented
 def test_transform_axis_ts(tsframe):
 
     # make sure that we are setting the axes

pandas/tests/reshape/merge/test_join.py

@@ -1,8 +1,6 @@
 import numpy as np
 import pytest
 
-import pandas.util._test_decorators as td
-
 import pandas as pd
 from pandas import (
     Categorical,
@@ -553,7 +551,6 @@ def test_join_non_unique_period_index(self):
         )
         tm.assert_frame_equal(result, expected)
 
-    @td.skip_array_manager_not_yet_implemented  # TODO(ArrayManager) groupby
     def test_mixed_type_join_with_suffix(self):
         # GH #916
         df = DataFrame(np.random.randn(20, 6), columns=["a", "b", "c", "d", "e", "f"])