create empty_frame fixture

pandas/tests/resample/conftest.py

@@ -96,6 +96,12 @@ def frame(index, _series_name, _static_values):
  return DataFrame({'value': _static_values}, index=index)
 
 
+@pytest.fixture
+def empty_frame(series):
+ index = series.index[:0]
+ return DataFrame(index=index)
+
+
 @pytest.fixture(params=[Series, DataFrame])
 def series_and_frame(request, series, frame):
  if request.param == Series:

pandas/tests/resample/test_base.py

@@ -111,20 +111,18 @@ def test_resample_empty_series_all_ts(freq, empty_series, resample_method):
 
 
 @pytest.mark.parametrize('freq', ['M', 'D', 'H'])
-def test_resample_empty_dataframe_all_ts(series, freq, resample_method):
+def test_resample_empty_dataframe_all_ts(empty_frame, freq, resample_method):
  # GH13212
- index = series.index[:0]
- f = DataFrame(index=index)
-
+ df = empty_frame
  # count retains dimensions too
- result = getattr(f.resample(freq), resample_method)()
+ result = getattr(df.resample(freq), resample_method)()
  if resample_method != 'size':
- expected = f.copy()
+ expected = df.copy()
  else:
  # GH14962
  expected = Series([])
 
- expected.index = f.index._shallow_copy(freq=freq)
+ expected.index = df.index._shallow_copy(freq=freq)
  assert_index_equal(result.index, expected.index)
  assert result.index.freq == expected.index.freq
  assert_almost_equal(result, expected, check_dtype=False)