REF/TST: Add more pytest idiom to resample/test_datetime_index.py (pandas-dev#24414)

Author: simonjayhawkins

pandas/tests/resample/conftest.py

@@ -57,53 +57,85 @@ def _simple_period_range_series(start, end, freq='D'):
 
 @pytest.fixture
 def _index_start():
+    """Fixture for parametrization of index, series and frame."""
     return datetime(2005, 1, 1)
 
 
 @pytest.fixture
 def _index_end():
+    """Fixture for parametrization of index, series and frame."""
     return datetime(2005, 1, 10)
 
 
 @pytest.fixture
 def _index_freq():
+    """Fixture for parametrization of index, series and frame."""
     return 'D'
 
 
 @pytest.fixture
-def index(_index_factory, _index_start, _index_end, _index_freq):
-    return _index_factory(_index_start, _index_end, freq=_index_freq)
+def _index_name():
+    """Fixture for parametrization of index, series and frame."""
+    return None
+
+
+@pytest.fixture
+def index(_index_factory, _index_start, _index_end, _index_freq, _index_name):
+    """Fixture for parametrization of date_range, period_range and
+    timedelta_range indexes"""
+    return _index_factory(
+        _index_start, _index_end, freq=_index_freq, name=_index_name)
 
 
 @pytest.fixture
 def _static_values(index):
+    """Fixture for parametrization of values used in parametrization of
+    Series and DataFrames with date_range, period_range and
+    timedelta_range indexes"""
     return np.arange(len(index))
 
 
+@pytest.fixture
+def _series_name():
+    """Fixture for parametrization of Series name for Series used with
+    date_range, period_range and timedelta_range indexes"""
+    return None
+
+
 @pytest.fixture
 def series(index, _series_name, _static_values):
+    """Fixture for parametrization of Series with date_range, period_range and
+    timedelta_range indexes"""
     return Series(_static_values, index=index, name=_series_name)
 
 
 @pytest.fixture
 def empty_series(series):
+    """Fixture for parametrization of empty Series with date_range,
+    period_range and timedelta_range indexes"""
     return series[:0]
 
 
 @pytest.fixture
 def frame(index, _series_name, _static_values):
+    """Fixture for parametrization of DataFrame with date_range, period_range
+    and timedelta_range indexes"""
     # _series_name is intentionally unused
     return DataFrame({'value': _static_values}, index=index)
 
 
 @pytest.fixture
 def empty_frame(series):
+    """Fixture for parametrization of empty DataFrame with date_range,
+    period_range and timedelta_range indexes"""
     index = series.index[:0]
     return DataFrame(index=index)
 
 
 @pytest.fixture(params=[Series, DataFrame])
 def series_and_frame(request, series, frame):
+    """Fixture for parametrization of Series and DataFrame with date_range,
+    period_range and timedelta_range indexes"""
     if request.param == Series:
         return series
     if request.param == DataFrame: