TST: Collect/Use arithmetic test fixtures (pandas-dev#22645)

pandas/tests/arithmetic/conftest.py

@@ -28,14 +28,32 @@ def zero(request):
     return request.param
 
 
+# ------------------------------------------------------------------
+# Vector Fixtures
+
 @pytest.fixture(params=[pd.Float64Index(np.arange(5, dtype='float64')),
                         pd.Int64Index(np.arange(5, dtype='int64')),
-                        pd.UInt64Index(np.arange(5, dtype='uint64'))],
+                        pd.UInt64Index(np.arange(5, dtype='uint64')),
+                        pd.RangeIndex(5)],
                 ids=lambda x: type(x).__name__)
-def idx(request):
+def numeric_idx(request):
+    """
+    Several types of numeric-dtypes Index objects
+    """
     return request.param
 
 
+@pytest.fixture
+def tdser():
+    """
+    Return a Series with dtype='timedelta64[ns]', including a NaT.
+    """
+    return pd.Series(['59 Days', '59 Days', 'NaT'], dtype='timedelta64[ns]')
+
+
+# ------------------------------------------------------------------
+# Scalar Fixtures
+
 @pytest.fixture(params=[pd.Timedelta('5m4s').to_pytimedelta(),
                         pd.Timedelta('5m4s'),
                         pd.Timedelta('5m4s').to_timedelta64()],
@@ -47,6 +65,72 @@ def scalar_td(request):
     return request.param
 
 
+@pytest.fixture(params=[pd.offsets.Day(3),
+                        pd.offsets.Hour(72),
+                        pd.Timedelta(days=3).to_pytimedelta(),
+                        pd.Timedelta('72:00:00'),
+                        np.timedelta64(3, 'D'),
+                        np.timedelta64(72, 'h')])
+def three_days(request):
+    """
+    Several timedelta-like and DateOffset objects that each represent
+    a 3-day timedelta
+    """
+    return request.param
+
+
+@pytest.fixture(params=[pd.offsets.Hour(2),
+                        pd.offsets.Minute(120),
+                        pd.Timedelta(hours=2).to_pytimedelta(),
+                        pd.Timedelta(seconds=2 * 3600),
+                        np.timedelta64(2, 'h'),
+                        np.timedelta64(120, 'm')])
+def two_hours(request):
+    """
+    Several timedelta-like and DateOffset objects that each represent
+    a 2-hour timedelta
+    """
+    return request.param
+
+
+_common_mismatch = [pd.offsets.YearBegin(2),
+                    pd.offsets.MonthBegin(1),
+                    pd.offsets.Minute()]
+
+
+@pytest.fixture(params=[pd.Timedelta(minutes=30).to_pytimedelta(),
+                        np.timedelta64(30, 's'),
+                        pd.Timedelta(seconds=30)] + _common_mismatch)
+def not_hourly(request):
+    """
+    Several timedelta-like and DateOffset instances that are _not_
+    compatible with Hourly frequencies.
+    """
+    return request.param
+
+
+@pytest.fixture(params=[np.timedelta64(4, 'h'),
+                        pd.Timedelta(hours=23).to_pytimedelta(),
+                        pd.Timedelta('23:00:00')] + _common_mismatch)
+def not_daily(request):
+    """
+    Several timedelta-like and DateOffset instances that are _not_
+    compatible with Daily frequencies.
+    """
+    return request.param
+
+
+@pytest.fixture(params=[np.timedelta64(365, 'D'),
+                        pd.Timedelta(days=365).to_pytimedelta(),
+                        pd.Timedelta(days=365)] + _common_mismatch)
+def mismatched_freq(request):
+    """
+    Several timedelta-like and DateOffset instances that are _not_
+    compatible with Monthly or Annual frequencies.
+    """
+    return request.param
+
+
 # ------------------------------------------------------------------
 
 @pytest.fixture(params=[pd.Index, pd.Series, pd.DataFrame],
@@ -59,6 +143,18 @@ def box(request):
     return request.param
 
 
+@pytest.fixture(params=[pd.Index,
+                        pd.Series,
+                        pytest.param(pd.DataFrame,
+                                     marks=pytest.mark.xfail(strict=True))],
+                ids=lambda x: x.__name__)
+def box_df_fail(request):
+    """
+    Fixture equivalent to `box` fixture but xfailing the DataFrame case.
+    """
+    return request.param
+
+
 @pytest.fixture(params=[
     pd.Index,
     pd.Series,