TST: Datetime conftest.py improvements (#26596)

xref gh-23537

Author: h-vetinari

pandas/conftest.py

@@ -376,19 +376,25 @@ def unique_nulls_fixture(request):
              FixedOffset(0), FixedOffset(-300), timezone.utc,
              timezone(timedelta(hours=1)),
              timezone(timedelta(hours=-1), name='foo')]
+TIMEZONE_IDS = ['None', 'UTC', 'US/Eastern', 'Asia/Tokyp',
+                'dateutil/US/Pacific', 'dateutil/Asia/Singapore',
+                'dateutil.tz.tzutz()', 'dateutil.tz.tzlocal()',
+                'pytz.FixedOffset(300)', 'pytz.FixedOffset(0)',
+                'pytz.FixedOffset(-300)', 'datetime.timezone.utc',
+                'datetime.timezone.+1', 'datetime.timezone.-1.named']
 
 
-@td.parametrize_fixture_doc(str(TIMEZONES))
-@pytest.fixture(params=TIMEZONES)
+@td.parametrize_fixture_doc(str(TIMEZONE_IDS))
+@pytest.fixture(params=TIMEZONES, ids=TIMEZONE_IDS)
 def tz_naive_fixture(request):
     """
     Fixture for trying timezones including default (None): {0}
     """
     return request.param
 
 
-@td.parametrize_fixture_doc(str(TIMEZONES[1:]))
-@pytest.fixture(params=TIMEZONES[1:])
+@td.parametrize_fixture_doc(str(TIMEZONE_IDS[1:]))
+@pytest.fixture(params=TIMEZONES[1:], ids=TIMEZONE_IDS[1:])
 def tz_aware_fixture(request):
     """
     Fixture for trying explicit timezones: {0}
@@ -398,6 +404,8 @@ def tz_aware_fixture(request):
 
 # ----------------------------------------------------------------
 # Dtypes
+# ----------------------------------------------------------------
+
 UNSIGNED_INT_DTYPES = ["uint8", "uint16", "uint32", "uint64"]
 UNSIGNED_EA_INT_DTYPES = ["UInt8", "UInt16", "UInt32", "UInt64"]
 SIGNED_INT_DTYPES = [int, "int8", "int16", "int32", "int64"]
@@ -409,16 +417,16 @@ def tz_aware_fixture(request):
 COMPLEX_DTYPES = [complex, "complex64", "complex128"]
 STRING_DTYPES = [str, 'str', 'U']
 
-DATETIME_DTYPES = ['datetime64[ns]', 'M8[ns]']
-TIMEDELTA_DTYPES = ['timedelta64[ns]', 'm8[ns]']
+DATETIME64_DTYPES = ['datetime64[ns]', 'M8[ns]']
+TIMEDELTA64_DTYPES = ['timedelta64[ns]', 'm8[ns]']
 
 BOOL_DTYPES = [bool, 'bool']
 BYTES_DTYPES = [bytes, 'bytes']
 OBJECT_DTYPES = [object, 'object']
 
 ALL_REAL_DTYPES = FLOAT_DTYPES + ALL_INT_DTYPES
 ALL_NUMPY_DTYPES = (ALL_REAL_DTYPES + COMPLEX_DTYPES + STRING_DTYPES +
-                    DATETIME_DTYPES + TIMEDELTA_DTYPES + BOOL_DTYPES +
+                    DATETIME64_DTYPES + TIMEDELTA64_DTYPES + BOOL_DTYPES +
                     OBJECT_DTYPES + BYTES_DTYPES)