WIP

Author: jonashaag

.github/workflows/ubuntu.yml

@@ -12,10 +12,6 @@ on:
     paths-ignore:
       - "doc/**"
 
-env:
-  PANDAS_CI: 1
-  PYTEST_TARGET: pandas
-
 jobs:
   pytest:
     runs-on: ubuntu-latest
@@ -66,6 +62,7 @@ jobs:
       fail-fast: false
     name: ${{ matrix.name || format('{0} pyarrow={1} {2}', matrix.env_file, matrix.pyarrow_version, matrix.pattern) }}
     env:
+      PANDAS_CI: 1
       ENV_FILE: ci/deps/${{ matrix.env_file }}
       PATTERN: ${{ matrix.pattern }}
       EXTRA_APT: ${{ matrix.extra_apt || '' }}

pandas/tests/arithmetic/test_datetime64.py

@@ -1298,9 +1298,7 @@ def test_dti_add_tick_tzaware(self, tz_aware_fixture, box_with_array):
             roundtrip = offset - scalar
             tm.assert_equal(roundtrip, dates)
 
-            msg = "|".join(
-                ["bad operand type for unary -", "cannot subtract DatetimeArray"]
-            )
+            msg = "cannot subtract|(bad|unsupported) operand type for unary"
             with pytest.raises(TypeError, match=msg):
                 scalar - dates
 
@@ -1915,7 +1913,7 @@ def test_datetime64_ops_nat(self):
 
         # subtraction
         tm.assert_series_equal(-NaT + datetime_series, nat_series_dtype_timestamp)
-        msg = "bad operand type for unary -: 'DatetimeArray'"
+        msg = "(bad|unsupported) operand type for unary"
         with pytest.raises(TypeError, match=msg):
             -single_nat_dtype_datetime + datetime_series