test: remove pandas version restrictions and fix precision issue

Author: chalmerlowe

packages/google-cloud-bigquery/tests/system/test_pandas.py

@@ -1053,7 +1053,6 @@ def test_list_rows_max_results_w_bqstorage(bigquery_client):
     assert len(dataframe.index) == 100
 
 
-@pytest.mark.skipif(PANDAS_INSTALLED_VERSION[0:2] not in ["0.", "1."], reason="")
 @pytest.mark.parametrize(
     ("max_results",),
     (

packages/google-cloud-bigquery/tests/unit/test__pandas_helpers.py

@@ -551,15 +551,15 @@ def test_bq_to_arrow_array_w_nullable_scalars(module_under_test, bq_type, rows):
     ],
 )
 @pytest.mark.skipif(pandas is None, reason="Requires `pandas`")
-@pytest.mark.skipif(PANDAS_INSTALLED_VERSION[0:2] not in ["0.", "1."], reason="")
 @pytest.mark.skipif(isinstance(pyarrow, mock.Mock), reason="Requires `pyarrow`")
 def test_bq_to_arrow_array_w_pandas_timestamp(module_under_test, bq_type, rows):
     rows = [pandas.Timestamp(row) for row in rows]
     series = pandas.Series(rows)
     bq_field = schema.SchemaField("field_name", bq_type)
     arrow_array = module_under_test.bq_to_arrow_array(series, bq_field)
     roundtrip = arrow_array.to_pandas()
-    assert series.equals(roundtrip)
+    series = series.astype(roundtrip.dtype)
+    pandas.testing.assert_series_equal(series, roundtrip)
 
 
 @pytest.mark.skipif(pandas is None, reason="Requires `pandas`")