chore: Update dev dependencies and blob metadata tests (#1576)

* test: test_blob_metadata onboards JSON Arrow extension dtype

* build: add freezegun to dev packages

* Update tests/unit/session/test_time.py

---------

Co-authored-by: Tim Sweña (Swast) <swast@google.com>

Author: chelsea-lin

noxfile.py

@@ -69,7 +69,6 @@
 UNIT_TEST_STANDARD_DEPENDENCIES = [
     "mock",
     "asyncmock",
-    "freezegun",
     PYTEST_VERSION,
     "pytest-cov",
     "pytest-asyncio",

setup.py

@@ -83,6 +83,7 @@
         "pre-commit",
         "nox",
         "google-cloud-testutils",
+        "freezegun",
     ],
 }
 extras["all"] = list(sorted(frozenset(itertools.chain.from_iterable(extras.values()))))

tests/system/small/blob/test_properties.py

@@ -12,10 +12,10 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-import db_dtypes  # type: ignore
 import pandas as pd
 
 import bigframes
+import bigframes.dtypes as dtypes
 import bigframes.pandas as bpd
 
 
@@ -59,26 +59,24 @@ def test_blob_metadata(images_mm_df: bpd.DataFrame):
         actual = images_mm_df["blob_col"].blob.metadata().to_pandas()
         expected = pd.Series(
             [
-                {
-                    "content_type": "image/jpeg",
-                    "md5_hash": "e130ad042261a1883cd2cc06831cf748",
-                    "size": 338390,
-                    "updated": 1739574332000000,
-                },
-                {
-                    "content_type": "image/jpeg",
-                    "md5_hash": "e2ae3191ff2b809fd0935f01a537c650",
-                    "size": 43333,
-                    "updated": 1739574332000000,
-                },
+                (
+                    '{"content_type":"image/jpeg",'
+                    '"md5_hash":"e130ad042261a1883cd2cc06831cf748",'
+                    '"size":338390,'
+                    '"updated":1739574332000000}'
+                ),
+                (
+                    '{"content_type":"image/jpeg",'
+                    '"md5_hash":"e2ae3191ff2b809fd0935f01a537c650",'
+                    '"size":43333,'
+                    '"updated":1739574332000000}'
+                ),
             ],
             name="metadata",
-            dtype=db_dtypes.JSONDtype(),
-        )
-
-        pd.testing.assert_series_equal(
-            actual, expected, check_dtype=False, check_index_type=False
+            dtype=dtypes.JSON_DTYPE,
         )
+        expected.index = expected.index.astype(dtypes.INT_DTYPE)
+        pd.testing.assert_series_equal(actual, expected)
 
 
 def test_blob_content_type(images_mm_df: bpd.DataFrame):

tests/unit/session/test_time.py

@@ -15,7 +15,6 @@
 import datetime
 import unittest.mock as mock
 
-import freezegun
 import google.cloud.bigquery
 import pytest
 
@@ -47,6 +46,8 @@ def query_and_wait_mock(query, *args, **kwargs):
 
 
 def test_bqsyncedclock_get_time(bq_client):
+    freezegun = pytest.importorskip("freezegun")
+
     # this initial local time is actually irrelevant, only the ticks matter
     initial_local_datetime = datetime.datetime(
         year=1, month=7, day=12, hour=15, minute=6, second=3