ref: remove calls to iso_format in testutils (#82461)

<!-- Describe your PR here. -->

Author: asottile-sentry

src/sentry/integrations/github/client.py

@@ -141,7 +141,7 @@ def _get_token(self, prepared_request: PreparedRequest) -> str | None:
         access_token: str | None = self.integration.metadata.get("access_token")
         expires_at: str | None = self.integration.metadata.get("expires_at")
         is_expired = (
-            bool(expires_at) and datetime.strptime(cast(str, expires_at), "%Y-%m-%dT%H:%M:%S") < now
+            bool(expires_at) and datetime.fromisoformat(expires_at).replace(tzinfo=None) < now
         )
         should_refresh = not access_token or not expires_at or is_expired
 

src/sentry/testutils/cases.py

@@ -132,7 +132,7 @@
 from sentry.snuba.metrics.naming_layer.public import TransactionMetricKey
 from sentry.tagstore.snuba.backend import SnubaTagStorage
 from sentry.testutils.factories import get_fixture_path
-from sentry.testutils.helpers.datetime import before_now, iso_format
+from sentry.testutils.helpers.datetime import before_now
 from sentry.testutils.helpers.notifications import TEST_ISSUE_OCCURRENCE
 from sentry.testutils.helpers.slack import install_slack
 from sentry.testutils.pytest.selenium import Browser
@@ -2126,7 +2126,7 @@ def create_event(self, timestamp, fingerprint=None, user=None):
         data = {
             "event_id": event_id,
             "fingerprint": [fingerprint],
-            "timestamp": iso_format(timestamp),
+            "timestamp": timestamp.isoformat(),
             "type": "error",
             # This is necessary because event type error should not exist without
             # an exception being in the payload
@@ -3388,7 +3388,7 @@ def load_default(self) -> Event:
         start, _ = self.get_start_end_from_day_ago(1000)
         return self.store_event(
             {
-                "timestamp": iso_format(start),
+                "timestamp": start.isoformat(),
                 "contexts": {
                     "trace": {
                         "type": "trace",

src/sentry/testutils/fixtures.py

@@ -29,7 +29,7 @@
 from sentry.snuba.models import QuerySubscription
 from sentry.tempest.models import TempestCredentials
 from sentry.testutils.factories import Factories
-from sentry.testutils.helpers.datetime import before_now, iso_format
+from sentry.testutils.helpers.datetime import before_now
 from sentry.testutils.silo import assume_test_silo_mode
 
 # XXX(dcramer): this is a compatibility layer to transition to pytest-based fixtures
@@ -104,7 +104,7 @@ def event(self):
             data={
                 "event_id": "a" * 32,
                 "message": "\u3053\u3093\u306b\u3061\u306f",
-                "timestamp": iso_format(before_now(seconds=1)),
+                "timestamp": before_now(seconds=1).isoformat(),
             },
             project_id=self.project.id,
         )
@@ -129,7 +129,7 @@ def integration(self):
             external_id="github:1",
             metadata={
                 "access_token": "xxxxx-xxxxxxxxx-xxxxxxxxxx-xxxxxxxxxxxx",
-                "expires_at": iso_format(timezone.now() + timedelta(days=14)),
+                "expires_at": (timezone.now() + timedelta(days=14)).isoformat(),
             },
         )
         integration.add_organization(self.organization, self.user)