test(gotrue): give the list-users fixture a created_at

[spydon]

What kind of change does this PR introduce?

Test fix.

What is the current behavior?

main is red. Every test in packages/gotrue/test/admin_list_users_test.dart throws:

FormatException: Expected created_at to be a string, got Null
  package:supabase_common/src/timestamp.dart 16:5  parseIso8601
  package:gotrue/src/types/user.dart 72:18         User.fromJson
  package:gotrue/src/gotrue_admin_api.dart 179:54  GoTrueAdminApi.listUsers.<fn>

#1663 made User.createdAt a non-nullable DateTime parsed with parseIso8601, which throws when the field is absent. The mock list-users response in that file only carries an id, so listUsers() fails to parse the page before any of the pagination assertions run. It fails on all three Dart channels, see run 31509351637.

What is the new behavior?

The fixture user has a created_at, which is what the GoTrue server always sends for a user. The five tests in the file pass again, and the rest of the gotrue suite is unaffected.

Summary by CodeRabbit

• Tests
  • Updated the user listing test data to include account creation timestamps, improving coverage of returned user information.

[coderabbitai]

No actionable comments were generated in the recent review. 🎉

ℹ️ Recent review info

⚙️ Run configuration

Configuration used: Path: .coderabbit.yaml

Review profile: CHILL

Plan: Pro Plus

Run ID: cfe1fa62-50d4-454d-ac8e-b054a0bcab12

📥 Commits

Reviewing files that changed from the base of the PR and between bad3af8 and bc20164.

📒 Files selected for processing (1)

• packages/gotrue/test/admin_list_users_test.dart

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📝 Walkthrough

Walkthrough

The admin list-users test mock now includes a fixed created_at timestamp for the returned user.

Changes

Admin list-users test

Layer / File(s)	Summary
Update mocked user response packages/gotrue/test/admin_list_users_test.dart	The mocked user object now includes a fixed created_at timestamp.

Estimated code review effort: 1 (Trivial) | ~2 minutes

Suggested reviewers: dshukertjr

🚥 Pre-merge checks | ✅ 5

✅ Passed checks (5 passed)

Check name	Status	Explanation
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
Title check	✅ Passed	The title clearly and concisely describes the test fixture change by identifying the GoTrue list-users fixture and its added created_at field.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.
Linked Issues check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check	✅ Passed	Check skipped because no linked issues were found for this pull request.

✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Commit unit tests in branch fix/gotrue-list-users-created-at

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