test: use separate clients for realtime presence test groups

[owenpearson]

some CI flakes were race conditions when tearing down and setting up between two different test groups, this separates the clients used for each group to avoid that.

Summary by CodeRabbit

• Tests
  • Updated presence-related tests with renamed client identifiers and corresponding event assertions to ensure consistent test coverage and validation of presence functionality.

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[coderabbitai]

Walkthrough

Hard-coded client_id strings in presence tests are replaced with descriptive test-specific identifiers (e.g., 'client1' to 'basics_client1', 'get_client1', 'subscribe_client1'). All related presence event checks, member assertions, and callback verifications are updated accordingly. No test logic or control flow changes.

Changes

Cohort / File(s)	Summary
Test client_id standardization test/ably/realtime/realtimepresence_test.py	Replaced hard-coded client_id strings with descriptive test-specific identifiers across multiple test cases; updated all related presence event assertions, member checks, and subscription callbacks to reflect new identifiers

Estimated code review effort

🎯 2 (Simple) | ⏱️ ~10 minutes

• Homogeneous changes with consistent string replacement pattern across test cases
• Test-only modifications with no production code impact
• Verify identifier naming consistency and that all related assertions updated correctly

Poem

🐰 Whiskers twitch as IDs align,
From generic names to ones so fine,
Basics, get, and subscribe declare,
Each client distinct with thoughtful care!
Tests now speak with clarity bright, ✨

Pre-merge checks and finishing touches

✅ Passed checks (3 passed)

Check name	Status	Explanation
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
Title check	✅ Passed	The title clearly and accurately summarizes the main change: separating client identifiers across different test groups in realtime presence tests to prevent race conditions.
Docstring Coverage	✅ Passed	Docstring coverage is 85.71% which is sufficient. The required threshold is 80.00%.

✨ Finishing touches

• 📝 Generate docstrings

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Post copyable unit tests in a comment
• Commit unit tests in branch separate-presence-test-clients

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📥 Commits

Reviewing files that changed from the base of the PR and between 82e16dc and dae7964.

📒 Files selected for processing (1)

• test/ably/realtime/realtimepresence_test.py (11 hunks)

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• GitHub Check: check (3.12)
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🔇 Additional comments (4)

test/ably/realtime/realtimepresence_test.py (4)

43-135: LGTM! Client ID isolation improves test reliability.

The renaming of client IDs from generic 'client1'/'client2' to 'basics_client1'/'basics_client2' is consistent throughout this test class. All setup fixtures (lines 44, 48), presence event checks (lines 69, 82), member assertions (line 101), and event tuples (lines 128, 135) have been updated accordingly. This change effectively prevents race conditions between test groups during teardown/setup.

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196-255: LGTM! Consistent client ID updates.

The client IDs have been updated to 'get_client1'/'get_client2' throughout this test class. All references in setup fixtures (lines 197, 201) and member assertions (lines 229, 255) are consistent with the new naming scheme.

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290-332: LGTM! Complete client ID migration.

The client IDs have been successfully updated to 'subscribe_client1'/'subscribe_client2'. All references in setup fixtures (lines 291, 295), presence callbacks (line 315), and assertions (line 332) are consistent with the new identifiers.

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33-352: Overall approach is sound and addresses the CI flakes effectively.

The systematic renaming of client IDs to test-group-specific identifiers (e.g., 'basics_client1', 'get_client1', 'subscribe_client1') successfully isolates test groups from each other. The remaining test classes (TestRealtimePresenceEnterClient, TestRealtimePresenceConnectionLifecycle, TestRealtimePresenceAutoReentry, TestRealtimePresenceSyncBehavior) already use unique client identifiers (e.g., 'test_client', 'observer', 'enterer', 'listener', 'main', 'continuous', 'leaves') or wildcards ('*'), so they should not experience similar race conditions.

All changes are mechanical, complete, and consistent with no alterations to test logic.

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