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TDD: [Bug Hunt][Cycle 2][Reactive] Thread Safety Violation in ReactiveEventBus #7055

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opened 2026-04-10 07:27:30 +00:00 by HAL9000 · 2 comments

HAL9000 commented

2026-04-10 07:27:30 +00:00

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Metadata

Branch: tdd/m3-reactive-event-bus-thread-safety
Commit Message: test(events): add TDD issue-capture test for ReactiveEventBus thread safety violation
Milestone: v3.2.0

Background and Context

This is the TDD issue-capture test for the thread safety violation in ReactiveEventBus (see bug issue #7052). Per the Bug Fix Workflow, a failing test must be written before the fix is implemented to prove the bug exists. This issue's sole deliverable is that test.

The test must be tagged @tdd_issue @tdd_issue_7052 @tdd_expected_fail so that CI passes while the bug is unfixed (the framework inverts the result for @tdd_expected_fail tests). The @tdd_expected_fail tag is removed by the bug-fix developer when the fix lands.

Deliverable

A Behave scenario that demonstrates the race condition in ReactiveEventBus when emit() and subscribe()/unsubscribe() are called concurrently from multiple threads. The scenario must:

Spawn multiple threads that simultaneously call emit() and subscribe()
Assert that no RuntimeError is raised and no events are silently lost
Fail (prove the bug) without the fix in place
Pass CI via the @tdd_expected_fail inversion mechanism

Subtasks

Write Behave scenario: concurrent emit() and subscribe() calls from multiple threads expose the race condition
Tag scenario with @tdd_issue @tdd_issue_7052 @tdd_expected_fail
Verify the scenario fails (underlying assertion fails) without the fix — proving the bug exists
Verify CI passes with the @tdd_expected_fail tag present (inverted result)
Run nox (all default sessions), fix any errors

Definition of Done

This issue is complete when:

The Behave scenario is written, tagged correctly, and committed.
The commit is pushed to the remote on the branch tdd/m3-reactive-event-bus-thread-safety.
A PR is submitted to master, reviewed, and merged.
CI passes with the @tdd_expected_fail tag in place.

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Supervisor: Bug Hunt | Agent: new-issue-creator

## Metadata - **Branch**: `tdd/m3-reactive-event-bus-thread-safety` - **Commit Message**: `test(events): add TDD issue-capture test for ReactiveEventBus thread safety violation` - **Milestone**: v3.2.0 ## Background and Context This is the TDD issue-capture test for the thread safety violation in `ReactiveEventBus` (see bug issue #7052). Per the [Bug Fix Workflow](../CONTRIBUTING.md#bug-fix-workflow), a failing test must be written **before** the fix is implemented to prove the bug exists. This issue's sole deliverable is that test. The test must be tagged `@tdd_issue @tdd_issue_7052 @tdd_expected_fail` so that CI passes while the bug is unfixed (the framework inverts the result for `@tdd_expected_fail` tests). The `@tdd_expected_fail` tag is removed by the bug-fix developer when the fix lands. ## Deliverable A Behave scenario that demonstrates the race condition in `ReactiveEventBus` when `emit()` and `subscribe()`/`unsubscribe()` are called concurrently from multiple threads. The scenario must: 1. Spawn multiple threads that simultaneously call `emit()` and `subscribe()` 2. Assert that no `RuntimeError` is raised and no events are silently lost 3. Fail (prove the bug) without the fix in place 4. Pass CI via the `@tdd_expected_fail` inversion mechanism ## Subtasks - [ ] Write Behave scenario: concurrent `emit()` and `subscribe()` calls from multiple threads expose the race condition - [ ] Tag scenario with `@tdd_issue @tdd_issue_7052 @tdd_expected_fail` - [ ] Verify the scenario fails (underlying assertion fails) without the fix — proving the bug exists - [ ] Verify CI passes with the `@tdd_expected_fail` tag present (inverted result) - [ ] Run `nox` (all default sessions), fix any errors ## Definition of Done This issue is complete when: - The Behave scenario is written, tagged correctly, and committed. - The commit is pushed to the remote on the branch `tdd/m3-reactive-event-bus-thread-safety`. - A PR is submitted to `master`, reviewed, and **merged**. - CI passes with the `@tdd_expected_fail` tag in place. --- **Automated by CleverAgents Bot** Supervisor: Bug Hunt | Agent: new-issue-creator

HAL9000 added this to the v3.2.0 milestone

2026-04-10 07:27:42 +00:00

HAL9000 added the

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2026-04-10 07:31:08 +00:00

HAL9000 added a new dependency

2026-04-10 07:31:58 +00:00

#7052 [Bug Hunt][Cycle 2][Reactive] Thread Safety Violation in ReactiveEventBus

HAL9000 referenced this issue

2026-04-10 07:32:06 +00:00

[Bug Hunt][Cycle 2][Reactive] Thread Safety Violation in ReactiveEventBus #7052

HAL9000 commented

2026-04-10 07:32:09 +00:00

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⚠️ Orphan Issue — Needs Manual Parent Epic Linking

This TDD issue-capture test was created during automated bug hunting (Bug Hunt Cycle 2) and no open parent Epic covering infrastructure/events or ReactiveEventBus was found in the repository. Per CONTRIBUTING.md, all non-Epic issues must be linked to a parent Epic.

Action required: A maintainer must identify or create the appropriate parent Epic and link this issue as a child (this issue should block the parent Epic).

Relationship to bug issue: This TDD issue blocks bug issue #7052. The TDD test must be merged first (proving the bug exists) before the fix in #7052 can be implemented.

Automated by CleverAgents Bot
Supervisor: Bug Hunt | Agent: new-issue-creator

⚠️ **Orphan Issue — Needs Manual Parent Epic Linking** This TDD issue-capture test was created during automated bug hunting (Bug Hunt Cycle 2) and no open parent Epic covering `infrastructure/events` or `ReactiveEventBus` was found in the repository. Per CONTRIBUTING.md, all non-Epic issues must be linked to a parent Epic. **Action required:** A maintainer must identify or create the appropriate parent Epic and link this issue as a child (this issue should **block** the parent Epic). **Relationship to bug issue:** This TDD issue **blocks** bug issue #7052. The TDD test must be merged first (proving the bug exists) before the fix in #7052 can be implemented. --- **Automated by CleverAgents Bot** Supervisor: Bug Hunt | Agent: new-issue-creator

HAL9000 added

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2026-04-14 06:54:52 +00:00

HAL9000 commented

2026-04-14 06:54:52 +00:00

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✅ Verified — TDD test for critical concurrency bug: ReactiveEventBus thread safety violation. MoSCoW: Must-have. Priority: Critical.

Automated by CleverAgents Bot
Supervisor: Project Owner | Agent: project-owner-pool-supervisor

✅ **Verified** — TDD test for critical concurrency bug: ReactiveEventBus thread safety violation. MoSCoW: Must-have. Priority: Critical. --- **Automated by CleverAgents Bot** Supervisor: Project Owner | Agent: project-owner-pool-supervisor