Add scaling/resilience tests and expose missing RabbitMQ queue options

[niemyjski]

Summary

• New queue options on \RabbitMQMessageBusOptions: \RequestedHeartbeat, \NetworkRecoveryInterval, \DeadLetterExchange/\DeadLetterRoutingKey, \SingleActiveConsumer, and \UseDelayedRetries()\ for native delayed retry support (RabbitMQ 4.3+)
• Scaling and resilience integration tests covering competing consumers, prefetch limits, publisher confirms, memory alarm recovery, connection force-close reconnection, rolling node restarts with quorum queues, and unacked message redelivery
• Version gating tests validating deprecated global QoS fallback, confirms with version detection, and quorum queue delivery limits
• Quorum queue migration guide (\docs/quorum-queue-migration.md) documenting 5 migration approaches, code examples, incompatible features, and troubleshooting
• ChaosTestHelper enhancements: \TriggerMemoryAlarmAsync, \ClearMemoryAlarmAsync, \CloseAllConnectionsAsync\

Test Plan

• All new scaling tests pass against a local RabbitMQ instance (\dotnet test --filter RabbitMqScalingTests)
• Version gating tests pass (\dotnet test --filter RabbitMqVersionGatingTests)
• Existing \RabbitMqServerVersionTests\ continue to pass
• Build succeeds with no new warnings (\dotnet build Foundatio.RabbitMQ.slnx)
• New options are backward-compatible (all defaults preserve current behavior)

[Copilot]

Pull request overview

This PR expands the RabbitMQ transport’s configuration surface (connection + queue declaration options) and adds integration-style scaling/resilience test coverage to validate behavior across RabbitMQ versions and failure scenarios.

Changes:

• Added new RabbitMQMessageBusOptions for heartbeats/recovery timing and queue arguments (DLX, single-active-consumer, quorum delayed retries) and applied them during connection/queue creation.
• Introduced new integration tests for scaling/resilience scenarios and version-gated behaviors.
• Enhanced chaos test infrastructure to trigger/clear memory alarms and force-close connections.

Reviewed changes

Copilot reviewed 7 out of 7 changed files in this pull request and generated 3 comments.

Show a summary per file

File	Description
tests/Foundatio.RabbitMQ.Tests/Messaging/RabbitMqVersionGatingTests.cs	Adds version-gating integration tests for deprecated QoS, confirms, and quorum delivery limit.
tests/Foundatio.RabbitMQ.Tests/Messaging/RabbitMqServerVersionTests.cs	Renames version parsing/gating unit tests for clearer intent.
tests/Foundatio.RabbitMQ.Tests/Messaging/RabbitMqScalingTests.cs	Adds scaling/resilience integration tests (competing consumers, prefetch, confirms, alarms, reconnects, rolling restarts, redelivery).
tests/Foundatio.RabbitMQ.Tests/Messaging/RabbitMqChaosTests.cs	Refactors chaos tests to use updated host configuration patterns and helper initialization.
tests/Foundatio.RabbitMQ.Tests/ChaosTestHelper.cs	Adds helper operations for memory alarms and force-closing connections.
src/Foundatio.RabbitMQ/Messaging/RabbitMQMessageBusOptions.cs	Introduces new options + fluent builder methods for heartbeat, recovery, DLX, single-active-consumer, and delayed retries.
src/Foundatio.RabbitMQ/Messaging/RabbitMQMessageBus.cs	Applies new connection factory settings and injects new queue-declare arguments.

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[Copilot]

Pull request overview

Copilot reviewed 8 out of 8 changed files in this pull request and generated 4 comments.

Comments suppressed due to low confidence (1)

tests/Foundatio.RabbitMQ.Tests/Messaging/RabbitMqServerVersionTests.cs:133

• This test name suggests it validates RabbitMQMessageBus.ParseServerVersion, but the body only compares System.Version values. Consider renaming it to reflect what it actually tests, or update it to exercise the actual version parsing/gating logic so it provides meaningful coverage.

    public void ParseServerVersion_WithHigherMajor_DetectsAsAbove()
    {
        // Arrange
        var rmq50 = new Version(5, 0, 0);
        var threshold = new Version(4, 3);

        // Act
        bool isAbove = rmq50 >= threshold;

        // Assert
        Assert.True(isAbove);
    }

[Copilot]

Pull request overview

Copilot reviewed 10 out of 10 changed files in this pull request and generated 3 comments.

[Copilot]

Pull request overview

Copilot reviewed 10 out of 10 changed files in this pull request and generated 4 comments.

[Copilot]

Pull request overview

Copilot reviewed 14 out of 14 changed files in this pull request and generated 2 comments.