[ECO-4988] Implement (some of) Room Lifecycle Monitoring spec #67
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Actionable comments posted: 9
🧹 Outside diff range and nitpick comments (8)
Tests/AblyChatTests/Mocks/MockRoomLifecycleContributor.swift (2)
5-8: LGTM: Properties are well-defined. Consider adding documentation.The properties are correctly defined:
featureandchannelare appropriately marked asnonisolated.emitDiscontinuityArgumentsis correctly marked asprivate(set).Consider adding documentation comments to describe the purpose of each property, especially for
emitDiscontinuityArguments. This would enhance the readability and maintainability of the mock object.
15-17: LGTM: emitDiscontinuity method is well-implemented. Consider adding a completion handler.The
emitDiscontinuitymethod correctly appends the error to theemitDiscontinuityArgumentsarray, allowing for verification in tests. The async marking is appropriate.Consider adding an optional completion handler parameter to simulate asynchronous behavior more realistically:
func emitDiscontinuity(_ error: ARTErrorInfo, completion: (() -> Void)? = nil) async { emitDiscontinuityArguments.append(error) await Task.yield() // Simulate some asynchronous work completion?() }This would allow tests to verify both the method call and its completion.
Tests/AblyChatTests/Mocks/MockRoomLifecycleContributorChannel.swift (1)
10-11: Address the TODO: Clean up old subscriptionsThe TODO comment indicates the need to clean up old subscriptions to prevent potential memory leaks. It's important to implement this to manage resources effectively.
Would you like assistance in implementing the cleanup mechanism for subscriptions? I can help draft a solution or open a GitHub issue to track this task.
Sources/AblyChat/RoomLifecycleManager.swift (1)
259-260: Remove emptydefaultcase if not neededIn the
switchstatement handlingstateChange.event, thedefaultcase is empty:default: break }If all possible cases are already handled explicitly, you can remove the
defaultcase. This can help the compiler warn you if new cases are added to the enum in the future and are not handled in theswitchstatement.Tests/AblyChatTests/RoomLifecycleManagerTests.swift (4)
200-200: Address the TODO regarding pending discontinuity eventsThere's a TODO comment questioning the intended behavior when emitting pending discontinuity events. After confirming the correct behavior, please update the code and remove the TODO comment.
Would you like assistance in implementing the confirmed behavior or opening a GitHub issue to track this task?
747-747: Clarify and resolve the TODO in the test caseThere's a TODO comment seeking clarification about the expected behavior in specification point CHA-RL4a1. Once you've obtained the necessary information, please update the test accordingly and remove the TODO comment.
Let me know if you need help interpreting the specification and updating the test.
808-808: Clarify the meaning of the specification point in CHA-RL4b1There's uncertainty about the phrase "and the particular contributor has been attached previously" in the spec. After obtaining clarification, please update the implementation and remove the TODO comment.
Would you like assistance in interpreting this specification point and adjusting the code accordingly?
850-850: Correct grammatical error in test commentIn the test comment, change "A contributor emits an FAILED event" to "A contributor emits a FAILED event" for proper grammar.
Apply this diff:
-// When: A contributor emits an FAILED event +// When: A contributor emits a FAILED event
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📒 Files selected for processing (5)
- Package.swift (1 hunks)
- Sources/AblyChat/RoomLifecycleManager.swift (6 hunks)
- Tests/AblyChatTests/Mocks/MockRoomLifecycleContributor.swift (1 hunks)
- Tests/AblyChatTests/Mocks/MockRoomLifecycleContributorChannel.swift (3 hunks)
- Tests/AblyChatTests/RoomLifecycleManagerTests.swift (29 hunks)
🧰 Additional context used
📓 Learnings (2)
Sources/AblyChat/RoomLifecycleManager.swift (1)
Learnt from: lawrence-forooghian PR: ably-labs/ably-chat-swift#54 File: Sources/AblyChat/RoomLifecycleManager.swift:0-0 Timestamp: 2024-09-18T18:34:37.252Z Learning: In `RoomLifecycleManager`, handling of unexpected contributor states after attach failure will be addressed in issue #49.Tests/AblyChatTests/RoomLifecycleManagerTests.swift (3)
Learnt from: lawrence-forooghian PR: ably-labs/ably-chat-swift#54 File: Tests/AblyChatTests/RoomLifecycleManagerTests.swift:335-335 Timestamp: 2024-09-23T19:56:39.435Z Learning: In Swift Testing, test method names do not need to start with `test`.Learnt from: lawrence-forooghian PR: ably-labs/ably-chat-swift#54 File: Tests/AblyChatTests/RoomLifecycleManagerTests.swift:499-504 Timestamp: 2024-10-01T12:47:28.179Z Learning: In test closures, parameters like `callCount` may be used to track invocation counts correctly across invocations.Learnt from: lawrence-forooghian PR: ably-labs/ably-chat-swift#54 File: Tests/AblyChatTests/RoomLifecycleManagerTests.swift:627-631 Timestamp: 2024-10-01T12:55:21.968Z Learning: The closure `detachImpl` in `RoomLifecycleManagerTests.swift` functions as intended without external state variables to track invocation count.
🔇 Additional comments (11)
Tests/AblyChatTests/Mocks/MockRoomLifecycleContributor.swift (3)
1-4: LGTM: Imports and protocol conformance are correct.The import statements and protocol conformance are appropriate for a mock object in a test file. The use of
@testable import AblyChatallows access to internal members, which is useful for comprehensive testing.
10-13: LGTM: Initializer is correctly implemented.The initializer properly sets up the mock object by assigning the input parameters to their corresponding properties. It's concise and does exactly what it needs to do.
1-18: Overall, the MockRoomLifecycleContributor is well-implemented and aligns with the PR objectives.This mock implementation of
RoomLifecycleContributorprovides a solid foundation for testing the Room Lifecycle Monitoring functionality. It correctly captures theemitDiscontinuitycalls, allowing for verification in tests.A few minor enhancements have been suggested:
- Adding documentation comments to properties for improved readability.
- Considering the addition of a completion handler to
emitDiscontinuityfor more realistic asynchronous behavior simulation.These suggestions, if implemented, would further improve the mock's utility in comprehensive testing scenarios.
Package.swift (4)
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51-55: LGTM! Verify usage of AsyncAlgorithms in AblyChatTests.Adding the
AsyncAlgorithmsdependency to theAblyChatTeststarget is a good practice. It allows for comprehensive testing of the Room Lifecycle Monitoring implementation that may rely on this library.To ensure the new dependency is being utilized effectively in tests, please run the following script:
#!/bin/bash # Description: Verify the usage of AsyncAlgorithms in the AblyChatTests target # Test: Search for import statements of AsyncAlgorithms in the test files echo "Searching for AsyncAlgorithms import statements in test files:" rg --type swift 'import AsyncAlgorithms' Tests/AblyChatTests # Test: Search for usage of AsyncAlgorithms types or functions in the test files echo "Searching for AsyncAlgorithms usage in test files:" rg --type swift 'AsyncAlgorithms\.' Tests/AblyChatTests
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63-67: Verify the necessity of AsyncAlgorithms in BuildTool target.The addition of the
AsyncAlgorithmsdependency to theBuildTooltarget is unexpected. Build tools typically don't require asynchronous algorithms. Could you please clarify the reason for this addition?To help understand the usage, if any, please run the following script:
#!/bin/bash # Description: Verify the usage of AsyncAlgorithms in the BuildTool target # Test: Search for import statements of AsyncAlgorithms in the BuildTool source files echo "Searching for AsyncAlgorithms import statements in BuildTool source files:" rg --type swift 'import AsyncAlgorithms' Sources/BuildTool # Test: Search for usage of AsyncAlgorithms types or functions in the BuildTool source files echo "Searching for AsyncAlgorithms usage in BuildTool source files:" rg --type swift 'AsyncAlgorithms\.' Sources/BuildToolIf there's no usage found, consider removing this dependency from the
BuildTooltarget to keep the dependencies minimal and relevant.
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1-78: Overall alignment with PR objectivesThe changes to the
Package.swiftfile partially align with the PR objectives for implementing Room Lifecycle Monitoring:
- Adding
AsyncAlgorithmsto theAblyChattarget is appropriate and likely necessary for the implementation.- Including
AsyncAlgorithmsin theAblyChatTeststarget allows for comprehensive testing of the new functionality.- The addition of
AsyncAlgorithmsto theBuildTooltarget is unclear and may not directly relate to the Room Lifecycle Monitoring implementation.To ensure that these changes are indeed related to the Room Lifecycle Monitoring implementation, please run the following script:
#!/bin/bash # Description: Verify the usage of AsyncAlgorithms in relation to Room Lifecycle Monitoring # Test: Search for Room Lifecycle Monitoring related code that uses AsyncAlgorithms echo "Searching for Room Lifecycle Monitoring code using AsyncAlgorithms:" rg --type swift -e 'class.*RoomLifecycle' -e 'struct.*RoomLifecycle' -e 'func.*RoomLifecycle' -C 5 | rg 'AsyncAlgorithms' # Test: Search for TODO comments related to Room Lifecycle Monitoring echo "Searching for TODO comments related to Room Lifecycle Monitoring:" rg --type swift '#.*TODO.*Room Lifecycle'This will help verify that the
AsyncAlgorithmsdependency is being used in the context of Room Lifecycle Monitoring and identify any remaining tasks.
42-45: LGTM! Verify usage of AsyncAlgorithms in AblyChat target.The addition of the
AsyncAlgorithmsdependency to theAblyChattarget is correct and aligns with the PR objectives for implementing Room Lifecycle Monitoring.To ensure the new dependency is being utilized effectively, please run the following script:
✅ Verification successful
No instances of
AsyncAlgorithmswere found in theAblyChattarget.To ensure the dependency is utilized correctly, please run the following scripts:
[/run_scripts]
AsyncAlgorithms dependency is correctly integrated and utilized in the AblyChat target.
RoomLifecycleManager.swiftimports and usesAsyncAlgorithms.- Test files
SubscriptionTests.swiftandMessageSubscriptionTests.swiftalso importAsyncAlgorithmsfor testing purposes.🏁 Scripts executed
The following scripts were executed for the analysis:
Script:
#!/bin/bash # Description: Verify the usage of AsyncAlgorithms in the AblyChat target # Test: Search for import statements of AsyncAlgorithms in the AblyChat source files echo "Searching for AsyncAlgorithms import statements in AblyChat source files:" rg --type swift 'import AsyncAlgorithms' Sources/AblyChat # Test: Search for usage of AsyncAlgorithms types or functions in the AblyChat source files echo "Searching for AsyncAlgorithms usage in AblyChat source files:" rg --type swift 'AsyncAlgorithms\.' Sources/AblyChatLength of output: 451
Script:
#!/bin/bash # Description: Comprehensive search for AsyncAlgorithms usage in the entire codebase # Test: Search for any occurrence of AsyncAlgorithms in all Swift files echo "Searching for any occurrence of AsyncAlgorithms in all Swift files:" rg --type swift 'AsyncAlgorithms' # Test: Verify that AsyncAlgorithms is listed in the Package.swift dependencies echo "Verifying AsyncAlgorithms is listed in Package.swift dependencies:" rg 'swift-async-algorithms' Package.swiftLength of output: 978
Tests/AblyChatTests/Mocks/MockRoomLifecycleContributorChannel.swift (1)
1-1: Verify necessity of@preconcurrencyimportPlease confirm whether the
@preconcurrencyattribute is still required for importingAbly. If theAblylibrary has been updated to be concurrency-safe, you might be able to remove this attribute.Sources/AblyChat/RoomLifecycleManager.swift (3)
133-139: Ensure@Sendableclosure adheres to concurrency requirementsYou are using a
@Sendableclosure that capturesselfweakly:group.addTask { @Sendable [weak self] in for await stateChange in subscription { await self?.didReceiveStateChange(stateChange, forContributorAt: index) } }Capturing
selfin a@Sendableclosure can lead to concurrency issues ifselfis notSendable. Additionally, the comment indicates uncertainty about the use of@Sendable.Please verify that
selfconforms toSendableand that it's safe to access within a@Sendableclosure. Ifselfis an actor (which isSendableby default), you can safely capture it without marking the closure as@Sendable. Alternatively, consider restructuring the code to avoid capturingselfin a@Sendableclosure.
44-45: ClarifypendingDiscontinuityEventsusage or limit its sizeThe
ContributorAnnotationstruct contains an arraypendingDiscontinuityEventsand includes a TODO comment:// TODO: Not clear whether there can be multiple or just one (asked in https://github.com/ably/specification/pull/200/files#r1781927850) var pendingDiscontinuityEvents: [ARTErrorInfo] = []If only one discontinuity event is expected per contributor, consider using a single optional
ARTErrorInfoinstead of an array to simplify the code. If multiple events are possible, ensure there is a mechanism to prevent unbounded growth of this array, such as limiting its size or periodically clearing old events.
12-14:⚠️ Potential issueFix method signatures for
attach()anddetach()The method signatures
func attach() async throws(ARTErrorInfo)andfunc detach() async throws(ARTErrorInfo)are incorrect. In Swift, you cannot specify the type of error thrown in the function signature. Thethrowskeyword indicates that a function can throw an error, but it doesn't accept parameters. If these methods are intended to throw errors, they should be declared asfunc attach() async throwsandfunc detach() async throws. If they are also supposed to return anARTErrorInfo, the return type should be specified after->.Apply this diff to correct the method signatures:
-func attach() async throws(ARTErrorInfo) -func detach() async throws(ARTErrorInfo) +func attach() async throws +func detach() async throwsLikely invalid or redundant comment.
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Actionable comments posted: 1
🧹 Outside diff range and nitpick comments (7)
Tests/AblyChatTests/RoomLifecycleManagerTests.swift (4)
180-212: LGTM: Comprehensive new test for discontinuity eventsThis new test case,
attach_uponSuccess_emitsPendingDiscontinuityEvents, is a valuable addition to the test suite. It thoroughly checks the behavior of emitting pending discontinuity events upon successful attachment. The test structure is clear, and it makes good use of Swift's concurrency features and modern testing syntax.The TODO comment on line 200 references a GitHub issue for clarification on the intended behavior. This is a good practice for tracking uncertainties in the specification.
Consider updating the test once the behavior is clarified in the referenced GitHub issue (https://github.com/ably/specification/pull/200/files#r1781917231).
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449-464: LGTM: Well-updated transition test with pending enhancementThe
detach_transitionsToDetachingtest has been successfully updated to leverage Swift's concurrency model. The use ofasync letfor the status change subscription is efficient. The assertions using#expectand#requireprovide robust checks for the expected transition to the detaching state.The TODO comment on line 446 references a GitHub issue (#48) for implementing the part related to "transient disconnect timeouts". This is a good practice for tracking pending enhancements.
Consider implementing the transient disconnect timeouts functionality and updating this test accordingly once the referenced issue is addressed.
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507-538: LGTM: Well-updated test for partial failure scenarioThe
detach_whenAContributorFailsToDetachAndEntersFailed_detachesRemainingContributorsAndTransitionsToFailedtest has been successfully updated to leverage Swift's concurrency model. The use ofasync letfor the status change subscription is efficient. The assertions using#expectand#requireprovide robust checks for the expected behavior in this partial failure scenario.The TODO comment on line 530 references an outstanding question in the specification (https://github.com/ably/specification/pull/200/files#r1763792152) regarding whether to use
errorReasonor the contributordetachthrown error. This is a good practice for tracking uncertainties in the specification.Once the specification question is resolved, update the test to reflect the clarified behavior.
725-968: LGTM: Excellent addition of comprehensive testsThe new tests added from line 725 onwards significantly enhance the test suite for the RoomLifecycleManager. These tests cover various scenarios related to contributor updates and state changes, including:
- Handling of resumed flags in contributor updates
- Recording of pending discontinuity events
- Emitting discontinuity events
- Handling of contributor state changes (e.g., to ATTACHED, FAILED, SUSPENDED)
The tests make good use of Swift's concurrency features and modern testing syntax. They provide thorough coverage of the specified behaviors and edge cases.
There are a few TODO comments (e.g., lines 836, 841, 941) that reference GitHub issues for pending work or clarifications. This is a good practice for tracking areas that need further attention.
As the TODO items are addressed and the referenced GitHub issues are resolved, remember to update the corresponding tests to reflect any clarified behaviors or new implementations.
Sources/AblyChat/RoomLifecycleManager.swift (3)
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293-303: Attach contributors concurrently to improve performanceIn the
performAttachOperationmethod, contributors are being attached sequentially, which might increase the total attach time:for contributor in contributors { do { logger.log(message: "Attaching contributor \(contributor)", level: .info) try await contributor.channel.attach() } catch let contributorAttachError { // Error handling code... } }Attaching contributors concurrently can improve performance, especially with multiple contributors. You can use
withThrowingTaskGroup:try await withThrowingTaskGroup(of: Void.self) { group in for contributor in contributors { group.addTask { logger.log(message: "Attaching contributor \(contributor)", level: .info) try await contributor.channel.attach() } } try await group.waitForAll() }This change initiates all attach operations simultaneously, potentially reducing the total time to attach all contributors.
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372-385: Detach non-failed contributors concurrentlyIn the
detachNonFailedContributorsmethod, contributors are detached sequentially within a loop:for contributor in contributors where await (contributor.channel.state) != .failed { // Retry loop while true { do { logger.log(message: "Detaching non-failed contributor \(contributor)", level: .info) try await contributor.channel.detach() break } catch { // Error handling and loop repeats } } }Detaching contributors concurrently can enhance efficiency. You can modify the code using
withTaskGroup:await withTaskGroup(of: Void.self) { group in for contributor in contributors { let state = await contributor.channel.state if state != .failed { group.addTask { // Retry loop while true { do { logger.log(message: "Detaching non-failed contributor \(contributor)", level: .info) try await contributor.channel.detach() break } catch { // Error handling and loop repeats } } } } } await group.waitForAll() }This approach detaches all non-failed contributors in parallel, which can reduce the overall detachment time.
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329-353: Detach contributors concurrently inperformDetachOperationIn the
performDetachOperation, contributors are detached sequentially:var firstDetachError: Error? for contributor in contributors { logger.log(message: "Detaching contributor \(contributor)", level: .info) do { try await contributor.channel.detach() } catch { // Error handling code... } }To improve efficiency, consider detaching contributors concurrently:
var firstDetachError: Error? try await withThrowingTaskGroup(of: Void.self) { group in for contributor in contributors { group.addTask { logger.log(message: "Detaching contributor \(contributor)", level: .info) do { try await contributor.channel.detach() } catch { // Error handling code throw error } } } do { try await group.waitForAll() } catch { if firstDetachError == nil { firstDetachError = error } } } if let firstDetachError { // CHA-RL2f throw firstDetachError }This modification detaches all contributors simultaneously, potentially reducing the total time required for the detachment process.
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📒 Files selected for processing (5)
- Package.swift (1 hunks)
- Sources/AblyChat/RoomLifecycleManager.swift (6 hunks)
- Tests/AblyChatTests/Mocks/MockRoomLifecycleContributor.swift (1 hunks)
- Tests/AblyChatTests/Mocks/MockRoomLifecycleContributorChannel.swift (3 hunks)
- Tests/AblyChatTests/RoomLifecycleManagerTests.swift (29 hunks)
🚧 Files skipped from review as they are similar to previous changes (3)
- Package.swift
- Tests/AblyChatTests/Mocks/MockRoomLifecycleContributor.swift
- Tests/AblyChatTests/Mocks/MockRoomLifecycleContributorChannel.swift
🧰 Additional context used
📓 Learnings (2)
Sources/AblyChat/RoomLifecycleManager.swift (10)
Learnt from: lawrence-forooghian PR: ably-labs/ably-chat-swift#67 File: Sources/AblyChat/RoomLifecycleManager.swift:225-230 Timestamp: 2024-10-01T19:44:59.950Z Learning: In the `ably-chat-swift` project, `swift-async-algorithms` provides the `async` property on collections, allowing for asynchronous operations like `contributors.async`.Learnt from: lawrence-forooghian PR: ably-labs/ably-chat-swift#67 File: Sources/AblyChat/RoomLifecycleManager.swift:217-220 Timestamp: 2024-10-01T19:44:34.032Z Learning: In `RoomLifecycleManager`, handling of missing `stateChange.reason` when `stateChange.resumed` is `false` is being tracked in issue #74. Future reviews should be aware of this planned work.Learnt from: lawrence-forooghian PR: ably-labs/ably-chat-swift#67 File: Sources/AblyChat/RoomLifecycleManager.swift:235-237 Timestamp: 2024-10-01T19:47:18.144Z Learning: When code includes a TODO comment referencing an issue, it indicates that the issue is being tracked, and no further action is needed.Learnt from: lawrence-forooghian PR: ably-labs/ably-chat-swift#67 File: Tests/AblyChatTests/RoomLifecycleManagerTests.swift:941-941 Timestamp: 2024-10-01T19:46:16.467Z Learning: When a TODO comment references an existing GitHub issue, it's acceptable to leave it in the code without requesting its removal.Learnt from: lawrence-forooghian PR: ably-labs/ably-chat-swift#67 File: Sources/AblyChat/RoomLifecycleManager.swift:255-257 Timestamp: 2024-10-01T19:44:06.841Z Learning: In `RoomLifecycleManager`, handling of missing `reason` in `SUSPENDED` state will be addressed in issue #74.Learnt from: lawrence-forooghian PR: ably-labs/ably-chat-swift#54 File: Sources/AblyChat/RoomLifecycleManager.swift:0-0 Timestamp: 2024-09-18T18:34:37.252Z Learning: In `RoomLifecycleManager`, handling of unexpected contributor states after attach failure will be addressed in issue #49.Learnt from: lawrence-forooghian PR: ably-labs/ably-chat-swift#54 File: Sources/AblyChat/RoomLifecycleManager.swift:262-262 Timestamp: 2024-09-18T18:29:03.379Z Learning: When a TODO comment references an associated GitHub issue, recognize that the issue is being tracked and avoid suggesting fixes that are already planned.Learnt from: lawrence-forooghian PR: ably-labs/ably-chat-swift#67 File: Tests/AblyChatTests/RoomLifecycleManagerTests.swift:836-836 Timestamp: 2024-10-01T19:46:04.461Z Learning: Before suggesting the removal of TODO comments, check if they reference existing GitHub issues that track the pending work.Learnt from: lawrence-forooghian PR: ably-labs/ably-chat-swift#9 File: Sources/AblyChat/RoomStatus.swift:3-33 Timestamp: 2024-08-28T13:01:11.701Z Learning: When reviewing code, avoid commenting on TODOs that already have a linked GitHub issue, as per the user's preference.Learnt from: lawrence-forooghian PR: ably-labs/ably-chat-swift#67 File: Tests/AblyChatTests/Mocks/MockRoomLifecycleContributorChannel.swift:98-102 Timestamp: 2024-10-01T19:43:27.683Z Learning: The cleanup of old subscriptions in `MockRoomLifecycleContributorChannel` is acknowledged with a TODO comment and is tracked in issue #36.Tests/AblyChatTests/RoomLifecycleManagerTests.swift (6)
Learnt from: lawrence-forooghian PR: ably-labs/ably-chat-swift#54 File: Sources/AblyChat/RoomLifecycleManager.swift:0-0 Timestamp: 2024-09-18T18:34:37.252Z Learning: In `RoomLifecycleManager`, handling of unexpected contributor states after attach failure will be addressed in issue #49.Learnt from: lawrence-forooghian PR: ably-labs/ably-chat-swift#54 File: Tests/AblyChatTests/RoomLifecycleManagerTests.swift:627-631 Timestamp: 2024-10-01T12:55:21.968Z Learning: The closure `detachImpl` in `RoomLifecycleManagerTests.swift` functions as intended without external state variables to track invocation count.Learnt from: lawrence-forooghian PR: ably-labs/ably-chat-swift#54 File: Tests/AblyChatTests/RoomLifecycleManagerTests.swift:335-335 Timestamp: 2024-09-23T19:56:39.435Z Learning: In Swift Testing, test method names do not need to start with `test`.Learnt from: lawrence-forooghian PR: ably-labs/ably-chat-swift#54 File: Tests/AblyChatTests/RoomLifecycleManagerTests.swift:499-504 Timestamp: 2024-10-01T12:47:28.179Z Learning: In test closures, parameters like `callCount` may be used to track invocation counts correctly across invocations.Learnt from: lawrence-forooghian PR: ably-labs/ably-chat-swift#67 File: Tests/AblyChatTests/RoomLifecycleManagerTests.swift:941-941 Timestamp: 2024-10-01T19:46:16.467Z Learning: When a TODO comment references an existing GitHub issue, it's acceptable to leave it in the code without requesting its removal.Learnt from: lawrence-forooghian PR: ably-labs/ably-chat-swift#67 File: Tests/AblyChatTests/RoomLifecycleManagerTests.swift:836-836 Timestamp: 2024-10-01T19:46:04.461Z Learning: Before suggesting the removal of TODO comments, check if they reference existing GitHub issues that track the pending work.
🔇 Additional comments (17)
Tests/AblyChatTests/RoomLifecycleManagerTests.swift (17)
32-36: LGTM: Enhanced test flexibilityThe additions to the
createManagerfunction provide more control over the test scenarios, allowing for better coverage of different states. The explicit async return type is also a good practice in Swift concurrency.
52-52: LGTM: Simplified return typeThe change to return
MockRoomLifecycleContributordirectly improves type clarity and makes the function's purpose more evident.
63-69: LGTM: Useful async helper functionThe
waitForManagerfunction is a valuable addition that facilitates testing of asynchronous behavior. It provides a clean way to ensure that the manager has processed a state change before proceeding with assertions in tests.
77-79: LGTM: Updated to async testingThe test has been successfully updated to use async/await syntax, which is appropriate for testing asynchronous behavior. The use of
#expectfor assertions is also a good modernization of the test syntax.
84-86: LGTM: Consistent async test updateThe
error_startsAsNiltest has been updated in line with the previous test, using async/await syntax and the#expectassertion. This maintains consistency across the test suite.
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96-103: LGTM: Comprehensive test updateThe
attach_whenAlreadyAttachedtest has been successfully updated to use async/await syntax. ThecreateManagercall now includes the new parameter for setting the initial state, which enhances test specificity. The use of#expectfor assertions maintains consistency with other updated tests.
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109-118: LGTM: Well-updated error condition testThe
attach_whenReleasingtest has been properly updated to use async/await syntax. ThecreateManagercall correctly uses the new parameter to set up the initial state. The use of#expectwith a throws clause is an excellent way to test for the expected error condition.
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124-133: LGTM: Consistent test updateThe
attach_whenReleasedtest has been updated in line with the previous tests. It now uses async/await syntax, the updatedcreateManagercall, and the#expectassertion with a throws clause. This maintains consistency and modernizes the test implementation.
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141-155: LGTM: Excellent use of Swift concurrencyThe
attach_transitionsToAttachingtest has been updated to make full use of Swift's concurrency features. The use ofasync letfor concurrent operations is particularly noteworthy, allowing for efficient testing of asynchronous behavior. The updated assertions using#expectand#requireprovide clear and robust checks. This is a well-crafted test that effectively verifies the transition to the attaching state.
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163-179: LGTM: Comprehensive async test updateThe test has been successfully updated to leverage Swift's concurrency model. The use of
async letfor the status change subscription is efficient. The assertions using#expectand#requireprovide robust checks for the expected behavior. This update maintains the test's effectiveness while modernizing its implementation.
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229-253: LGTM: Well-updated test for failure scenarioThe
attach_whenContributorFailsToAttachAndEntersSuspended_transitionsToSuspendedtest has been successfully updated to use Swift's concurrency features. The use ofasync letfor the status change and room attach result is efficient. The assertions using#expectand#requireprovide robust checks for the expected behavior in this failure scenario. The test effectively verifies the transition to the suspended state and the propagation of the error.
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280-323: LGTM: Comprehensive update for failure scenario testThe
attach_whenContributorFailsToAttachAndEntersFailed_transitionsToFailedtest has been successfully updated to leverage Swift's concurrency model. The use ofasync letfor the status change subscription is efficient. The assertions using#expectand#requireprovide robust checks for the expected behavior in this failure scenario. The test effectively verifies the transition to the failed state and the propagation of the error. This update maintains the test's effectiveness while modernizing its implementation.
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331-343: LGTM: Well-updated test for detach behaviorThe
attach_whenAttachPutsChannelIntoFailedState_detachesAllNonFailedChannelstest has been successfully updated to use async/await syntax. ThecreateManagercall correctly uses the new parameter structure. The assertions using#expectprovide clear checks for the expected detach behavior on different contributors. This update maintains the test's effectiveness while aligning it with the modern Swift concurrency model.
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373-380: LGTM: Properly updated retry behavior testThe
attach_whenChannelDetachTriggered_ifADetachFailsItIsRetriedUntilSuccesstest has been successfully updated to use async/await syntax. ThecreateManagercall correctly uses the new parameter structure. The assertion using#expectprovides a clear check for the expected retry behavior. This update aligns the test with the modern Swift concurrency model while maintaining its effectiveness in verifying the retry logic.
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389-396: LGTM: Consistent update for detach testThe
detach_whenAlreadyDetachedtest has been properly updated to use async/await syntax. ThecreateManagercall correctly uses the new parameter structure to set up the initial detached state. The assertion using#expectprovides a clear check for the expected behavior. This update aligns the test with the modern Swift concurrency model while maintaining its effectiveness in verifying the no-op behavior when already detached.
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402-439: LGTM: Consistent updates for error condition testsThe
detach_whenReleasing,detach_whenReleased, anddetach_whenFailedtests have all been successfully updated to use async/await syntax. ThecreateManagercalls correctly use the new parameter structure to set up the initial states. The assertions using#expectwith throws clauses provide clear checks for the expected error conditions. These updates align the tests with the modern Swift concurrency model while maintaining their effectiveness in verifying the appropriate error handling in various states.
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470-485: LGTM: Comprehensive update for successful detach scenarioThe
detach_detachesAllContributors_andWhenTheyAllDetachSuccessfully_transitionsToDetachedtest has been successfully updated to leverage Swift's concurrency model. The use ofasync letfor the status change subscription is efficient. The assertions using#expectand#requireprovide robust checks for the expected behavior, verifying that all contributors are detached and the room transitions to the detached state. This update maintains the test's effectiveness while modernizing its implementation.
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🧹 Outside diff range and nitpick comments (3)
Sources/AblyChat/RoomLifecycleManager.swift (2)
43-93: LGTM: Improved thread-safety and state managementThe transition to an actor model for
RoomLifecycleManagerand the introduction ofContributorAnnotationandContributorAnnotationsstructures significantly enhance thread-safety and state management. The asynchronous initialization process is a good approach to ensure proper setup.Consider adding a brief comment explaining the purpose of the
hasOperationInProgressproperty, as its usage might not be immediately clear to other developers.
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95-174: LGTM: Comprehensive initialization processThe initialization methods, including the test-only variants, provide a robust setup for the
RoomLifecycleManager. The asynchronous setup of state change subscriptions for all contributors ensures that the manager is ready to handle state changes as soon as it's initialized.Consider adding a comment explaining the rationale behind using
@Sendablein the closure on line 162. This will help other developers understand the concurrency implications.Tests/AblyChatTests/RoomLifecycleManagerTests.swift (1)
180-212: Well-implemented test for CHA-RL1g2 specificationThe new
attach_uponSuccess_emitsPendingDiscontinuityEventstest case is a valuable addition that covers the specified behavior in CHA-RL1g2. It correctly uses async/await syntax and the enhancedcreateManagerfunction.The test comprehensively checks both the emission of discontinuity events and the clearing of pending events. This ensures that the
RoomLifecycleManagercorrectly handles pending discontinuity events upon successful attachment.Consider wrapping the
zipoperation in aguardstatement to handle potential mismatched array lengths more gracefully:- for (emitDiscontinuityArgument, expectedArgument) in zip(emitDiscontinuityArguments, expectedPendingDiscontinuityEvents) { - #expect(emitDiscontinuityArgument === expectedArgument) - } + guard emitDiscontinuityArguments.count == expectedPendingDiscontinuityEvents.count else { + XCTFail("Mismatch in number of emitted and expected discontinuity events") + return + } + for (emitDiscontinuityArgument, expectedArgument) in zip(emitDiscontinuityArguments, expectedPendingDiscontinuityEvents) { + #expect(emitDiscontinuityArgument === expectedArgument) + }This change would provide a more informative failure message if the arrays have different lengths.
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📒 Files selected for processing (5)
- Package.swift (1 hunks)
- Sources/AblyChat/RoomLifecycleManager.swift (6 hunks)
- Tests/AblyChatTests/Mocks/MockRoomLifecycleContributor.swift (1 hunks)
- Tests/AblyChatTests/Mocks/MockRoomLifecycleContributorChannel.swift (3 hunks)
- Tests/AblyChatTests/RoomLifecycleManagerTests.swift (29 hunks)
🚧 Files skipped from review as they are similar to previous changes (3)
- Package.swift
- Tests/AblyChatTests/Mocks/MockRoomLifecycleContributor.swift
- Tests/AblyChatTests/Mocks/MockRoomLifecycleContributorChannel.swift
🧰 Additional context used
📓 Learnings (2)
Sources/AblyChat/RoomLifecycleManager.swift (10)
Learnt from: lawrence-forooghian PR: ably-labs/ably-chat-swift#67 File: Sources/AblyChat/RoomLifecycleManager.swift:235-237 Timestamp: 2024-10-01T19:47:18.144Z Learning: When code includes a TODO comment referencing an issue, it indicates that the issue is being tracked, and no further action is needed.Learnt from: lawrence-forooghian PR: ably-labs/ably-chat-swift#54 File: Sources/AblyChat/RoomLifecycleManager.swift:262-262 Timestamp: 2024-09-18T18:29:03.379Z Learning: When a TODO comment references an associated GitHub issue, recognize that the issue is being tracked and avoid suggesting fixes that are already planned.Learnt from: lawrence-forooghian PR: ably-labs/ably-chat-swift#67 File: Tests/AblyChatTests/RoomLifecycleManagerTests.swift:941-941 Timestamp: 2024-10-01T19:46:16.467Z Learning: When a TODO comment references an existing GitHub issue, it's acceptable to leave it in the code without requesting its removal.Learnt from: lawrence-forooghian PR: ably-labs/ably-chat-swift#9 File: Sources/AblyChat/RoomStatus.swift:3-33 Timestamp: 2024-08-28T13:01:11.701Z Learning: When reviewing code, avoid commenting on TODOs that already have a linked GitHub issue, as per the user's preference.Learnt from: lawrence-forooghian PR: ably-labs/ably-chat-swift#67 File: Tests/AblyChatTests/RoomLifecycleManagerTests.swift:836-836 Timestamp: 2024-10-01T19:46:04.461Z Learning: Before suggesting the removal of TODO comments, check if they reference existing GitHub issues that track the pending work.Learnt from: lawrence-forooghian PR: ably-labs/ably-chat-swift#67 File: Sources/AblyChat/RoomLifecycleManager.swift:217-220 Timestamp: 2024-10-01T19:44:34.032Z Learning: In `RoomLifecycleManager`, handling of missing `stateChange.reason` when `stateChange.resumed` is `false` is being tracked in issue #74. Future reviews should be aware of this planned work.Learnt from: lawrence-forooghian PR: ably-labs/ably-chat-swift#54 File: Sources/AblyChat/RoomLifecycleManager.swift:0-0 Timestamp: 2024-09-18T18:34:37.252Z Learning: In `RoomLifecycleManager`, handling of unexpected contributor states after attach failure will be addressed in issue #49.Learnt from: lawrence-forooghian PR: ably-labs/ably-chat-swift#67 File: Tests/AblyChatTests/Mocks/MockRoomLifecycleContributorChannel.swift:98-102 Timestamp: 2024-10-01T19:43:27.683Z Learning: The cleanup of old subscriptions in `MockRoomLifecycleContributorChannel` is acknowledged with a TODO comment and is tracked in issue #36.Learnt from: lawrence-forooghian PR: ably-labs/ably-chat-swift#67 File: Sources/AblyChat/RoomLifecycleManager.swift:255-257 Timestamp: 2024-10-01T19:44:06.841Z Learning: In `RoomLifecycleManager`, handling of missing `reason` in `SUSPENDED` state will be addressed in issue #74.Learnt from: lawrence-forooghian PR: ably-labs/ably-chat-swift#67 File: Sources/AblyChat/RoomLifecycleManager.swift:225-230 Timestamp: 2024-10-01T19:44:59.950Z Learning: In the `ably-chat-swift` project, `swift-async-algorithms` provides the `async` property on collections, allowing for asynchronous operations like `contributors.async`.Tests/AblyChatTests/RoomLifecycleManagerTests.swift (13)
Learnt from: lawrence-forooghian PR: ably-labs/ably-chat-swift#67 File: Tests/AblyChatTests/RoomLifecycleManagerTests.swift:941-941 Timestamp: 2024-10-01T19:46:16.467Z Learning: When a TODO comment references an existing GitHub issue, it's acceptable to leave it in the code without requesting its removal.Learnt from: lawrence-forooghian PR: ably-labs/ably-chat-swift#67 File: Tests/AblyChatTests/RoomLifecycleManagerTests.swift:836-836 Timestamp: 2024-10-01T19:46:04.461Z Learning: Before suggesting the removal of TODO comments, check if they reference existing GitHub issues that track the pending work.Learnt from: lawrence-forooghian PR: ably-labs/ably-chat-swift#54 File: Sources/AblyChat/RoomLifecycleManager.swift:262-262 Timestamp: 2024-09-18T18:29:03.379Z Learning: When a TODO comment references an associated GitHub issue, recognize that the issue is being tracked and avoid suggesting fixes that are already planned.Learnt from: lawrence-forooghian PR: ably-labs/ably-chat-swift#67 File: Sources/AblyChat/RoomLifecycleManager.swift:235-237 Timestamp: 2024-10-01T19:47:18.144Z Learning: When code includes a TODO comment referencing an issue, it indicates that the issue is being tracked, and no further action is needed.Learnt from: lawrence-forooghian PR: ably-labs/ably-chat-swift#9 File: Sources/AblyChat/RoomStatus.swift:3-33 Timestamp: 2024-08-28T13:01:11.701Z Learning: When reviewing code, avoid commenting on TODOs that already have a linked GitHub issue, as per the user's preference.Learnt from: lawrence-forooghian PR: ably-labs/ably-chat-swift#9 File: Sources/AblyChat/Metadata.swift:1-2 Timestamp: 2024-08-28T12:07:31.704Z Learning: When reviewing code, avoid commenting on TODOs that already have a linked GitHub issue, as per the user's preference.Learnt from: lawrence-forooghian PR: ably-labs/ably-chat-swift#54 File: Sources/AblyChat/RoomLifecycleManager.swift:0-0 Timestamp: 2024-09-18T18:34:37.252Z Learning: In `RoomLifecycleManager`, handling of unexpected contributor states after attach failure will be addressed in issue #49.Learnt from: lawrence-forooghian PR: ably-labs/ably-chat-swift#67 File: Tests/AblyChatTests/Mocks/MockRoomLifecycleContributorChannel.swift:98-102 Timestamp: 2024-10-01T19:43:27.683Z Learning: The cleanup of old subscriptions in `MockRoomLifecycleContributorChannel` is acknowledged with a TODO comment and is tracked in issue #36.Learnt from: lawrence-forooghian PR: ably-labs/ably-chat-swift#67 File: Sources/AblyChat/RoomLifecycleManager.swift:217-220 Timestamp: 2024-10-01T19:44:34.032Z Learning: In `RoomLifecycleManager`, handling of missing `stateChange.reason` when `stateChange.resumed` is `false` is being tracked in issue #74. Future reviews should be aware of this planned work.Learnt from: lawrence-forooghian PR: ably-labs/ably-chat-swift#67 File: Sources/AblyChat/RoomLifecycleManager.swift:255-257 Timestamp: 2024-10-01T19:44:06.841Z Learning: In `RoomLifecycleManager`, handling of missing `reason` in `SUSPENDED` state will be addressed in issue #74.Learnt from: lawrence-forooghian PR: ably-labs/ably-chat-swift#54 File: Tests/AblyChatTests/RoomLifecycleManagerTests.swift:627-631 Timestamp: 2024-10-01T12:55:21.968Z Learning: The closure `detachImpl` in `RoomLifecycleManagerTests.swift` functions as intended without external state variables to track invocation count.Learnt from: lawrence-forooghian PR: ably-labs/ably-chat-swift#54 File: Tests/AblyChatTests/RoomLifecycleManagerTests.swift:335-335 Timestamp: 2024-09-23T19:56:39.435Z Learning: In Swift Testing, test method names do not need to start with `test`.Learnt from: lawrence-forooghian PR: ably-labs/ably-chat-swift#54 File: Tests/AblyChatTests/RoomLifecycleManagerTests.swift:499-504 Timestamp: 2024-10-01T12:47:28.179Z Learning: In test closures, parameters like `callCount` may be used to track invocation counts correctly across invocations.
🔇 Additional comments (26)
Sources/AblyChat/RoomLifecycleManager.swift (8)
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1-41: LGTM: Improved protocol definitions and async supportThe changes to the
RoomLifecycleContributorChannelprotocol and the addition of theRoomLifecycleContributorprotocol enhance the asynchronous capabilities of the system. The use ofAsyncAlgorithmsand the newsubscribeToStatemethod provide a more robust way to handle state changes.
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176-208: LGTM: Useful debug-only additionsThe debug-only methods and properties, such as
testsOnly_pendingDiscontinuityEventsandtestsOnly_subscribeToHandledContributorStateChanges, provide valuable tools for testing and debugging theRoomLifecycleManager's behavior. These additions will help ensure the correct implementation of the room lifecycle specification.
210-296: LGTM: Comprehensive state change handlingThe
didReceiveStateChangemethod provides a thorough implementation of CHA-RL4b's contributor state change handling. It correctly handles various state changes and updates the manager's state accordingly.The TODO comments referencing GitHub issues #49 and #74 indicate areas that need further attention:
- Handling of state assumptions in a multi-threaded environment (issue Address concurrency-related issues not addressed by feature spec #49)
- Deciding the appropriate action when
stateChange.reasonis nil (issue Decide correct behaviour when ably-cocoa emits a state change without an error when there should be one #74)These issues are being tracked and will be addressed in future updates.
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298-313: LGTM: Clear status managementThe
changeStatusandemitStatusChangemethods provide a clear and concise way to update the manager's status and notify subscribers of changes. The implementation is straightforward and effective.
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315-372: LGTM: Comprehensive ATTACH operation implementationThe
performAttachOperationmethod provides a thorough implementation of CHA-RL1'sATTACHoperation. It correctly handles various initial states, attaches all contributors, and implements proper error handling for different scenarios.Note: There's a TODO comment on line 359 about implementing the "asynchronously with respect to CHA-RL1h4" part of CHA-RL1h5. This is being tracked in issue #50 and should be addressed in a future update.
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374-407: LGTM: Correct implementation of discontinuity events and detachmentThe
emitPendingDiscontinuityEventsanddetachNonFailedContributorsmethods are well-implemented and follow the specification correctly. They handle the emission of pending discontinuity events and the detachment of non-failed contributors as expected.
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409-502: LGTM: Comprehensive DETACH operation implementationThe
performDetachOperationmethod provides a thorough implementation of CHA-RL2's DETACH operation. It correctly handles various initial states, detaches all contributors, and implements proper error handling for different scenarios.Note: There's a TODO comment on line 478 about determining the correct wait time for retrying detachment. This is referenced in a GitHub discussion (ably/specification#200 (comment)) and should be addressed in a future update.
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504-551: LGTM: Comprehensive RELEASE operation implementationThe
performReleaseOperationmethod provides a thorough implementation of CHA-RL3's RELEASE operation. It correctly handles various initial states and releases all contributors as expected.There are two TODO items that need attention in future updates:
- Handling task cancellation (part of the broader issue Decide how our SDK should interact with Swift
Taskcancellation #29)- Determining the correct wait time for retrying detachment (referenced in chat: room lifecycle specification specification#200 (comment))
These issues should be addressed to improve the robustness and correctness of the implementation.
Tests/AblyChatTests/RoomLifecycleManagerTests.swift (18)
32-37: Improved flexibility increateManagerfunctionThe updates to the
createManagerfunction enhance its capabilities for testing various scenarios. The new parameters allow for more precise control over the initial state of the manager, which is crucial for comprehensive testing.
52-52: Simplified return type increateContributorfunctionThe change in return type to
MockRoomLifecycleContributorimproves consistency with the mock objects used in testing and enhances code readability.
63-69: Well-implementedwaitForManagerhelper functionThe new
waitForManagerfunction is a valuable addition to the test suite. It provides a clean abstraction for handling asynchronous state changes in the manager, which will improve the readability and maintainability of the test cases.
77-77: Successfully updatedcurrent_startsAsInitializedtestThe test has been correctly adapted to use async/await syntax, ensuring compatibility with the updated
RoomLifecycleManagerimplementation.
84-84: Successfully updatederror_startsAsNiltestThe test has been correctly adapted to use async/await syntax, maintaining compatibility with the updated
RoomLifecycleManagerimplementation.
96-96: Successfully updatedattach_whenAlreadyAttachedtestThe test has been correctly adapted to use async/await syntax and utilizes the enhanced
createManagerfunction. These changes ensure that the test remains valid and comprehensive with the updatedRoomLifecycleManagerimplementation.
109-109: Successfully updatedattach_whenReleasingtestThe test has been correctly adapted to use async/await syntax and utilizes the enhanced
createManagerfunction. These changes ensure that the test remains valid with the updatedRoomLifecycleManagerimplementation.
124-124: Successfully updatedattach_whenReleasedtestThe test has been correctly adapted to use async/await syntax and utilizes the enhanced
createManagerfunction. These changes ensure that the test remains valid with the updatedRoomLifecycleManagerimplementation.
141-141: Successfully updatedattach_transitionsToAttachingtest with good concurrency practicesThe test has been correctly adapted to use async/await syntax and utilizes the enhanced
createManagerfunction. The use ofasync letfor concurrent operations is a good practice for testing asynchronous behavior, ensuring that the test accurately captures the state transitions.
163-163: Successfully updatedattach_attachesAllContributors_andWhenTheyAllAttachSuccessfully_transitionsToAttachedtestThe test has been correctly adapted to use async/await syntax and utilizes the enhanced
createManagerfunction. The use ofasync letfor concurrent operations ensures that the test accurately captures the behavior of attaching multiple contributors simultaneously.
229-229: Successfully updatedattach_whenContributorFailsToAttachAndEntersSuspended_transitionsToSuspendedtestThe test has been correctly adapted to use async/await syntax and utilizes the enhanced
createManagerfunction. The use ofasync letfor concurrent operations ensures that the test accurately captures the behavior of the manager when a contributor fails to attach and enters a suspended state.
280-280: Successfully updatedattach_whenContributorFailsToAttachAndEntersFailed_transitionsToFailedtestThe test has been correctly adapted to use async/await syntax and utilizes the enhanced
createManagerfunction. The use ofasync letfor concurrent operations ensures that the test accurately captures the behavior of the manager when a contributor fails to attach and enters a failed state.
331-331: Successfully updatedattach_whenAttachPutsChannelIntoFailedState_detachesAllNonFailedChannelstestThe test has been correctly adapted to use async/await syntax and utilizes the enhanced
createManagerfunction. These changes ensure that the test remains valid and continues to verify the correct behavior of detaching non-failed channels when a channel enters a failed state during attachment.
373-373: Successfully updatedattach_whenChannelDetachTriggered_ifADetachFailsItIsRetriedUntilSuccesstestThe test has been correctly adapted to use async/await syntax and utilizes the enhanced
createManagerfunction. These changes ensure that the test remains valid and continues to verify the retry behavior for failed detach operations during the attachment process.
389-389: Successfully updateddetach_whenAlreadyDetachedtestThe test has been correctly adapted to use async/await syntax and utilizes the enhanced
createManagerfunction. These changes ensure that the test remains valid and continues to verify the correct behavior when attempting to detach an already detached room.
402-402: Successfully updateddetach_whenReleasingtestThe test has been correctly adapted to use async/await syntax and utilizes the enhanced
createManagerfunction. These changes ensure that the test remains valid and continues to verify the correct error handling when attempting to detach a releasing room.
417-417: Successfully updateddetach_whenReleasedtestThe test has been correctly adapted to use async/await syntax and utilizes the enhanced
createManagerfunction. These changes ensure that the test remains valid and continues to verify the correct error handling when attempting to detach a released room.
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1-968: Comprehensive update to RoomLifecycleManagerTestsThe changes to
RoomLifecycleManagerTests.swiftrepresent a significant improvement in the test suite's capabilities:
- Transition to async/await: The entire file has been updated to use modern Swift concurrency patterns, improving readability and maintainability.
- Enhanced test scenarios: New test cases have been added to cover additional scenarios, particularly around handling contributor events and state changes.
- Improved flexibility: The
createManagerfunction now accepts more parameters, allowing for more precise test setups.- Better concurrency testing: The use of
async letin many tests ensures that asynchronous behaviors are accurately captured and verified.These changes collectively enhance the robustness of the test suite and its ability to verify the correct behavior of the
RoomLifecycleManagerunder various conditions.
Resolves #53. See commit messages for more details.
Summary by CodeRabbit
New Features
AsyncAlgorithmsto enhance asynchronous capabilities across multiple components.Bug Fixes
Tests