[ECO-5127] Implement CHA-RL9 #144
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WalkthroughThe changes in this pull request introduce a new error case, Changes
Assessment against linked issues
Possibly related PRs
Suggested reviewers
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Actionable comments posted: 1
🧹 Outside diff range and nitpick comments (9)
Sources/AblyChat/RoomStatus.swift (3)
Line range hint
3-3: Consider addressing or providing context for the TODO commentThe TODO comment suggests renaming but lacks context about the motivation or the intended new name. This could lead to technical debt.
Would you like me to help track this by creating a GitHub issue for the renaming task?
15-31: Add documentation for the error propertyWhile the implementation is correct, adding documentation would help explain:
- The purpose of this property
- When it returns non-nil values
- How it should be used in error handling flows
Consider adding documentation like:
+ /// Returns the error associated with the current room status, if any. + /// - Returns: The error information for attaching, suspended, or failed states; nil otherwise. internal var error: ARTErrorInfo? {
Line range hint
44-67: Consider modernizing the boolean helper propertiesThe helper properties could be simplified using more modern Swift syntax while maintaining the same functionality.
Consider this more concise syntax:
public var isAttaching: Bool { - if case .attaching = self { - true - } else { - false - } + case .attaching = self }This pattern could be applied to
isSuspendedandisFailedas well.Sources/AblyChat/Errors.swift (2)
37-38: LGTM! Consider adding documentation.The new error code follows the established pattern and is appropriately placed in the sequence. Consider adding a documentation comment explaining when this error occurs, similar to other cases in the enum.
public enum ErrorCode: Int { + /// Indicates that a room operation failed because the room was in an invalid state. + /// This typically occurs when attempting presence operations in incorrect room states. case roomInInvalidState = 102_107
183-184: Consider enhancing the error message.While the message is clear, it could be more helpful by including details about what constitutes an invalid state and possible remediation steps.
- "The room operation failed because the room was in an invalid state." + "The room operation failed because the room was in an invalid state. This typically occurs when attempting presence operations while the room is not properly attached or initialized."Tests/AblyChatTests/DefaultRoomLifecycleManagerTests.swift (2)
Line range hint
1879-1918: Enhance test documentation for better clarity.The test method implements multiple specification points but could benefit from clearer documentation:
- Add a brief description of what each specification point (CHA-RL9a, CHA-RL9b) requires
- Document the expected behavior more explicitly in comments
Consider adding this documentation before the test:
/// Tests that waitToBeAbleToPerformPresenceOperations: /// - Waits for room status to change when in ATTACHING state (CHA-RL9a) /// - Succeeds when room transitions to ATTACHED state (CHA-RL9b) /// /// Also partially verifies wait behavior for: /// - Presence enter operation (CHA-PR3d) /// - Presence update operation (CHA-PR10d) /// - Presence leave operation (CHA-PR6c) /// - Typing indicator operation (CHA-T2c)
Line range hint
1919-1965: Improve test documentation and error handling.The test method implements multiple specification points and could benefit from:
Better documentation of specification requirements
More concise error handling
Simplified error cause construction
Add documentation before the test:
/// Tests that waitToBeAbleToPerformPresenceOperations: /// - Waits for room status to change when in ATTACHING state (CHA-RL9a) /// - Fails with roomInInvalidState error when room transitions to non-ATTACHED state (CHA-RL9c) /// /// Also partially verifies wait behavior for: /// - Presence enter operation (CHA-PR3d) /// - Presence update operation (CHA-PR10d) /// - Presence leave operation (CHA-PR6c) /// - Typing indicator operation (CHA-T2c)
- Simplify error handling using Swift's modern error handling:
- var caughtError: Error? - do { - try await waitToBeAbleToPerformPresenceOperationsResult - } catch { - caughtError = error - } + await #expect { + try await waitToBeAbleToPerformPresenceOperationsResult + } throws: { error in + isChatError(error, withCode: .roomInInvalidState, cause: expectedCause) + }
- Consider extracting error cause construction to a helper method:
private func createAttachmentFailedError(feature: RoomFeature, underlyingError: ARTErrorInfo) -> ARTErrorInfo { ARTErrorInfo(chatError: .attachmentFailed(feature: feature, underlyingError: underlyingError)) }Sources/AblyChat/RoomLifecycleManager.swift (2)
1207-1207: Clarify or remove the TODO commentThe comment
// TODO: what if nil?suggests uncertainty aboutsubscriptionbeingnil. SinceonRoomStatusChange(bufferingPolicy:)returns a non-optionalSubscription, consider removing the TODO comment to avoid confusion.
1210-1213: Rename loop variable to avoid shadowingThe loop variable
subscriptionin the#if DEBUGblock shadows the previously definedsubscriptionconstant, which can lead to confusion. Consider renaming the loop variable to prevent shadowing.Apply this diff to rename the loop variable:
#if DEBUG - for subscription in statusChangeWaitEventSubscriptions { - subscription.emit(.init()) + for eventSubscription in statusChangeWaitEventSubscriptions { + eventSubscription.emit(.init()) } #endif
📜 Review details
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📒 Files selected for processing (5)
Sources/AblyChat/Errors.swift(6 hunks)Sources/AblyChat/RoomFeature.swift(1 hunks)Sources/AblyChat/RoomLifecycleManager.swift(1 hunks)Sources/AblyChat/RoomStatus.swift(1 hunks)Tests/AblyChatTests/DefaultRoomLifecycleManagerTests.swift(3 hunks)
🧰 Additional context used
📓 Learnings (2)
Sources/AblyChat/RoomLifecycleManager.swift (1)
Learnt from: lawrence-forooghian
PR: ably-labs/ably-chat-swift#67
File: Sources/AblyChat/RoomLifecycleManager.swift:217-220
Timestamp: 2024-11-12T15:07:31.865Z
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.
Tests/AblyChatTests/DefaultRoomLifecycleManagerTests.swift (2)
Learnt from: lawrence-forooghian
PR: ably-labs/ably-chat-swift#54
File: Tests/AblyChatTests/RoomLifecycleManagerTests.swift:335-335
Timestamp: 2024-11-12T15:07:31.865Z
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:627-631
Timestamp: 2024-11-12T15:07:39.465Z
Learning: The closure `detachImpl` in `RoomLifecycleManagerTests.swift` functions as intended without external state variables to track invocation count.
🔇 Additional comments (8)
Sources/AblyChat/RoomStatus.swift (1)
15-31: Verify alignment with CHA-RL9 specification
The new error property appears to support the presence wait-for-attach functionality requirements, but we should verify its usage in the presence-related operations.
✅ Verification successful
Let me check the actual implementation and usage of this error property in presence-related code.
Let me check one more aspect - the actual implementation of waitToBeAbleToPerformPresenceOperations in the main codebase to see how it uses the RoomStatus error property.
RoomStatus error property correctly implements CHA-RL9 specification
The error property implementation aligns perfectly with the CHA-RL9 specification requirements:
- It's used in
waitToBeAbleToPerformPresenceOperationsto handle presence operation state validation (CHA-RL9a-c) - The error is properly propagated from room states (attaching, suspended, failed) to presence operations
- All presence operations (enter, update, leave, get) correctly wait for room attachment and handle errors
- Implementation matches specification requirements for error handling in different room states
🏁 Scripts executed
The following scripts were executed for the analysis:
Script:
#!/bin/bash
# Search for usage of the new error property in presence-related code
rg -l "waitToBeAbleToPerformPresenceOperations|\.error\s+" --type swift
# Look for any presence-related test cases
rg -l "presence.*test|test.*presence" --type swift
Length of output: 577
Script:
#!/bin/bash
# Check how the error property is used in DefaultPresence.swift
rg -B 5 -A 5 "\.error" Sources/AblyChat/DefaultPresence.swift
# Check the implementation of waitToBeAbleToPerformPresenceOperations
ast-grep --pattern 'func waitToBeAbleToPerformPresenceOperations($$$) {
$$$
}'
# Check presence-related test cases
rg -B 5 -A 5 "presence.*test|test.*presence" Tests/AblyChatTests/IntegrationTests.swift
Length of output: 8702
Script:
#!/bin/bash
# Check implementation of waitToBeAbleToPerformPresenceOperations in main codebase
rg -B 5 -A 10 "waitToBeAbleToPerformPresenceOperations" Sources/AblyChat/RoomFeature.swift Sources/AblyChat/RoomLifecycleManager.swift
# Check how RoomStatus error is used in these files
rg -B 3 -A 3 "RoomStatus.*error" Sources/AblyChat/RoomFeature.swift Sources/AblyChat/RoomLifecycleManager.swift
Length of output: 12852
Sources/AblyChat/RoomFeature.swift (2)
46-46: Documentation accurately reflects CHA-RL9 specification.
The updated documentation clearly describes the new behavior for handling room status changes during presence operations, with proper references to the specification points.
46-46: Verify implementation alignment with documentation.
Let's verify that the implementation in RoomLifecycleManager correctly implements this documented behavior.
✅ Verification successful
Let me gather more information to verify the implementation.
Implementation correctly aligns with documentation
The implementation in RoomLifecycleManager matches the documented behavior exactly:
- When in ATTACHING status, it waits for the next status change via
onRoomStatusChange - If the new status is ATTACHED, it returns (shown by the
breakafter the commentCHA-PR3e, CHA-PR11e, CHA-PR6d, CHA-T2d) - Otherwise, it throws a
roomInInvalidStateerror with the cause from the status change - This behavior is also verified by comprehensive test cases in
DefaultRoomLifecycleManagerTests
🏁 Scripts executed
The following scripts were executed for the analysis:
Script:
#!/bin/bash
# Description: Search for the implementation of waitToBeAbleToPerformPresenceOperations
# to verify it handles ATTACHING status as documented
# Look for the implementation
ast-grep --pattern 'func waitToBeAbleToPerformPresenceOperations(requestedByFeature $$$) $$$'
# Look for error handling
rg -A 5 'roomInInvalidState'
Length of output: 5963
Script:
#!/bin/bash
# Search for the implementation of waitToBeAbleToPerformPresenceOperations
# specifically looking for ATTACHING status handling
ast-grep --pattern 'case .attaching:
$$$'
# Look for the full implementation to see the context
rg -A 20 'func waitToBeAbleToPerformPresenceOperations'
Length of output: 18511
Sources/AblyChat/Errors.swift (5)
54-62: LGTM! Status code aligns with specification.
The 500 status code for roomInInvalidState is appropriate and properly referenced to CHA-RL9c specification.
82-82: LGTM! Error case properly structured.
The new error case follows the established pattern and appropriately includes an optional cause for error propagation.
121-122: LGTM! Straightforward error code mapping.
The mapping from ChatError to ErrorCode is clear and consistent with the existing pattern.
195-196: LGTM! Proper error propagation.
The cause property correctly propagates the underlying error, which is essential for debugging and error handling.
Line range hint 37-196: Verify implementation against CHA-RL9 specification.
Let's verify that all required error cases from the specification are implemented.
✅ Verification successful
Implementation correctly follows CHA-RL9 specification requirements
The code implements all required error cases from CHA-RL9 specification as evidenced by:
- Proper handling of room status transitions (CHA-RL9a, CHA-RL9b)
- Correct implementation of
roomInInvalidStateerror with:- Error code 102_107
- Status code 500 (as per CHA-RL9c)
- Appropriate error message and cause propagation
- Complete test coverage verifying the specification requirements
🏁 Scripts executed
The following scripts were executed for the analysis:
Script:
#!/bin/bash
# Description: Check the specification PR for required error cases
# Note: Using gh cli to fetch the spec PR content
# Fetch the specification PR content
gh api \
-H "Accept: application/vnd.github+json" \
-H "X-GitHub-Api-Version: 2022-11-28" \
repos/ably/specification/pulls/232 > spec_pr.json
# Extract and analyze the PR content for error cases
jq -r '.body' spec_pr.json | grep -A 5 -B 5 "error"
# Clean up
rm spec_pr.json
Length of output: 190
Script:
#!/bin/bash
# Let's try a different approach by searching for the specification reference in the codebase
# First, let's look for any comments or documentation mentioning CHA-RL9
rg -i "CHA-RL9" -B 5 -A 5
# Also search for any related specification references in markdown files
fd -e md | xargs rg -i "CHA-RL9"
# Look for any related error documentation
rg -i "roomininvalidstate" -B 5 -A 5
Length of output: 18214
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Actionable comments posted: 0
🧹 Outside diff range and nitpick comments (6)
Sources/AblyChat/Errors.swift (2)
37-38: Add documentation comment for the new error case.Consider adding a documentation comment for the
roomInInvalidStatecase to maintain consistency with other error codes and improve API documentation.+ /// Indicates that a room operation failed because the room was in an invalid state. + /// This error is thrown when attempting operations on a room that is in an incompatible state. case roomInInvalidState = 102_107
183-184: Consider enhancing the error message.The current message could be more specific about what constitutes an "invalid state" to help developers better understand and debug the issue.
- "The room operation failed because the room was in an invalid state." + "The room operation failed because the room was in an invalid state. Expected the room to be in ATTACHED state."Tests/AblyChatTests/DefaultRoomLifecycleManagerTests.swift (3)
1906-1910: Consider adding assertion for feature parameter.While the feature parameter is marked as arbitrary, it would be good to verify that the feature parameter is correctly passed through to the manager.
let statusChangeWaitSubscription = await manager.testsOnly_subscribeToStatusChangeWaitEvents() +let feature = RoomFeature.messages // arbitrary async let waitToBeAbleToPerformPresenceOperationsResult: Void = manager.waitToBeAbleToPerformPresenceOperations(requestedByFeature: .messages /* arbitrary */ ) // Then: The manager waits for its room status to change -_ = try #require(await statusChangeWaitSubscription.first { _ in true }) +let waitEvent = try #require(await statusChangeWaitSubscription.first { _ in true }) +#expect(waitEvent.feature == feature)
1946-1950: Consider adding assertion for feature parameter.Similar to the previous test, it would be good to verify that the feature parameter is correctly passed through to the manager.
let statusChangeWaitSubscription = await manager.testsOnly_subscribeToStatusChangeWaitEvents() +let feature = RoomFeature.messages // arbitrary async let waitToBeAbleToPerformPresenceOperationsResult: Void = manager.waitToBeAbleToPerformPresenceOperations(requestedByFeature: .messages /* arbitrary */ ) // Then: The manager waits for its room status to change -_ = try #require(await statusChangeWaitSubscription.first { _ in true }) +let waitEvent = try #require(await statusChangeWaitSubscription.first { _ in true }) +#expect(waitEvent.feature == feature)
1964-1965: Consider extracting error creation to a helper method.The error creation logic could be extracted to a helper method to improve readability and reusability.
+private func createExpectedCause(feature: RoomFeature, underlyingError: ARTErrorInfo) -> ARTErrorInfo { + return ARTErrorInfo(chatError: .attachmentFailed(feature: feature, underlyingError: underlyingError)) +} -let expectedCause = ARTErrorInfo(chatError: .attachmentFailed(feature: .messages, underlyingError: contributorAttachError)) // using our knowledge of CHA-RL1h4 +let expectedCause = createExpectedCause(feature: .messages, underlyingError: contributorAttachError) // using our knowledge of CHA-RL1h4Sources/AblyChat/RoomLifecycleManager.swift (1)
1217-1221: Address the TODO for handlingnilnextRoomStatusChangeThe TODO comment indicates the need to properly handle the case where
nextRoomStatusChangeisnil, which can occur if the currentTaskis cancelled. Currently, treating it as an invalid status change may not be sufficient, and proper cancellation handling is important to prevent unexpected errors.As a follow-up, I can help implement appropriate error handling for the
nilcase to ensure task cancellation is managed correctly. Would you like me to generate a proposed solution or open a new GitHub issue to track this task?
📜 Review details
Configuration used: CodeRabbit UI
Review profile: CHILL
📒 Files selected for processing (5)
Sources/AblyChat/Errors.swift(6 hunks)Sources/AblyChat/RoomFeature.swift(1 hunks)Sources/AblyChat/RoomLifecycleManager.swift(1 hunks)Sources/AblyChat/RoomStatus.swift(1 hunks)Tests/AblyChatTests/DefaultRoomLifecycleManagerTests.swift(3 hunks)
🚧 Files skipped from review as they are similar to previous changes (2)
- Sources/AblyChat/RoomFeature.swift
- Sources/AblyChat/RoomStatus.swift
🧰 Additional context used
📓 Learnings (2)
Sources/AblyChat/RoomLifecycleManager.swift (2)
Learnt from: lawrence-forooghian
PR: ably-labs/ably-chat-swift#54
File: Sources/AblyChat/RoomLifecycleManager.swift:0-0
Timestamp: 2024-11-12T15:07:31.866Z
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: Sources/AblyChat/RoomLifecycleManager.swift:217-220
Timestamp: 2024-11-12T15:07:31.865Z
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.
Tests/AblyChatTests/DefaultRoomLifecycleManagerTests.swift (2)
Learnt from: lawrence-forooghian
PR: ably-labs/ably-chat-swift#54
File: Tests/AblyChatTests/RoomLifecycleManagerTests.swift:335-335
Timestamp: 2024-11-12T15:07:31.865Z
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:627-631
Timestamp: 2024-11-12T15:07:39.465Z
Learning: The closure `detachImpl` in `RoomLifecycleManagerTests.swift` functions as intended without external state variables to track invocation count.
🔇 Additional comments (7)
Sources/AblyChat/Errors.swift (5)
54-62: LGTM! Status code assignment aligns with specification.
The assignment of status code 500 for roomInInvalidState is correctly grouped with other server-side errors and is properly documented with reference to the CHA-RL9c specification.
82-82: LGTM! Error case properly structured.
The roomInInvalidState case with optional cause parameter follows the established error handling pattern and allows for proper error propagation.
121-122: LGTM! Correct error code mapping.
The mapping from ChatError.roomInInvalidState to ErrorCode.roomInInvalidState is correctly implemented.
195-196: LGTM! Proper error cause propagation.
The cause property correctly handles the optional underlying error for the roomInInvalidState case.
Line range hint 37-196: Verify implementation against CHA-RL9 specification.
Let's verify that all error cases required by the CHA-RL9 specification are implemented.
✅ Verification successful
Let me gather more information about the implementation details to verify against CHA-RL9 specification.
Implementation correctly follows CHA-RL9 specification requirements
The implementation correctly handles invalid room states as per CHA-RL9 specification:
- Waits for room status change when in ATTACHING state (CHA-RL9a)
- Verifies if new status is ATTACHED (CHA-RL9b)
- Throws roomInInvalidState with proper error code (102107) and status code (500) when room transitions to non-ATTACHED state (CHA-RL9c)
- Includes appropriate test coverage for both success and failure scenarios
🏁 Scripts executed
The following scripts were executed for the analysis:
Script:
#!/bin/bash
# Description: Search for references to CHA-RL9 in the codebase and specification
# Search for CHA-RL9 references in code comments
echo "Searching for CHA-RL9 references in code..."
rg -i "cha-rl9"
# Search for related error handling code
echo "Searching for room state error handling..."
ast-grep --pattern 'case roomInInvalidState'
Length of output: 1315
Script:
#!/bin/bash
# Search for room state handling implementation details
# Check RoomLifecycleManager implementation
echo "Checking RoomLifecycleManager implementation..."
rg -A 10 "CHA-RL9" Sources/AblyChat/RoomLifecycleManager.swift
# Check test cases
echo "Checking test implementations..."
rg -A 10 "CHA-RL9" Tests/AblyChatTests/DefaultRoomLifecycleManagerTests.swift
# Check error handling implementation
echo "Looking for roomInInvalidState error handling..."
rg -A 5 "roomInInvalidState" Sources/AblyChat/
Length of output: 8506
Tests/AblyChatTests/DefaultRoomLifecycleManagerTests.swift (2)
1879-1886: LGTM! Clear and comprehensive spec coverage documentation.
The test method is well-documented with appropriate spec tags, clearly indicating both full and partial spec coverage.
1919-1926: LGTM! Clear and comprehensive spec coverage documentation.
The test method is well-documented with appropriate spec tags, clearly indicating both full and partial spec coverage.
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Actionable comments posted: 1
🧹 Outside diff range and nitpick comments (5)
Sources/AblyChat/Errors.swift (2)
37-38: Add documentation for the new error code.The new
roomInInvalidStateerror code follows the established pattern, but it would benefit from documentation comments explaining when this error occurs, similar to other cases in the enum.
183-184: Enhance error message with more context.The current message could be more helpful by specifying what constitutes an invalid state or what the user can do about it. Consider expanding it to include:
- What states are considered invalid
- What operation was attempted
- What the user should do next
Example improvement:
- "The room operation failed because the room was in an invalid state." + "The room operation failed because the room was in an invalid state (e.g., attempting presence operations while the room is detaching). Please ensure the room is in the correct state before retrying the operation."Sources/AblyChat/RoomLifecycleManager.swift (1)
1217-1218: Track task cancellation handlingThe TODO comment about task cancellation handling should be tracked in an issue.
Would you like me to create a GitHub issue to track the task cancellation handling implementation mentioned in the TODO comment? This would help ensure proper handling of cancelled tasks in the future.
Tests/AblyChatTests/DefaultRoomLifecycleManagerTests.swift (2)
Line range hint
1919-1965: Consider extracting error verification logic into a helper method.The test case effectively verifies error handling, but the error verification logic could be made more reusable.
Consider extracting the error verification into a helper method:
private func verifyRoomInvalidStateError(_ error: Error?, expectedCause: ARTErrorInfo) { #expect(isChatError(error, withCode: .roomInInvalidState, cause: expectedCause)) }This would make the test more concise and the error verification pattern more reusable across other test cases.
Line range hint
1966-2024: Standardize error handling across test cases.The test cases effectively verify different room states but have some duplicated error handling patterns. Consider:
- Creating a shared error verification helper
- Using consistent error handling patterns across all tests
- Adding test cases for the remaining @specPartial implementations once features are completed
Example helper method for standardized error handling:
private func verifyFeatureOperationError(_ error: Error?, feature: RoomFeature, expectedMessage: String) { #expect(isChatError(error, withCode: .nonspecific, message: "To perform this \(feature) operation, \(expectedMessage)")) }Would you like me to help track the TODO items by creating GitHub issues for the remaining @specPartial implementations?
📜 Review details
Configuration used: CodeRabbit UI
Review profile: CHILL
📒 Files selected for processing (5)
Sources/AblyChat/Errors.swift(6 hunks)Sources/AblyChat/RoomFeature.swift(1 hunks)Sources/AblyChat/RoomLifecycleManager.swift(1 hunks)Sources/AblyChat/RoomStatus.swift(1 hunks)Tests/AblyChatTests/DefaultRoomLifecycleManagerTests.swift(3 hunks)
🚧 Files skipped from review as they are similar to previous changes (2)
- Sources/AblyChat/RoomFeature.swift
- Sources/AblyChat/RoomStatus.swift
🧰 Additional context used
📓 Learnings (2)
Sources/AblyChat/RoomLifecycleManager.swift (2)
Learnt from: lawrence-forooghian
PR: ably-labs/ably-chat-swift#54
File: Sources/AblyChat/RoomLifecycleManager.swift:0-0
Timestamp: 2024-11-12T15:07:31.866Z
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: Sources/AblyChat/RoomLifecycleManager.swift:217-220
Timestamp: 2024-11-12T15:07:31.865Z
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.
Tests/AblyChatTests/DefaultRoomLifecycleManagerTests.swift (2)
Learnt from: lawrence-forooghian
PR: ably-labs/ably-chat-swift#54
File: Tests/AblyChatTests/RoomLifecycleManagerTests.swift:335-335
Timestamp: 2024-11-12T15:07:31.865Z
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:627-631
Timestamp: 2024-11-12T15:07:39.465Z
Learning: The closure `detachImpl` in `RoomLifecycleManagerTests.swift` functions as intended without external state variables to track invocation count.
🔇 Additional comments (7)
Sources/AblyChat/Errors.swift (4)
54-62: LGTM! Status code aligns with specification.
The 500 status code for roomInInvalidState is appropriately grouped with attachment failures, and the comment provides clear traceability to CHA-RL9c specification.
82-82: LGTM! Well-structured error case.
The roomInInvalidState case with optional cause parameter is well-designed, allowing for detailed error reporting while maintaining flexibility.
121-122: LGTM! Consistent error code mapping.
The mapping from ChatError to ErrorCode is straightforward and follows the established pattern.
195-196: LGTM! Proper cause handling.
The cause handling for roomInInvalidState is consistent with other error cases and correctly propagates the underlying error information.
Sources/AblyChat/RoomLifecycleManager.swift (2)
1195-1200: Well-documented implementation choice!
The comments effectively explain the rationale behind implementing this method within the manager class, highlighting the importance of isolation for status change handling.
1201-1250: Implementation aligns with CHA-RL9 specification
The implementation correctly handles:
- Room status verification (CHA-RL9a)
- Status change subscription and verification (CHA-RL9b, CHA-RL9c)
- Error handling for different room states
- Test support infrastructure
The code structure is clean and well-organized, with proper separation of concerns between the main implementation and test support code.
Tests/AblyChatTests/DefaultRoomLifecycleManagerTests.swift (1)
Line range hint 1879-1918: LGTM! Well-structured test implementation.
The test case effectively verifies the behavior when a room transitions from ATTACHING to ATTACHED state. The implementation:
- Follows clear Given-When-Then pattern
- Uses appropriate mocking and async/await
- Properly verifies the wait behavior and successful completion
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Resolves #131.
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🧹 Outside diff range and nitpick comments (4)
Sources/AblyChat/Errors.swift (2)
37-38: Add documentation for the new error code.Since
ErrorCodeis a public enum, please add a documentation comment for the newroomInInvalidStatecase explaining when this error occurs, similar to other cases in the enum.
183-184: Consider making the error message more specific.The current message could be more helpful by specifying which states are considered invalid for the operation. For example: "The room operation failed because the room was in {actual_state} state, but expected {valid_states}."
Tests/AblyChatTests/DefaultRoomLifecycleManagerTests.swift (2)
Line range hint
1879-1918: Good test implementation with room for minor improvements.The test effectively verifies the wait behavior for presence operations when transitioning to ATTACHED state. Consider these enhancements for better clarity:
- Rename
waitToBeAbleToPerformPresenceOperationsResultto something more descriptive likepresenceOperationsWaitResult- Add an assertion to verify the final room status is ATTACHED after the operation completes
async let waitToBeAbleToPerformPresenceOperationsResult: Void = manager.waitToBeAbleToPerformPresenceOperations(requestedByFeature: .messages /* arbitrary */ ) +async let presenceOperationsWaitResult: Void = manager.waitToBeAbleToPerformPresenceOperations(requestedByFeature: .messages /* arbitrary */ ) // Then: The call to `waitToBeAbleToPerformPresenceOperations(requestedByFeature:)` succeeds -try await waitToBeAbleToPerformPresenceOperationsResult +try await presenceOperationsWaitResult +#expect(await manager.roomStatus == .attached)
Line range hint
1919-1965: Good error handling test with room for improvement.The test effectively verifies the error handling when transitioning to a non-ATTACHED state. Consider these enhancements for better clarity and maintainability:
- Use XCTest's throwing APIs instead of manual try-catch
- Rename variables for better clarity
-var caughtError: Error? -do { - try await waitToBeAbleToPerformPresenceOperationsResult -} catch { - caughtError = error -} - -let expectedCause = ARTErrorInfo(chatError: .attachmentFailed(feature: .messages, underlyingError: contributorAttachError)) -#expect(isChatError(caughtError, withCode: .roomInInvalidState, cause: expectedCause)) +let expectedErrorCause = ARTErrorInfo(chatError: .attachmentFailed(feature: .messages, underlyingError: contributorAttachError)) +await #expect { + try await waitToBeAbleToPerformPresenceOperationsResult +} throws: { error in + isChatError(error, withCode: .roomInInvalidState, cause: expectedErrorCause) +}
📜 Review details
Configuration used: CodeRabbit UI
Review profile: CHILL
📒 Files selected for processing (5)
Sources/AblyChat/Errors.swift(6 hunks)Sources/AblyChat/RoomFeature.swift(1 hunks)Sources/AblyChat/RoomLifecycleManager.swift(1 hunks)Sources/AblyChat/RoomStatus.swift(1 hunks)Tests/AblyChatTests/DefaultRoomLifecycleManagerTests.swift(3 hunks)
🚧 Files skipped from review as they are similar to previous changes (3)
- Sources/AblyChat/RoomFeature.swift
- Sources/AblyChat/RoomLifecycleManager.swift
- Sources/AblyChat/RoomStatus.swift
🧰 Additional context used
📓 Learnings (1)
Tests/AblyChatTests/DefaultRoomLifecycleManagerTests.swift (2)
Learnt from: lawrence-forooghian
PR: ably-labs/ably-chat-swift#54
File: Tests/AblyChatTests/RoomLifecycleManagerTests.swift:335-335
Timestamp: 2024-11-12T15:07:31.865Z
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:627-631
Timestamp: 2024-11-12T15:07:39.465Z
Learning: The closure `detachImpl` in `RoomLifecycleManagerTests.swift` functions as intended without external state variables to track invocation count.
🔇 Additional comments (6)
Sources/AblyChat/Errors.swift (5)
54-62: LGTM! Good spec reference.
The status code assignment aligns with other server-side errors, and the comment provides good traceability to the spec (CHA-RL9c).
82-82: LGTM! Consistent error pattern.
The new error case follows the established pattern by allowing an optional cause to be propagated.
121-122: LGTM! Straightforward mapping.
The error code mapping follows the established pattern.
195-196: LGTM! Consistent error propagation.
The cause handling follows the established pattern.
Line range hint 37-196: Verify implementation against CHA-RL9 specification.
The changes implement error handling for invalid room states as specified in CHA-RL9. Let's verify that all required error scenarios from the spec are covered.
✅ Verification successful
Implementation correctly follows CHA-RL9 specification
The implementation correctly handles invalid room states as per CHA-RL9:
- Throws
roomInInvalidStateerror with appropriate status code (500) when room is in an invalid state - Properly propagates the underlying cause through
ARTErrorInfo - Correctly implements presence operation validations with proper error handling
- Has test coverage verifying the invalid state scenarios
The error handling is integrated with the presence operations through waitToBeAbleToPerformPresenceOperations, which enforces the state validation requirements from the specification.
🏁 Scripts executed
The following scripts were executed for the analysis:
Script:
#!/bin/bash
# Description: Search for all implementations using this new error code to ensure complete spec coverage
# Search for usages of roomInInvalidState
echo "Searching for roomInInvalidState usage..."
rg -l "roomInInvalidState"
# Search for presence operation implementations that might need this error
echo "Searching for presence operation implementations..."
rg -l "waitToBeAbleToPerformPresenceOperations"
Length of output: 770
Script:
#!/bin/bash
# Let's examine the implementation details to verify against CHA-RL9 spec
# Check RoomLifecycleManager for invalid state handling
echo "=== RoomLifecycleManager invalid state handling ==="
rg -A 10 "roomInInvalidState" Sources/AblyChat/RoomLifecycleManager.swift
# Check presence operation implementations
echo -e "\n=== Presence operation implementations ==="
rg -A 10 "waitToBeAbleToPerformPresenceOperations" Sources/AblyChat/DefaultPresence.swift
# Check test coverage
echo -e "\n=== Test coverage for invalid states ==="
rg -A 10 "roomInInvalidState" Tests/AblyChatTests/DefaultRoomLifecycleManagerTests.swift
Length of output: 6717
Tests/AblyChatTests/DefaultRoomLifecycleManagerTests.swift (1)
Line range hint 1879-1965: Well-implemented test coverage for CHA-RL9 specification.
The implementation provides thorough test coverage for the CHA-RL9 specification points:
- CHA-RL9a: Both success and failure cases when in ATTACHING state
- CHA-RL9b: Verification of successful transition to ATTACHED state
- CHA-RL9c: Error handling when transitioning to non-ATTACHED state
The tests are well-structured, properly documented with spec references, and effectively verify the required functionality.
Resolves #131.
Summary by CodeRabbit
New Features
Bug Fixes
Documentation
FeatureChannelprotocol to clarify behavior during room status changes.Tests