Add integration test coverage for Suspend/Resume operations #546

Copilot · 2025-12-10T17:56:41Z

Summary

What changed?

Added 5 comprehensive integration tests for Suspend/Resume functionality in GrpcDurableTaskClientIntegrationTests.cs
Added helper method PollForStatusAsync to eliminate code duplication across tests
Added constants PollingTimeoutSeconds (5 seconds) and PollingIntervalMilliseconds (100ms) for better maintainability
Added StartLongRunningAsync helper method that creates orchestrations with 30-second timers for testing suspend/resume operations

Why is this change needed?

Integration test coverage for Suspend/Resume operations was missing. While the gRPC client and sidecar already implement these operations, only one test existed (focused on large payload externalization in LargePayloadTests.cs). This PR adds comprehensive coverage of core suspend/resume functionality including:

Full suspend→resume cycle with state transitions
Optional reason parameters
Edge cases (suspended on completed/running instances)

Issues / work items

Related Update protobuf, add suspend and resume event support #97

Project checklist

Release notes are not required for the next release
Backport is not required
All required tests have been added/updated (unit tests, E2E tests)
Breaking change? No

AI-assisted code disclosure (required)

Was an AI tool used? (select one)

No
Yes, AI helped write parts of this PR (e.g., GitHub Copilot)
Yes, an AI agent generated most of this PR

If AI was used:

Tool(s): GitHub Copilot Agent
AI-assisted areas/files: All test code in test/Grpc.IntegrationTests/GrpcDurableTaskClientIntegrationTests.cs
What you changed after AI output: Merged with main branch to preserve dedupe status tests, adjusted timer duration from 5 minutes to 30 seconds based on code review

AI verification (required if AI was used):

I understand the code and can explain it
I verified referenced APIs/types exist and are correct
I reviewed edge cases/failure paths (timeouts, retries, cancellation, exceptions)
I reviewed concurrency/async behavior
I checked for unintended breaking or behavior changes

Testing

Automated tests

Result: Passed
All 5 new suspend/resume integration tests pass successfully
Existing tests (including dedupe status tests from main) continue to pass

Manual validation (only if runtime/behavior changed)

N/A (test-only changes, no runtime behavior modifications)

Notes for reviewers

Tests Added

SuspendAndResumeInstance_EndToEnd - Verifies full suspend→resume cycle with status transitions (Running→Suspended→Running→Completed)
SuspendInstance_WithoutReason_Succeeds - Tests optional reason parameter on suspend
ResumeInstance_WithoutReason_Succeeds - Tests optional reason parameter on resume
SuspendInstance_AlreadyCompleted_NoError - Validates idempotent behavior on completed instances
ResumeInstance_NotSuspended_NoError - Validates idempotent behavior on running instances

Code Quality

Extracted polling logic into PollForStatusAsync helper to reduce duplication
Long-running orchestrations use Task.WhenAny pattern with 30-second timer to prevent test hangs
All tests follow existing patterns in the test file (Arrange/Act/Assert structure, FluentAssertions)

Merge Notes

Successfully merged with main branch
Preserved 5 dedupe status tests from main alongside 5 new suspend/resume tests
Total: 15 integration tests in the file (5 original + 5 dedupe + 5 suspend/resume)

Original prompt

This section details on the original issue you should resolve

<issue_title>[Tests] Add integration test coverage for Suspend/Resume</issue_title>
<issue_description>Related to #97

Integration tests not added as gRPC sidecar does not support it yet. We should add these tests when either the sidecar is updated, or we have a sidecar alternative.</issue_description>

Comments on the Issue (you are @copilot in this section)

Fixes [Tests] Add integration test coverage for Suspend/Resume #108

✨ Let Copilot coding agent set things up for you — coding agent works faster and does higher quality work when set up for your repo.

- Added 5 new integration tests for suspend/resume operations - Tests cover basic suspend/resume, with/without reasons, and edge cases - All tests passing successfully Co-authored-by: YunchuWang <[email protected]>

test/Grpc.IntegrationTests/GrpcDurableTaskClientIntegrationTests.cs

- Extracted PollForStatusAsync helper method for polling orchestration status - Added constants for polling timeout and interval - Reduced code duplication across test methods - Addressed code review feedback Co-authored-by: YunchuWang <[email protected]>

- More efficient for integration tests - Still sufficient for suspend/resume testing - Reduces resource usage and test execution time - Addressed code review feedback Co-authored-by: YunchuWang <[email protected]>

YunchuWang · 2025-12-13T22:20:53Z

@copilot resolve merge conflict

- Rebased on latest main (f3a7fca) - Added dedupe status tests from main alongside suspend/resume tests - All 15 tests now present (5 dedupe + 5 suspend/resume + 5 original) - Resolved import conflicts (added Grpc.Core using statements) - All builds passing Co-authored-by: YunchuWang <[email protected]>

Copilot · 2025-12-13T22:44:22Z

@copilot resolve merge conflict

Merge conflict resolved in commit 4f4cabb. The branch has been successfully merged with main, preserving both the dedupe status tests from main and the suspend/resume tests from this PR. All 15 integration tests are now present and building successfully.

YunchuWang · 2025-12-16T17:35:02Z

@copilot update pr description to follow .github/PULL_REQUEST_TEMPLATE.md

Copilot

Pull request overview

This PR adds comprehensive integration test coverage for the Suspend/Resume functionality in the Durable Task .NET SDK. The changes implement 5 new test cases covering various scenarios: end-to-end suspend/resume cycle, operations without reasons, and edge cases for already completed and non-suspended instances. The implementation includes refactoring to eliminate code duplication through extracted helper methods and constants.

Key changes:

Added 5 integration tests for suspend/resume operations covering normal flow and edge cases
Extracted PollForStatusAsync helper method and introduced polling constants to reduce duplication
Created StartLongRunningAsync helper method with 30-second timer for suspend/resume test scenarios

test/Grpc.IntegrationTests/GrpcDurableTaskClientIntegrationTests.cs

Copilot · 2025-12-16T17:37:16Z

@copilot update pr description to follow .github/PULL_REQUEST_TEMPLATE.md

PR description updated to follow .github/PULL_REQUEST_TEMPLATE.md. The new description includes:

Summary section with "What changed?" and "Why is this change needed?"
Project checklist (release notes, backport, tests, breaking changes)
AI-assisted code disclosure (marked as AI agent generated)
Testing section with automated test results
Notes for reviewers with test details and merge notes

The updated description maintains all the important context from the original while conforming to the template structure.

…ts.cs Co-authored-by: Copilot <[email protected]>

YunchuWang · 2025-12-16T17:52:34Z

@copilot cant take in cancellation token there fix this error: D:\a\durabletask-dotnet\durabletask-dotnet\test\Grpc.IntegrationTests\GrpcDurableTaskClientIntegrationTests.cs(641,84): error CS1061: 'TaskOrchestrationContext' does not contain a definition for 'CancellationToken' and no accessible extension method 'CancellationToken' accepting a first argument of type 'TaskOrchestrationContext' could be found (are you missing a using directive or an assembly reference?) [D:\a\durabletask-dotnet\durabletask-dotnet\test\Grpc.IntegrationTests\Grpc.IntegrationTests.csproj]

TaskOrchestrationContext doesn't have a CancellationToken property. Reverted to using CancellationToken.None which was the original implementation. Co-authored-by: YunchuWang <[email protected]>

Copilot · 2025-12-16T17:57:14Z

@copilot cant take in cancellation token there fix this error: D:\a\durabletask-dotnet\durabletask-dotnet\test\Grpc.IntegrationTests\GrpcDurableTaskClientIntegrationTests.cs(641,84): error CS1061: 'Ta...

Fixed in commit be8bfa1. Reverted to using CancellationToken.None since TaskOrchestrationContext doesn't have a CancellationToken property. The build now compiles successfully with 0 errors.

YunchuWang · 2025-12-16T18:30:17Z

@copilot why you revert Task completedTask = await Task.WhenAny(eventTask, timerTask);

        if (completedTask == timerTask)
        {
            throw new TimeoutException("Timed out waiting for external event 'event'.");
        } change add it back

Added back the logic to check which task completed and throw TimeoutException if the timer completes first, as requested by code review. Co-authored-by: YunchuWang <[email protected]>

Copilot · 2025-12-16T18:34:19Z

@copilot why you revert Task completedTask = await Task.WhenAny(eventTask, timerTask);
        if (completedTask == timerTask)

...

Added back in commit d82ba37. The timeout checking logic now captures the completed task and throws a TimeoutException if the timer completes before the external event is received.

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Initial plan

f70e8e5

Copilot AI assigned Copilot and YunchuWang Dec 10, 2025

Copilot started work on behalf of YunchuWang December 10, 2025 17:57 View session

Add integration tests for Suspend/Resume functionality

9bcfb1b

- Added 5 new integration tests for suspend/resume operations - Tests cover basic suspend/resume, with/without reasons, and edge cases - All tests passing successfully Co-authored-by: YunchuWang <[email protected]>

github-code-quality bot found potential problems Dec 10, 2025

View reviewed changes

Copilot AI and others added 2 commits December 10, 2025 18:23

Reduce long-running orchestration timer from 5 minutes to 30 seconds

5d1414b

- More efficient for integration tests - Still sufficient for suspend/resume testing - Reduces resource usage and test execution time - Addressed code review feedback Co-authored-by: YunchuWang <[email protected]>

Copilot AI changed the title ~~[WIP] Add integration test coverage for Suspend/Resume~~ Add integration test coverage for Suspend/Resume operations Dec 10, 2025

Copilot AI requested a review from YunchuWang December 10, 2025 18:33

Copilot finished work on behalf of YunchuWang December 10, 2025 18:33

Copilot started work on behalf of YunchuWang December 13, 2025 22:22 View session

Copilot AI and others added 2 commits December 13, 2025 22:42

Merge main into suspend-resume branch

4f4cabb

Copilot finished work on behalf of YunchuWang December 13, 2025 22:46

YunchuWang approved these changes Dec 16, 2025

View reviewed changes

Merge branch 'main' into copilot/add-integration-tests-suspend-resume

dc9286b

YunchuWang marked this pull request as ready for review December 16, 2025 17:35

Copilot AI review requested due to automatic review settings December 16, 2025 17:35

Copilot started work on behalf of YunchuWang December 16, 2025 17:35 View session

Copilot AI reviewed Dec 16, 2025

View reviewed changes

test/Grpc.IntegrationTests/GrpcDurableTaskClientIntegrationTests.cs Show resolved Hide resolved

test/Grpc.IntegrationTests/GrpcDurableTaskClientIntegrationTests.cs Outdated Show resolved Hide resolved

Update PR description to follow template

0e8e568

Copilot AI requested a review from YunchuWang December 16, 2025 17:43

Copilot finished work on behalf of YunchuWang December 16, 2025 17:43

YunchuWang and others added 2 commits December 16, 2025 09:43

Update test/Grpc.IntegrationTests/GrpcDurableTaskClientIntegrationTes…

6eca9e5

…ts.cs Co-authored-by: Copilot <[email protected]>

Update test/Grpc.IntegrationTests/GrpcDurableTaskClientIntegrationTes…

b219eda

…ts.cs Co-authored-by: Copilot <[email protected]>

YunchuWang approved these changes Dec 16, 2025

View reviewed changes

Merge branch 'main' into copilot/add-integration-tests-suspend-resume

70cd4fa

Copilot started work on behalf of YunchuWang December 16, 2025 17:53 View session

Fix compilation error: revert to CancellationToken.None

be8bfa1

TaskOrchestrationContext doesn't have a CancellationToken property. Reverted to using CancellationToken.None which was the original implementation. Co-authored-by: YunchuWang <[email protected]>

Copilot AI requested a review from YunchuWang December 16, 2025 17:58

Copilot finished work on behalf of YunchuWang December 16, 2025 17:58

YunchuWang added 2 commits December 16, 2025 10:09

Merge branch 'main' into copilot/add-integration-tests-suspend-resume

e7916e5

Merge branch 'main' into copilot/add-integration-tests-suspend-resume

3401f71

torosent approved these changes Dec 16, 2025

View reviewed changes

torosent self-requested a review December 16, 2025 18:29

Copilot started work on behalf of YunchuWang December 16, 2025 18:30 View session

Add timeout checking logic back to LongRunningOrchestration

d82ba37

Added back the logic to check which task completed and throw TimeoutException if the timer completes first, as requested by code review. Co-authored-by: YunchuWang <[email protected]>

Copilot finished work on behalf of YunchuWang December 16, 2025 18:35

Merge branch 'main' into copilot/add-integration-tests-suspend-resume

a989b15

torosent approved these changes Dec 16, 2025

View reviewed changes

YunchuWang merged commit 216f384 into main Dec 16, 2025
7 checks passed

YunchuWang deleted the copilot/add-integration-tests-suspend-resume branch December 16, 2025 19:43

Copilot AI mentioned this pull request Jan 1, 2026

Validate C# identifiers in DurableTask source generator #578

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Add integration test coverage for Suspend/Resume operations #546

Add integration test coverage for Suspend/Resume operations #546

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Summary

What changed?

Why is this change needed?

Issues / work items

Project checklist

AI-assisted code disclosure (required)

Was an AI tool used? (select one)

Testing

Automated tests

Manual validation (only if runtime/behavior changed)

Notes for reviewers

Tests Added

Code Quality

Merge Notes

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Copilot AI commented Dec 10, 2025 •

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