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[Internal] Tests: Fixes AppCancellationDuringHedging with deterministic synchronization #5712

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Merged
kirankumarkolli merged 1 commit into from
Mar 19, 2026
Merged

[Internal] Tests: Fixes AppCancellationDuringHedging with deterministic synchronization #5712

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23 changes: 10 additions & 13 deletions Microsoft.Azure.Cosmos/tests/Microsoft.Azure.Cosmos.Tests/AvailabilityStrategyUnitTests.cs
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Original file line number Diff line number Diff line change
Expand Up @@ -281,8 +281,8 @@ public async Task AppCancellationDuringHedging_DoesNotSpawnNewHedgeRequests()
{
// Arrange
CrossRegionHedgingAvailabilityStrategy availabilityStrategy = new CrossRegionHedgingAvailabilityStrategy(
threshold: TimeSpan.FromMilliseconds(10),
thresholdStep: TimeSpan.FromMilliseconds(10));
threshold: TimeSpan.FromMilliseconds(100),
thresholdStep: TimeSpan.FromMilliseconds(100));

using RequestMessage request = CreateReadRequest();
using CosmosClient mockCosmosClient = CreateMockClientWithRegions(3);
Expand All @@ -296,19 +296,16 @@ public async Task AppCancellationDuringHedging_DoesNotSpawnNewHedgeRequests()

if (callNumber == 1)
{
// First request: cancel the app token after a brief delay
// First request: cancel the app token immediately
// This simulates an e2e timeout scenario
_ = Task.Delay(15).ContinueWith(_ => appCts.Cancel());
appCts.Cancel();
}

// Then wait - this will be cancelled
try
{
await Task.Delay(TimeSpan.FromSeconds(30), ct);
}
catch (OperationCanceledException)
{
throw;
}
// All requests block deterministically until cancelled via the token
TaskCompletionSource<ResponseMessage> tcs = new TaskCompletionSource<ResponseMessage>();
using (ct.Register(() => tcs.TrySetCanceled(ct)))
{
await tcs.Task;
}

return new ResponseMessage(HttpStatusCode.OK);
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