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Fix flaky HttpRequestBuffering_DoesNotBufferDisabledOrOversizedLogs test #7304

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Merged
stephentoub merged 3 commits into from
Feb 24, 2026
Merged

Fix flaky HttpRequestBuffering_DoesNotBufferDisabledOrOversizedLogs test #7304

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3db2c52
Initial plan
Copilot Feb 14, 2026
f8a9618
Fix flaky test HttpRequestBuffering_DoesNotBufferDisabledOrOversizedL…
Copilot Feb 14, 2026
010b0ad
Fix comment to correctly describe log emission order
Copilot Feb 19, 2026
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20 changes: 8 additions & 12 deletions test/Libraries/Microsoft.AspNetCore.Diagnostics.Middleware.Tests/Logging/AcceptanceTests.cs
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Original file line number Diff line number Diff line change
Expand Up @@ -900,14 +900,10 @@ await RunAsync<TestStartup>(
services => services
.AddLogging(builder =>
{
// enable Microsoft.AspNetCore.Routing.Matching.DfaMatcher debug logs
// which are produced by ASP.NET Core within HTTP context.
// This is what is going to be buffered and tested.
builder.AddFilter("Microsoft.AspNetCore.Routing.Matching.DfaMatcher", LogLevel.Debug);

// Disable logs from HTTP logging middleware, otherwise even though they are not buffered,
// they will be logged as usual and contaminate test results:
builder.AddFilter("Microsoft.AspNetCore.HttpLogging", LogLevel.None);
// Disable logs from all ASP.NET Core infrastructure, otherwise they
// will contaminate test results:
builder.AddFilter("Microsoft.AspNetCore", LogLevel.None);
builder.AddFilter("Microsoft.AspNetCore.HttpLogging.HttpLoggingMiddleware", LogLevel.None);

builder.AddPerIncomingRequestBuffer(options =>
{
Expand Down Expand Up @@ -944,10 +940,10 @@ await RunAsync<TestStartup>(
logger.LogTrace($"This is a huge log message 3, {hugeState}");
await WaitForLogRecordsAsync(logCollector, _defaultLogTimeout);

// 1st log record is from DfaMatcher,
// 2, 3, 4th are from our "test" category
// and 5 and 6th are logs from the /logatrequest endpoint
Assert.Equal(6, logCollector.Count);
// 1st is the flushed Trace from "test" category
// 2nd and 3rd are logs emitted by the /logatrequest endpoint
// and 4th and 5th are unbuffered logs from our "test" category
Assert.Equal(5, logCollector.Count);
Assert.Equal(LogLevel.Trace, logCollector.LatestRecord.Level);
Assert.Equal("test", logCollector.LatestRecord.Category);
});
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