[Known Build Error] RequestPathBase_WithDoubleSlashes_Split fails - IIS is not installed in the expected path #62924
Description
Previously reported in regular issue that is not allowing for escaping Build Analysis: #51679. First hit was observed on #62885: log. Since then, it failed on all the runs, see the history log screenshot in the original issue.
Build Information
Build: https://dev.azure.com/dnceng-public/cbb18261-c48f-4abb-8651-8cdcb5474649/_build/results?buildId=1105662
Build error leg or test failing: Microsoft.AspNetCore.Server.IIS.IISExpress.FunctionalTests.RequestPathBaseTests.RequestPathBase_Split
Pull request: #62905
Error Message
Fill the error message using step by step known issues guidance.
{
"ErrorPattern": "Microsoft\\.AspNetCore\\.Server\\.IIS\\.IISExpress\\.FunctionalTests\\.RequestPathBaseTests\\.RequestPathBase_WithDoubleSlashes_Split\\(url: \"\\/Sub\\/App\\/PathANDPathBase\\/PATH\", expectedPathBase: \"\\/Sub\\/App\\/PathANDPathBase\", expectedPath: \"\\/PATH\"\\) \\[FAIL\\]",
"BuildRetry": false,
"ExcludeConsoleLog": false
}The pattern is broader than the error because we cannot use multi-line patterns.
example:
Microsoft.AspNetCore.Server.IIS.IISExpress.FunctionalTests.RequestPathBaseTests.RequestPathBase_WithDoubleSlashes_Split(url: "/Sub/App/PathANDPathBase/PATH", expectedPathBase: "/Sub/App/PathANDPathBase", expectedPath: "/PATH") [FAIL]
2025-07-25T10:04:47.5390862Z [xUnit.net 00:11:17.75] Assert.Equal() Failure: Values differ
2025-07-25T10:04:47.5422015Z [xUnit.net 00:11:17.75] Expected: 200
2025-07-25T10:04:47.5456092Z [xUnit.net 00:11:17.75] Actual: 500
2025-07-25T10:04:47.5491134Z [xUnit.net 00:11:17.75] Stack Trace:
2025-07-25T10:04:47.5526471Z [xUnit.net 00:11:17.75] /_/src/Servers/IIS/IIS/test/Common.FunctionalTests/RequestPathBaseTests.cs(78,0): at Microsoft.AspNetCore.Server.IIS.IISExpress.FunctionalTests.RequestPathBaseTests.RequestPathBase_WithDoubleSlashes_Split(String url, String expectedPathBase, String expectedPath)
2025-07-25T10:04:47.5559365Z [xUnit.net 00:11:17.75] --- End of stack trace from previous ___location ---
2025-07-25T10:04:47.5589295Z [xUnit.net 00:11:17.75] Output:
2025-07-25T10:04:47.5623272Z [xUnit.net 00:11:17.75] | [0.001s] TestLifetime Information: Starting test RequestPathBase_WithDoubleSlashes_Split-_Sub_App_PathANDPathBase_PATH-_Sub_App_PathANDPathBase-_PATH at 2025-07-25T10:04:47
2025-07-25T10:04:47.5658380Z [xUnit.net 00:11:17.75] | [0.002s] FIXTURE:Microsoft.AspNetCore.Server.IntegrationTesting.IIS.IISExpressDeployer Information: iisexpress stdout: IncrementMessages called
2025-07-25T10:04:47.5696582Z [xUnit.net 00:11:17.75] | [0.002s] FIXTURE:Microsoft.AspNetCore.Server.IntegrationTesting.IIS.IISExpressDeployer Information: iisexpress stdout: Response sent: http://localhost:51884/Sub/App/PathANDPathBase/PATH with HTTP status 500.19
2025-07-25T10:04:47.5727603Z [xUnit.net 00:11:17.75] | [0.005s] Microsoft.AspNetCore.Server.IIS.IISExpress.FunctionalTests.RequestPathBaseTests Error: Test threw an exception.
2025-07-25T10:04:47.5762940Z [xUnit.net 00:11:17.75] | Xunit.Sdk.EqualException: Assert.Equal() Failure: Values differ
2025-07-25T10:04:47.5823479Z [xUnit.net 00:11:17.75] | Expected: 200
2025-07-25T10:04:47.5837227Z [xUnit.net 00:11:17.75] | Actual: 500
2025-07-25T10:04:47.5865303Z [xUnit.net 00:11:17.75] | at Xunit.Assert.Equal[T](T expected, T actual, IEqualityComparer`1 comparer) in /_/src/xunit.assert/Asserts/EqualityAsserts.cs:line 154
2025-07-25T10:04:47.5899986Z [xUnit.net 00:11:17.75] | at Microsoft.AspNetCore.Server.IIS.IISExpress.FunctionalTests.RequestPathBaseTests.RequestPathBase_WithDoubleSlashes_Split(String url, String expectedPathBase, String expectedPath) in /_/src/Servers/IIS/IIS/test/Common.FunctionalTests/RequestPathBaseTests.cs:line 78
2025-07-25T10:04:47.5933712Z [xUnit.net 00:11:17.75] | at Xunit.Sdk.TestInvoker`1.<>c__DisplayClass47_0.<<InvokeTestMethodAsync>b__1>d.MoveNext() in /_/src/xunit.execution/Sdk/Frameworks/Runners/TestInvoker.cs:line 259
2025-07-25T10:04:47.5965590Z [xUnit.net 00:11:17.75] | --- End of stack trace from previous ___location ---
2025-07-25T10:04:47.6004641Z [xUnit.net 00:11:17.75] | at Xunit.Sdk.ExecutionTimer.AggregateAsync(Func`1 asyncAction) in /_/src/xunit.execution/Sdk/Frameworks/ExecutionTimer.cs:line 48
2025-07-25T10:04:47.6033273Z [xUnit.net 00:11:17.75] | at Xunit.Sdk.ExceptionAggregator.RunAsync(Func`1 code) in /_/src/xunit.core/Sdk/ExceptionAggregator.cs:line 90
2025-07-25T10:04:47.6069142Z [xUnit.net 00:11:17.75] | [0.005s] TestLifetime Information: Finished test RequestPathBase_WithDoubleSlashes_Split-_Sub_App_PathANDPathBase_PATH-_Sub_App_PathANDPathBase-_PATH in 0.0047899s
2025-07-25T10:04:47.6093182Z [xUnit.net 00:11:17.75] Microsoft.AspNetCore.Server.IIS.IISExpress.FunctionalTests.RequestPathBaseTests.RequestPathBase_WithDoubleSlashes_Split(url: "/%2F\\/Sub/App/PathAndPathBase/Path", expectedPathBase: "/%2F\\/Sub/App/PathAndPathBase", expectedPath: "/Path")
Known issue validation
Build: 🔎 https://dev.azure.com/dnceng-public/public/_build/results?buildId=1105240
Error message validated: [Microsoft\.AspNetCore\.Server\.IIS\.IISExpress\.FunctionalTests\.RequestPathBaseTests\.RequestPathBase_WithDoubleSlashes_Split\(url: "\/Sub\/App\/PathANDPathBase\/PATH", expectedPathBase: "\/Sub\/App\/PathANDPathBase", expectedPath: "\/PATH"\) \[FAIL\]]
Result validation: ✅ Known issue matched with the provided build.
Validation performed at: 7/25/2025 11:58:58 AM UTC
Report
Summary
| 24-Hour Hit Count | 7-Day Hit Count | 1-Month Count |
|---|---|---|
| 0 | 0 | 16 |