[wasm][coreclr] runtime tests on CI#123377

radekdoulik · 2026-01-20T12:56:15Z

Enable CoreCLR runtime tests on CI for browser/wasm using Node.js
Run CoreCLR runtime tests on browser/wasm in CI, using Node.js as the execution host. The design stays close to how desktop platforms run tests, minimizing complexity.
Key changes

CI pipelines: Add browser_wasm build and test jobs in runtime.yml. Introduce TargetsBrowserOnCoreCLR property to distinguish from Mono browser tests, setting TargetsMobile=false so tests follow the
desktop execution path rather than the mobile/xharness path.
Node.js test runner: Add --node flag to run.sh/run.cmd/run.py. Test scripts invoke node corerun.js with a configurable timeout when RunWithNodeJS is set (auto-configured in Helix for CoreCLR browser
targets).
WASM runtime fixes: Increase max memory to 4GB. Fix corerun.cpp to return actual exit code. Rework libCorerun.js exit handling for proper shutdown sequencing. Add 12 new interpreter-to-managed call
thunks discovered during test execution. Disabled primary reverse thunk lookup which needs fixing in separate PR.
Browser host: Propagate managed exit code to Node.js process.exitCode. TypeScript updates for Node.js environment support.
Test adjustments: Add PlatformDetection.IsWasm. Mark IsCoreClrInterpreter=true on WASM until codegen lands. Fix threading-related test attributes. Skip tests with known WASM issues:
[wasm][coreclr] EH throw in filter enters infinite loop #123793 — 3 tests: throwinfilter, b68872, GitHub_4044
[wasm][coreclr] ASSERT FAILED Expression: portableEntryPoint->IsValid() #124221 — 3 tests: GSDelegate, Runtime_70259 (cs + il), Runtime_79354
[wasm][coreclr] ASSERT FAILED Expression: slotNumber >= GetNumVirtuals() || pMDRet == m_pDeclMT->GetMethodDescForSlot_NoThrow(slotNumber) #124222 — 3 tests: sin3double, moduleHandleCache, switch6

Set `isTailcall` to `false`, when preparing the call. This is similar to how we set other state vars for the call, so I did it this way. Alternatively we can reset the `isTailcall` after updating the stack and frame for tailcalls. That would invalidate the meaning of the variable for the rest of the tailcall though, so we would need to rename it at least to signal, that it is valid only in the beginning of the tailcall.

Based on changes from the previous branch (https://github.com/radekdoulik/runtime/tree/clr-wasm-runtime-tests-with-node)

radekdoulik · 2026-01-20T15:09:39Z

/azp run runtime

azure-pipelines · 2026-01-20T15:10:03Z

Azure Pipelines failed to run 1 pipeline(s).

…hecked job

src/tests/JIT/Directed/Misc/function_pointer/MutualThdRecur-fptr.il

src/tests/Common/mergedrunner.targets

…on (dotnet#123215) Fixes dotnet#122923

…s' into clr-wasm-runtime-tests-on-node-2

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That will be fixed in separate PR

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Copilot reviewed 59 out of 60 changed files in this pull request and generated 4 comments.

src/native/corehost/browserhost/browserhost.cpp

eng/pipelines/runtime.yml

eng/liveBuilds.targets

src/coreclr/vm/wasm/helpers.cpp

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Pull request overview

Copilot reviewed 60 out of 61 changed files in this pull request and generated 6 comments.

src/tests/JIT/SIMD/Sums.cs

src/native/corehost/browserhost/browserhost.cpp

src/mono/sample/wasm/browser/wwwroot/main.js

src/tests/Common/CLRTest.Execute.Bash.targets

src/tests/Common/CoreCLRTestLibrary/CoreClrConfigurationDetection.cs

eng/liveBuilds.targets

# Conflicts: # src/coreclr/hosts/corerun/wasm/libCorerun.js # src/mono/sample/wasm/browser/wwwroot/main.js # src/native/corehost/browserhost/browserhost.cpp # src/native/corehost/browserhost/host/index.ts # src/native/corehost/browserhost/libBrowserHost.footer.js # src/native/libs/Common/JavaScript/types/ems-ambient.ts

…/radekdoulik/runtime into clr-wasm-runtime-tests-on-node-2

radekdoulik · 2026-02-19T22:05:39Z

/ba-g the failures are unrelated.

runtime-diagnostics failure is #121989

radekdoulik added 7 commits January 15, 2026 19:04

Alternative implementation

1016c3c

[wasm][coreclr] Build and run runtime tests on node

237de71

Based on changes from the previous branch (https://github.com/radekdoulik/runtime/tree/clr-wasm-runtime-tests-with-node)

Conditinally disable tests with threads on wasm in ST scenario

c7217c1

Add missing signuters for runtime tests

7e44832

Build artifacts and try to run tests

769df50

Reduce CI to browser_wasm temporarily

32e6a77

radekdoulik added this to the Future milestone Jan 20, 2026

radekdoulik added the area-Infrastructure-coreclr label Jan 20, 2026

github-project-automation bot added this to Runtime Infra Jan 20, 2026

dotnet-policy-service bot assigned radekdoulik Jan 20, 2026

Fix build_browser_wasm_linux_Release_CoreCLR_WasmBuildTests dependency

b5543f2

radekdoulik added 8 commits January 20, 2026 16:21

Fix build job suffix

7942bd0

Add hostedOs to the build dependency

37c67c9

Fix typo

7697993

Fix hostedOs location

3847f92

add jobParameters

d345451

Use hostedOs directly

d18ade8

Try to create the missing coreclr_common_test_build_p0_AnyOS_AnyCPU_c…

87d1662

…hecked job

Fix suffix

c4ad36d

build-analysis bot mentioned this pull request Jan 20, 2026

Assertion failures in System.Tests.ConvertTests.TryFromBase64Chars on Mono MiniJIT and Interpreter across multiple Linux and macOS platforms #123389

Closed

radekdoulik added 3 commits January 21, 2026 12:16

Use checked runtime configuration

840fea1

Fix build name for cases wiht hostedOs set

4febea9

Put back linux_x64 for CoreClrTestBuildHost

85c5607

jkoritzinsky reviewed Jan 21, 2026

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radekdoulik added 3 commits January 22, 2026 13:00

Put TestAssemblies=false back

683842e

[wasm][coreclr] Implement portable RhExceptionHandling_FailedAllocati…

b4c8999

…on (dotnet#123215) Fixes dotnet#122923

Merge remote-tracking branch 'remotes/rodo/clr-interp-fix-helper-call…

edf3697

…s' into clr-wasm-runtime-tests-on-node-2

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This was referenced Feb 18, 2026

Checkout failure: "Git fetch failed with exit code 128" dotnet/arcade#9009

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/root/helix/work/correlation/scripts/<hash>/execute.sh: Permission denied dotnet/dnceng#3412

Open

Disable primary lookup

248b5e3

That will be fixed in separate PR

radekdoulik marked this pull request as ready for review February 19, 2026 10:06

radekdoulik requested a review from akoeplinger as a code owner February 19, 2026 10:06

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radekdoulik changed the title ~~[wasm][coreclr] WIP runtime tests on CI~~ [wasm][coreclr] runtime tests on CI Feb 19, 2026

pavelsavara approved these changes Feb 19, 2026

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radekdoulik added 2 commits February 19, 2026 11:53

Feedback

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Feedback

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maraf approved these changes Feb 19, 2026

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pavelsavara added 2 commits February 19, 2026 16:34

Merge branch 'clr-wasm-runtime-tests-on-node-2' of https://github.com…

f5c3673

…/radekdoulik/runtime into clr-wasm-runtime-tests-on-node-2

build-analysis bot mentioned this pull request Feb 19, 2026

Sometimes the helix SDK uses GetWorkItemsAsync when workitems aren't done processing. dotnet/dnceng#6011

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3 tasks

radekdoulik merged commit 960dca4 into dotnet:main Feb 19, 2026
180 of 185 checks passed

github-project-automation bot moved this to Done in Runtime Infra Feb 19, 2026

dotnet-maestro bot mentioned this pull request Feb 20, 2026

[main] Source code updates from dotnet/runtime dotnet/dotnet#5009

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radekdoulik mentioned this pull request Feb 20, 2026

[wasm][coreclr] Use 4GB limit for corerun #124633

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