[browser][CoreCLR] smoke test libraries on V8 and Firefox#124641

pavelsavara · 2026-02-20T14:36:25Z

smoke test V8 + FF
version check for shells

- version check for shell

dotnet-policy-service · 2026-02-20T14:37:17Z

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Pull request overview

This PR expands the WebAssembly/CoreCLR smoke-test matrix to run library tests on Firefox and a V8 shell, and adds runtime version gating in the JS loader to fail fast on unsupported Node.js / shell versions.

Changes:

Add Node.js (>= 18) and V8 shell (>= 14) version checks to validateWasmFeatures() in the JS loader bootstrap.
Update the runtime pipeline to run CoreCLR wasm smoke/library tests on Firefox and V8 in addition to Chrome.

Reviewed changes

Copilot reviewed 2 out of 2 changed files in this pull request and generated 2 comments.

File	Description
`src/native/libs/Common/JavaScript/loader/bootstrap.ts`	Adds engine/runtime version checks during wasm feature validation.
`eng/pipelines/runtime.yml`	Enables additional wasm test scenarios (Firefox + V8) for CoreCLR library smoke tests.

src/native/libs/Common/JavaScript/loader/bootstrap.ts

Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>

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Pull request overview

Copilot reviewed 2 out of 2 changed files in this pull request and generated 4 comments.

src/native/libs/Common/JavaScript/loader/bootstrap.ts

eng/pipelines/runtime.yml

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Pull request overview

Copilot reviewed 3 out of 3 changed files in this pull request and generated 2 comments.

src/native/libs/Common/JavaScript/loader/bootstrap.ts

pavelsavara · 2026-02-20T16:31:57Z

Log

[15:52:29] info: Warning: unknown flag --expose_wasm.
[15:52:29] info: Try --help for options
[15:52:29] info: Incoming arguments: --setenv=DOTNET_TEST_WEBSOCKETHOST=127.0.0.1:35879 --setenv=DOTNET_TEST_HTTPHOST=127.0.0.1:35879 --setenv=DOTNET_TEST_REMOTE_LOOP_HOST=127.0.0.1:35879 --setenv=DOTNET_TEST_SECUREWEBSOCKETHOST=127.0.0.1:33769 --setenv=DOTNET_TEST_SECUREHTTPHOST=127.0.0.1:33769 --setenv=DOTNET_TEST_HTTP2HOST=127.0.0.1:33769 --setenv=XHARNESS_LOG_TEST_START=true --run WasmTestRunner.dll System.Runtime.InteropServices.JavaScript.Tests.dll -parallelThreads 1 -notrait category=IgnoreForCI -notrait category=OuterLoop -notrait category=failing
[15:52:29] info: Application arguments: --run WasmTestRunner.dll System.Runtime.InteropServices.JavaScript.Tests.dll -parallelThreads 1 -notrait category=IgnoreForCI -notrait category=OuterLoop -notrait category=failing
[15:52:29] info: WASM EXIT 1
[15:52:29] info: Process v8 exited with 1

pavelsavara · 2026-02-20T16:36:06Z

Firefox went just fine: Log

src/mono/browser/runtime/web-socket.ts

src/native/libs/Common/JavaScript/loader/bootstrap.ts

src/native/libs/System.Runtime.InteropServices.JavaScript.Native/interop/web-socket.ts

src/native/libs/System.Runtime.InteropServices.JavaScript.Native/interop/http.ts

Co-authored-by: Jan Kotas <jkotas@microsoft.com>

…ve/interop/http.ts Co-authored-by: Jan Kotas <jkotas@microsoft.com>

Co-authored-by: Jan Kotas <jkotas@microsoft.com>

…ve/interop/web-socket.ts Co-authored-by: Jan Kotas <jkotas@microsoft.com>

…nto v8_testing

pavelsavara · 2026-02-23T10:20:19Z

thank you @jkotas

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Pull request overview

Copilot reviewed 12 out of 12 changed files in this pull request and generated 3 comments.

src/native/libs/Common/JavaScript/loader/polyfills.ts

src/mono/browser/runtime/http.ts

src/native/libs/Common/JavaScript/loader/exit.ts

- smoke test V8 + FF

238ea2d

- version check for shell

pavelsavara added this to the 11.0.0 milestone Feb 20, 2026

pavelsavara requested review from ilonatommy, maraf and radekdoulik February 20, 2026 14:36

pavelsavara self-assigned this Feb 20, 2026

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pavelsavara added arch-wasm WebAssembly architecture area-Infrastructure-coreclr os-browser Browser variant of arch-wasm labels Feb 20, 2026

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Update src/native/libs/Common/JavaScript/loader/bootstrap.ts

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Simpler, V8 only

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pavelsavara and others added 2 commits February 23, 2026 11:13

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Update src/mono/browser/runtime/http.ts

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Co-authored-by: Jan Kotas <jkotas@microsoft.com>

Copilot AI review requested due to automatic review settings February 23, 2026 10:14

pavelsavara and others added 2 commits February 23, 2026 11:15

Update src/native/libs/System.Runtime.InteropServices.JavaScript.Nati…

4893c4b

…ve/interop/http.ts Co-authored-by: Jan Kotas <jkotas@microsoft.com>

Update src/native/libs/Common/JavaScript/loader/bootstrap.ts

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Co-authored-by: Jan Kotas <jkotas@microsoft.com>

Copilot started reviewing on behalf of pavelsavara February 23, 2026 10:15 View session

pavelsavara and others added 6 commits February 23, 2026 11:16

Update src/mono/browser/runtime/loader/polyfills.ts

f0db4ec

Co-authored-by: Jan Kotas <jkotas@microsoft.com>

Update src/mono/browser/runtime/web-socket.ts

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Co-authored-by: Jan Kotas <jkotas@microsoft.com>

Update src/native/libs/System.Runtime.InteropServices.JavaScript.Nati…

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…ve/interop/web-socket.ts Co-authored-by: Jan Kotas <jkotas@microsoft.com>

Merge branch 'main' into v8_testing

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Merge branch 'v8_testing' of https://github.com/pavelsavara/runtime i…

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…nto v8_testing

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fix tests

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pavelsavara merged commit cb26605 into dotnet:main Feb 23, 2026
178 of 185 checks passed

pavelsavara deleted the v8_testing branch February 23, 2026 15:24

github-project-automation bot moved this to Done in Runtime Infra Feb 23, 2026

dotnet-maestro bot mentioned this pull request Feb 24, 2026

[main] Source code updates from dotnet/runtime dotnet/dotnet#5050

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