scripts: add run-wasm-tests.ps1 to configure LLVM toolchain and run wasm tests

scripts/run-wasm-tests.ps1

@@ -0,0 +1,58 @@
+$ErrorActionPreference = "Stop"
+
+function Set-WasmToolchainEnv {
+    param()
+    $clang = $env:CC
+    if (-not $clang -or -not (Test-Path $clang)) {
+        $defaultClang = "C:\\Program Files\\LLVM\\bin\\clang.exe"
+        if (Test-Path $defaultClang) {
+            $clang = $defaultClang
+        } else {
+            $cmd = Get-Command clang.exe -ErrorAction SilentlyContinue
+            if ($cmd) { $clang = $cmd.Path }
+        }
+    }
+    if (-not $clang) { throw "Clang introuvable. Installez LLVM/Clang et relancez." }
+
+    $env:CC = $clang
+    $llvmBin = Split-Path $clang -Parent
+    $env:AR = Join-Path $llvmBin "llvm-ar.exe"
+    $env:NM = Join-Path $llvmBin "llvm-nm.exe"
+
+    $env:TARGET_CC = $env:CC
+    $env:CC_wasm32_unknown_unknown = $env:CC
+    $env:AR_wasm32_unknown_unknown = $env:AR
+    $env:NM_wasm32_unknown_unknown = $env:NM
+    $env:CC_wasm32-unknown-unknown = $env:CC
+    $env:AR_wasm32-unknown-unknown = $env:AR
+    $env:NM_wasm32-unknown-unknown = $env:NM
+}
+
+function Invoke-WasmPackTests {
+    param(
+        [switch]$Chrome,
+        [switch]$Firefox,
+        [switch]$Node
+    )
+    if ($Chrome) { wasm-pack test --headless --chrome }
+    if ($Firefox) { wasm-pack test --headless --firefox }
+    if ($Node) { wasm-pack test --node }
+}
+
+$scriptsDir = Split-Path -Parent $MyInvocation.MyCommand.Path
+$repoRoot = Split-Path -Parent $scriptsDir
+Push-Location $repoRoot
+try {
+    Set-WasmToolchainEnv
+    cargo clean --target wasm32-unknown-unknown | Out-Null
+    try {
+        Invoke-WasmPackTests -Chrome -Firefox
+    } catch {
+        Write-Warning "Tests headless navigateur échoués, tentative avec Node."
+        Invoke-WasmPackTests -Node
+    }
+} finally {
+    Pop-Location
+}
+
+