add testing library for svelte

Author: yannbf

code/renderers/svelte/package.json

@@ -63,7 +63,10 @@
   },
   "devDependencies": {
     "@sveltejs/vite-plugin-svelte": "^3.0.1",
+    "@testing-library/jest-dom": "^6.4.1",
+    "@testing-library/svelte": "^4.1.0",
     "expect-type": "^0.15.0",
+    "jsdom": "^24.0.0",
     "svelte": "^5.0.0-next.28",
     "svelte-check": "^3.6.1",
     "typescript": "^5.3.2"

code/renderers/svelte/vitest-setup.ts

@@ -0,0 +1,5 @@
+/**
+ * @vitest-environment jsdom
+ */
+import '@testing-library/svelte/vitest'
+import '@testing-library/jest-dom/vitest'

code/renderers/svelte/vitest.config.ts

@@ -8,6 +8,7 @@ export default defineConfig(
     test: {
       environment: 'jsdom',
       name: __dirname.split(sep).slice(-2).join(posix.sep),
+      // setupFiles: ['./vitest-setup.ts'],
     },
     plugins: [
       // eslint-disable-next-line import/no-unresolved