chore: add basic testing setup

.github/workflows/test.yml

@@ -0,0 +1,17 @@
+name: Test
+on:
+  push:
+    branches: [main]
+  pull_request:
+    branches: [main]
+jobs:
+  build:
+    name: Test
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+      - uses: pnpm/action-setup@v3
+        with:
+          version: latest
+      - run: pnpm i --frozen-lockfile
+      - run: pnpm run test

package.json

@@ -37,9 +37,10 @@
 		"package": "svelte-kit sync && svelte-package && publint",
 		"prepublishOnly": "npm run package",
 		"preview": "vite preview",
-		"test": "npm run test:integration && npm run test:unit",
+		"test": "npm run test:unit",
 		"test:integration": "playwright test",
-		"test:unit": "vitest"
+		"test:unit": "vitest",
+		"test:unit:ui": "vitest --ui"
 	},
 	"dependencies": {
 		"acorn": "^8.11.3",
@@ -52,12 +53,16 @@
 		"@sveltejs/kit": "^2.5.3",
 		"@sveltejs/package": "^2.3.0",
 		"@sveltejs/vite-plugin-svelte": "^3.0.2",
+		"@testing-library/jest-dom": "^6.4.2",
+		"@testing-library/svelte": "^4.1.0",
 		"@types/eslint": "8.56.6",
 		"@typescript-eslint/eslint-plugin": "^7.0.0",
 		"@typescript-eslint/parser": "^7.0.0",
+		"@vitest/ui": "^1.4.0",
 		"eslint": "^8.57.0",
 		"eslint-config-prettier": "^9.1.0",
 		"eslint-plugin-svelte": "^2.35.1",
+		"happy-dom": "^14.3.9",
 		"prettier": "^3.2.5",
 		"prettier-plugin-svelte": "^3.2.2",
 		"publint": "^0.2.7",