feat(module): add support for vue using unplugin (#2416)

Co-authored-by: Benjamin Canac <canacb1@gmail.com>

vitest.vue.config.ts

@@ -0,0 +1,55 @@
+import vue from '@vitejs/plugin-vue'
+import ui from './src/vite'
+import { defineConfig } from 'vitest/config'
+import { glob } from 'tinyglobby'
+import { resolve } from 'pathe'
+
+const components = await glob('./src/runtime/components/*.vue', { absolute: true })
+const vueComponents = await glob('./src/runtime/vue/components/*.vue', { absolute: true })
+
+export default defineConfig({
+  test: {
+    environment: 'happy-dom',
+    include: ['./test/components/**.spec.ts'],
+    setupFiles: ['./test/utils/setup.ts'],
+    resolveSnapshotPath(path, extension) {
+      return path.replace(/\/([^/]+)\.spec\.ts$/, `/__snapshots__/$1-vue.spec.ts${extension}`)
+    }
+  },
+  plugins: [
+    vue(),
+    ui({ dts: false }),
+    {
+      name: 'nuxt-ui-test:components',
+      enforce: 'pre',
+      resolveId(id) {
+        if (id === '@nuxt/test-utils/runtime') {
+          return resolve('./test/utils/mount')
+        }
+      }
+    },
+    {
+      name: 'nuxt-ui-test:components',
+      enforce: 'pre',
+      resolveId(id) {
+        if (id === '#components') {
+          return '#components'
+        }
+      },
+      load(id) {
+        if (id === '#components' || id === '?#components') {
+          const resolvedComponents = [...vueComponents, ...components]
+          const renderedComponents = new Set<string>()
+          return resolvedComponents.map((file) => {
+            const componentName = file.split('/').pop()!.replace('.vue', '')
+            if (renderedComponents.has(componentName)) {
+              return ''
+            }
+            renderedComponents.add(componentName)
+            return `export { default as U${componentName} } from '${file}'`
+          }).join('\n')
+        }
+      }
+    }
+  ]
+})