pages are not covered in nuxt environment

[BirgitPohl]

Environment

"@nuxt/test-utils": "^3.19.2",
"vitest": "^3.2.3"

--

• Operating System: Windows_NT
• Node Version: v22.16.0
• Nuxt Version: 3.17.6
• CLI Version: 3.25.1
• Nitro Version: 2.11.13
• Package Manager: npm@10.9.2
• Builder: -
• User Config: runtimeConfig, ssr, alias, compatibilityDate, devtools, css, vite, modules
• Runtime Modules: @nuxt/test-utils/module@3.19.2, @pinia/nuxt@0.11.1
• Build Modules: -

Reproduction

Similar to here.
Ist about the nuxt environment.
I changed it from happy-dom to nuxt. Since then it is not coverging pages.
The Stackoverflow user had a much simpler set up without projects.

import {
  defineVitestConfig,
  defineVitestProject,
} from "@nuxt/test-utils/config";
import vue from "@vitejs/plugin-vue";
import AutoImport from "unplugin-auto-import/vite";
import { configDefaults, defineConfig } from "vitest/config";

// 1️⃣ Nuxt-specific setup via defineVitestConfig
const nuxtConfig = defineVitestConfig({
  test: {
    environment: "nuxt",
    globals: true,
  },
});

// 2️⃣ Full Vitest config using core defineConfig
export default defineConfig({
  ...nuxtConfig,
  test: {
    coverage: {
      provider: "v8",
      reporter: ["text", "json", "html"],
      reportsDirectory: "./tests/coverage",
      exclude: [
        ...(configDefaults.coverage?.exclude ?? []),
        "**/*.cy.ts",
        "**/*.cy.tsx",
        "**/cypress/**",
        "nuxt.config.ts",
        "scripts/**",
      ],
      thresholds: { statements: 90, branches: 90, functions: 0, lines: 90 },
    },

    projects: [
      {
        test: {
          name: "Server (Node Environment)",
          include: ["tests/server/**/*.{test,spec}.ts"],
          globals: true,
          environment: "node",
        },
        plugins: [vue(), AutoImport({ imports: ["vue"], dts: true })],
      },
      await defineVitestProject({
        test: {
          name: "Happy NUXT Environment",
          include: [
            "tests/pages/**/*.{test,spec}.ts",
            "tests/components/**/*.{test,spec}.ts",
            "tests/composables/**/*.{test,spec}.ts",
            "tests/utils/**/*.{test,spec}.ts",
            "tests/plugins/**/*.{test,spec}.ts",
            "tests/layouts/**/*.{test,spec}.ts",
            "tests/directives/**/*.{test,spec}.ts",
            "tests/mixins/**/*.{test,spec}.ts",
            "tests/app.test.ts",
            "Tests/error.test.ts",
          ],
          exclude: ["tests/server/*.{test,spec}.ts"],
          globals: true,
          environment: "nuxt",
          setupFiles: ["./tests/setup.ts"],
        },
      }),
    ],
  },
});

Describe the bug

nuxt environment doesn't create coverage for pages

Additional context

I tried additionally and explicitly adding pages to includes. But it doesn't work.
Please, tag me, if it requires to be opened up in a different repository, such as vitest.

Logs