test: add test for getServerLogs()

Author: danielroe

examples/app-vitest/server/api/log-test.get.ts

@@ -0,0 +1,4 @@
+export default defineEventHandler(() => {
+  console.log('[test] server-log-marker')
+  return { ok: true }
+})

examples/app-vitest/test/server-logs.e2e.spec.ts

@@ -0,0 +1,26 @@
+import { fileURLToPath } from 'node:url'
+import { $fetch, clearServerLogs, getServerLogs, setup } from '@nuxt/test-utils/e2e'
+import { describe, expect, it, vi } from 'vitest'
+
+await setup({
+  rootDir: fileURLToPath(new URL('../', import.meta.url)),
+})
+
+describe('server log capture', () => {
+  it('captures console.log output from a server route', async () => {
+    clearServerLogs()
+    await $fetch('/api/log-test')
+    await vi.waitFor(() => {
+      expect(getServerLogs().some(line => line.includes('[test] server-log-marker'))).toBe(true)
+    })
+  })
+
+  it('clearServerLogs empties the buffer', async () => {
+    await $fetch('/api/log-test')
+    await vi.waitFor(() => {
+      expect(getServerLogs().length).toBeGreaterThan(0)
+    })
+    clearServerLogs()
+    expect(getServerLogs()).toHaveLength(0)
+  })
+})