refactor(frontend): split large reimbursement and audit modules

web/tests/backend-health-timeout.test.mjs

@@ -0,0 +1,43 @@
+import assert from 'node:assert/strict'
+import { readFileSync } from 'node:fs'
+import test from 'node:test'
+import { fileURLToPath } from 'node:url'
+
+import { checkBackendHealth, useBackendHealth } from '../src/composables/useBackendHealth.js'
+
+const routerScript = readFileSync(
+  fileURLToPath(new URL('../src/router/index.js', import.meta.url)),
+  'utf8'
+)
+
+test('app route guard allows stale healthy state when health check times out', () => {
+  assert.match(routerScript, /checkBackendHealth\(\{\s*allowStaleOnTimeout:\s*true\s*\}\)/)
+})
+
+test('backend health timeout does not block app rendering when stale fallback is allowed', async () => {
+  const originalFetch = global.fetch
+
+  global.fetch = async (_url, options = {}) =>
+    new Promise((_, reject) => {
+      options.signal.addEventListener('abort', () => {
+        const error = new Error('aborted')
+        error.name = 'AbortError'
+        reject(error)
+      })
+    })
+
+  try {
+    const ok = await checkBackendHealth({
+      force: true,
+      allowStaleOnTimeout: true,
+      timeoutMs: 1
+    })
+    const { backendHealthy, backendError } = useBackendHealth()
+
+    assert.equal(ok, true)
+    assert.equal(backendHealthy.value, true)
+    assert.match(backendError.value, /健康检查超时|health/i)
+  } finally {
+    global.fetch = originalFetch
+  }
+})