migration to vite/playwright

tests/locale.test.js

@@ -0,0 +1,19 @@
+import { describe, expect, test } from 'vitest'
+import { putLocale, t } from '../src/editor/locale.js'
+
+const goodLangs = ['en', 'fr', 'de']
+
+describe('locale loader', () => {
+  test('falls back to English when lang is not supported', async () => {
+    const result = await putLocale('xx', goodLangs)
+    expect(result.langParam).toBe('en')
+    expect(t('common.ok')).toBe('OK')
+  })
+
+  test('loads explicit test locale bundle', async () => {
+    const result = await putLocale('test', goodLangs)
+    expect(result.langParam).toBe('test')
+    expect(t('common.ok')).toBe('OK')
+    expect(t('misc.powered_by')).toBe('Powered by')
+  })
+})