fix: default locale to English

Author: jevin98

entrypoints/devtools-panel/lang.ts

@@ -44,8 +44,8 @@ const messages = {
 
 exportconstactiveLocale=ref<Locale>('en')
 
-exportfunctioninitializeLocale(value: string|null,fallback=browser.i18n.getUILanguage()){
-activeLocale.value=resolveLocale(value??fallback)
+exportfunctioninitializeLocale(value: string|null){
+activeLocale.value=resolveLocale(value)
 }
 
 exportfunctionsetLocale(value: Locale){

tests/unit/lang.test.ts

@@ -0,0 +1,19 @@
+import{describe,expect,it,vi}from'vitest'
+import{fakeBrowser}from'wxt/testing'
+import{activeLocale,initializeLocale}from'../../entrypoints/devtools-panel/lang'
+
+describe('language initialization',()=>{
+it('defaults to English when the user has not selected a language',()=>{
+vi.spyOn(fakeBrowser.i18n,'getUILanguage').mockReturnValue('zh-CN')
+
+initializeLocale(null)
+
+expect(activeLocale.value).toBe('en')
+})
+
+it('uses the saved language when the user has selected one',()=>{
+initializeLocale('zh_CN')
+
+expect(activeLocale.value).toBe('zh_CN')
+})
+})