feat: 新增 YYDS Mail 邮箱服务端点

tests/mail-provider-utils.test.js

@@ -3,6 +3,7 @@ const assert = require('node:assert/strict');
 
 const {
   HOTMAIL_PROVIDER,
+  YYDS_MAIL_PROVIDER,
   getIcloudForwardMailConfig,
   getIcloudForwardMailProviderOptions,
   getMailProviderConfig,
@@ -14,6 +15,7 @@ const {
 test('normalizeMailProvider accepts 126 and falls back to 163', () => {
   assert.equal(normalizeMailProvider('126'), '126');
   assert.equal(normalizeMailProvider('163-vip'), '163-vip');
+  assert.equal(normalizeMailProvider(YYDS_MAIL_PROVIDER), YYDS_MAIL_PROVIDER);
   assert.equal(normalizeMailProvider('unknown-provider'), '163');
 });
 
@@ -38,6 +40,16 @@ test('getMailProviderConfig preserves the hotmail provider sentinel', () => {
   );
 });
 
+test('getMailProviderConfig preserves the YYDS Mail provider sentinel', () => {
+  assert.deepEqual(
+    getMailProviderConfig({ mailProvider: YYDS_MAIL_PROVIDER }),
+    {
+      provider: YYDS_MAIL_PROVIDER,
+      label: 'YYDS Mail',
+    }
+  );
+});
+
 test('iCloud forward mailbox helpers normalize and expose supported providers', () => {
   assert.equal(normalizeIcloudTargetMailboxType('forward-mailbox'), 'forward-mailbox');
   assert.equal(normalizeIcloudTargetMailboxType('unknown'), 'icloud-inbox');