fix: 修复联系人 API 因昵称备注未补全导致搜索结果为空 #51

Fixes https://github.com/Wxw-Gu/TraceMemo/issues/51

tests/unit/contact-search-index.test.ts

@@ -0,0 +1,44 @@
+import { describe, expect, it } from 'vitest'
+import type { Contact } from '../../src/shared/types'
+import { buildContactSearchIndex, filterContactSearchIndex } from '../../src/shared/contact-search'
+
+/**
+ * Issue #51 regression guard for the *shared* search primitives.
+ *
+ * The bug report claims that when one keyword matches a private contact AND a
+ * group chat, the API returns nothing. These tests pin down that multi-match is
+ * itself NOT the problem: the shared index/filter pair already returns every
+ * match. The real defect lived in the data the HTTP layer fed into it.
+ */
+
+const user: Contact = {
+  m_nsUsrName: 'wxid_fixture_user',
+  m_nsNickName: '张三',
+  md5: 'fixture-user-md5',
+  type: 'user',
+  remark: '张三'
+}
+
+const group: Contact = {
+  m_nsUsrName: 'fixture_group@chatroom',
+  m_nsNickName: '张三的测试群',
+  md5: 'fixture-group-md5',
+  type: 'group'
+}
+
+describe('filterContactSearchIndex with a keyword hitting a contact and a group', () => {
+  it('returns both matches instead of collapsing to an empty list', () => {
+    const index = buildContactSearchIndex([user, group])
+    expect(filterContactSearchIndex(index, '张三')).toEqual([user, group])
+  })
+
+  it('still isolates the results with type=user', () => {
+    const index = buildContactSearchIndex([user, group])
+    expect(filterContactSearchIndex(index, '张三', 'user')).toEqual([user])
+  })
+
+  it('still isolates the results with type=group', () => {
+    const index = buildContactSearchIndex([user, group])
+    expect(filterContactSearchIndex(index, '张三', 'group')).toEqual([group])
+  })
+})