fix: crash when exist options with same value on different levels (#258)

Co-authored-by: Jeff.Yuan <[email protected]>

src/hooks/useSearchOptions.ts

@@ -1,5 +1,6 @@
 import type { DefaultOptionType, ShowSearchType, InternalFieldNames } from '../Cascader';
 import * as React from 'react';
+import { VALUE_SPLIT } from '../utils/commonUtil';
 
 export const SEARCH_MARK = '__rc_cascader_search_mark__';
 
@@ -52,6 +53,9 @@ export default (
                 prefixCls,
                 fieldNames,
               ),
+              [fieldNames.value as 'value']: connectedPathOptions
+                .map(pathOption => pathOption[fieldNames.value])
+                .join(VALUE_SPLIT),
               [SEARCH_MARK]: connectedPathOptions,
             });
           }

tests/search.spec.tsx

@@ -5,6 +5,7 @@ import KeyCode from 'rc-util/lib/KeyCode';
 import { resetWarned } from 'rc-util/lib/warning';
 import { mount, ReactWrapper } from './enzyme';
 import Cascader from '../src';
+import { optionsForActiveMenuItems } from './demoOptions';
 
 describe('Cascader.Search', () => {
   function doSearch(wrapper: ReactWrapper, search: string) {
@@ -190,4 +191,12 @@ describe('Cascader.Search', () => {
     wrapper.find('.rc-cascader-menu-item').first().simulate('mousedown');
     expect(onChange).toHaveBeenCalledWith([['bamboo', 'little', 'fish']], expect.anything());
   });
+
+  it('should not crash when exist options with same value on different levels', () => {
+    const wrapper = mount(<Cascader options={optionsForActiveMenuItems} />);
+
+    doSearch(wrapper, '1');
+    wrapper.find('.rc-cascader-menu-item').first().simulate('click');
+    doSearch(wrapper, '1');
+  });
 });