chore: Warning of searchConfig when limit is negative

Author: zombieJ

src/hooks/useSearchConfig.ts

@@ -1,4 +1,5 @@
 import * as React from 'react';
+import warning from 'rc-util/lib/warning';
 import type { ShowSearchType } from '../interface';
 import type { CascaderProps } from '../Cascader';
 
@@ -21,6 +22,10 @@ export default function useSearchConfig(showSearch?: CascaderProps['showSearch']
       };
     }
 
+    if (process.env.NODE_ENV !== 'production' && searchConfig.limit <= 0) {
+      warning(false, "'limit' of showSearch should be positive number or false.");
+    }
+
     return [true, searchConfig];
   }, [showSearch]);
 }

tests/search.spec.tsx

@@ -2,6 +2,7 @@
 
 import React from 'react';
 import KeyCode from 'rc-util/lib/KeyCode';
+import { resetWarned } from 'rc-util/lib/warning';
 import { mount, ReactWrapper } from './enzyme';
 import Cascader from '../src';
 
@@ -155,4 +156,17 @@ describe('Cascader.Search', () => {
     doSearch(wrapper, 'not exist');
     expect(wrapper.exists('.rc-cascader-menu-empty')).toBeTruthy();
   });
+
+  it('warning of negative limit', () => {
+    resetWarned();
+    const errorSpy = jest.spyOn(console, 'error').mockImplementation(() => {});
+
+    mount(<Cascader showSearch={{ limit: 0 }} />);
+
+    expect(errorSpy).toHaveBeenCalledWith(
+      "Warning: 'limit' of showSearch should be positive number or false.",
+    );
+
+    errorSpy.mockRestore();
+  });
 });