add test

Author: thinkasany

tests/index.test.tsx

@@ -251,8 +251,14 @@ describe('Other props', () => {
       />,
     );
     const item = container.querySelector('.rc-pagination-item');
+    const prev = container.querySelector('.rc-pagination-prev');
+    const next = container.querySelector('.rc-pagination-next');
     expect(item).toHaveClass('custom-test');
+    expect(prev).toHaveClass('custom-test');
+    expect(next).toHaveClass('custom-test');
     expect(item).toHaveStyle('color: red');
+    expect(prev).toHaveStyle('color: red');
+    expect(next).toHaveStyle('color: red');
   });
   it('should support custom default icon', () => {
     const nextIcon = () => <span>nextIcon</span>;