fix(Pagination): change event not work (#10018)

* fix(Pagination): change event not work

* chore: update pnpm lock

packages/vant/src/pagination/Pagination.tsx

@@ -135,7 +135,7 @@ export default defineComponent({
           <button
             type="button"
             disabled={disabled}
-            onClick={() => updateModelValue(modelValue - 1)}
+            onClick={() => updateModelValue(modelValue - 1, true)}
           >
             {slot ? slot() : props.prevText || t('prev')}
           </button>
@@ -157,7 +157,7 @@ export default defineComponent({
           <button
             type="button"
             disabled={disabled}
-            onClick={() => updateModelValue(modelValue + 1)}
+            onClick={() => updateModelValue(modelValue + 1, true)}
           >
             {slot ? slot() : props.nextText || t('next')}
           </button>
@@ -176,7 +176,7 @@ export default defineComponent({
           <button
             type="button"
             aria-current={page.active || undefined}
-            onClick={() => updateModelValue(page.number)}
+            onClick={() => updateModelValue(page.number, true)}
           >
             {slots.page ? slots.page(page) : page.text}
           </button>

packages/vant/src/pagination/test/index.spec.ts

@@ -29,3 +29,26 @@ test('should render page slot correctly', () => {
 
   expect(wrapper.html()).toMatchSnapshot();
 });
+
+test('should emit change event after the page is changed', async () => {
+  const wrapper = mount(Pagination, {
+    props: {
+      modelValue: 1,
+      totalItems: 50,
+      'onUpdate:modelValue': (modelValue: number) => {
+        wrapper.setProps({ modelValue });
+      },
+    },
+  });
+
+  await wrapper
+    .findAll('.van-pagination__item--page button')[2]
+    .trigger('click');
+  expect(wrapper.emitted('change')).toEqual([[3]]);
+
+  await wrapper.find('.van-pagination__item--prev button').trigger('click');
+  expect(wrapper.emitted('change')).toEqual([[3], [2]]);
+
+  await wrapper.find('.van-pagination__item--next button').trigger('click');
+  expect(wrapper.emitted('change')).toEqual([[3], [2], [3]]);
+});