fix(components): [form] label-position props default value (#7838)

packages/components/form/__tests__/form.test.tsx

@@ -210,6 +210,14 @@ describe('Form', () => {
                 <Input v-model={form.address} />
               </FormItem>
             </Form>
+            <Form model={form} ref="labelRight">
+              <FormItem>
+                <Input v-model={form.name} />
+              </FormItem>
+              <FormItem>
+                <Input v-model={form.address} />
+              </FormItem>
+            </Form>
           </div>
         )
       },
@@ -220,6 +228,9 @@ describe('Form', () => {
     expect(wrapper.findComponent({ ref: 'labelLeft' }).classes()).toContain(
       'el-form--label-left'
     )
+    expect(wrapper.findComponent({ ref: 'labelRight' }).classes()).toContain(
+      'el-form--label-right'
+    )
   })
 
   it('label size', () => {

packages/components/form/src/form.ts

@@ -16,7 +16,11 @@ export const formProps = buildProps({
   rules: {
     type: definePropType<FormRules>(Object),
   },
-  labelPosition: String,
+  labelPosition: {
+    type: String,
+    values: ['left', 'right', 'top'] as const,
+    default: 'right',
+  },
   labelWidth: {
     type: [String, Number],
     default: '',