补充button为空测试用例

pages/component/button/button.test.js

@@ -86,4 +86,11 @@ describe('Button.uvue', () => {
     const value = await page.callMethod('checkUniButtonElement')
     expect(value).toBe(true)
   })
+  it("setbuttonEmpty", async () => {
+    const textBtn = await page.$('.btn')
+    await page.setData({
+      text: '',
+    })
+    expect(await textBtn.text()).toEqual('')
+  })
 })

pages/component/button/buttonstatus.uvue

@@ -136,7 +136,7 @@
        </view>
        <view class="content">
           <button style="margin: 10px;" type="primary" size="default" :disabled="disabled_boolean">uni-app x</button>
-          <button style="margin: 10px;" type="primary" @tap="change_disabled_boolean(!disabled_boolean)">修改disabled为{{disabled_boolean}}</button>
+          <button style="margin: 10px;" type="primary" @tap="change_disabled_boolean(!disabled_boolean)">修改disabled为{{!disabled_boolean}}</button>
        </view>
   </view>
 </template>