feat(circular-reference): 补充自动化测试

pages/component-instance/circular-reference/child-c.uvue

 <template>
   <view>
     <text>child-c::{{text}}</text>
-    <child-c v-if="!end" class="child-a-child-b" :text="text" :limit="limit-1"></child-c>
+    <child-c v-if="!end" class="child-c-child-c" :text="text" :limit="limit-1"></child-c>
   </view>
 </template>
 

pages/component-instance/circular-reference/circular-reference.test.js

+const PAGE_PATH = '/pages/component-instance/circular-reference/circular-reference'
+
+describe('circular-reference', () => {
+  let page
+  beforeAll(async () => {
+    page = await program.reLaunch(PAGE_PATH)
+    await page.waitFor(500)
+  })
+
+  it('render', async () => {
+    const child_a = await page.$$('.child-a-child-b')
+    expect(child_a.length).toBe(5)
+
+    const child_b = await page.$$('.child-b-child-a')
+    expect(child_b.length).toBe(5)
+
+    const child_c = await page.$$('.child-c-child-c')
+    expect(child_c.length).toBe(10)
+  })
+})
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