Repro all regressions to fix before 2.0

src/components/ParentComponent.vue

@@ -0,0 +1,7 @@
+<template>
+  <div class="parent">
+    <div>child</div>
+    <div>child</div>
+    <div>child</div>
+  </div>
+</template>

tests/components/LastUpdated.vue

@@ -0,0 +1,12 @@
+<template>
+  <div class="last-updated" v-if="when">
+    Last update: <span>{{ when }}</span>
+  </div>
+</template>
+
+<script>
+export default {
+  name: 'last-updated',
+  props: ['when']
+}
+</script>

tests/components/ParentComponent.vue

@@ -0,0 +1,7 @@
+<template>
+  <div class="parent">
+    <div>child</div>
+    <div>child</div>
+    <div>child</div>
+  </div>
+</template>

tests/features/suspense.spec.ts

@@ -1,5 +1,6 @@
 import SuspenseComponent from '../components/Suspense.vue'
 import { mount, flushPromises } from '../../src'
+import { defineComponent } from '@vue/compat'
 
 let mockShouldError = false
 jest.mock('../utils', () => ({
@@ -32,4 +33,20 @@ describe('suspense', () => {
 
     expect(wrapper.html()).toContain('Error!')
   })
+
+  test('returns the element if it is a root element inside Suspense', () => {
+    const Async = defineComponent({
+      // works if there is a root element
+      // template: '<div><h1>Hello</h1><span id="my-span">There</span></div>'
+      // otherwise does not find the element
+      template: '<h1>Hello</h1><span id="my-span">There</span>'
+    })
+    const Component = defineComponent({
+      components: { Async },
+      template: '<Suspense><Async/></Suspense>'
+    })
+
+    const wrapper = mount(Component)
+    expect(wrapper.get('#my-span')).not.toBeNull()
+  })
 })

tests/find.spec.ts

@@ -2,6 +2,7 @@ import { defineComponent, h, nextTick, Fragment } from 'vue'
 
 import { mount, VueWrapper } from '../src'
 import SuspenseComponent from './components/Suspense.vue'
+import ParentComponent from './compodefineComponentponent.vue'
 import MultipleRootRender from './components/MultipleRootRender.vue'
 
 describe('find', () => {
@@ -347,4 +348,13 @@ describe('findAll', () => {
       expect(wrapper.findAll('a')).toHaveLength(3)
     })
   })
+
+  // https://github.com/vuejs/test-utils/issues/1233
+  it('finds 3 children', () => {
+    const wrapper = mount(ParentComponent)
+
+    const parent = wrapper.get('.parent')
+
+    expect(parent.findAll('div').length).toBe(3)
+  })
 })

tests/unmount.spec.ts

@@ -1,4 +1,5 @@
 import { defineComponent } from 'vue'
+import LastUpdated from './components/LastUpdated.vue'
 
 import { mount } from '../src'
 
@@ -41,4 +42,20 @@ describe('Unmount', () => {
     wrapper.unmount()
     expect(errorHandler).not.toHaveBeenCalled()
   })
+
+  it("The LastUpdated component renders the 'when' property", async () => {
+    const wrapper = mount(LastUpdated, { props: { when: 'today' } })
+
+    await wrapper.vm.$nextTick()
+    expect(wrapper.html()).toContain('<span>today</span>')
+    wrapper.unmount()
+  })
+
+  it("The LastUpdated component doesn't render when 'when' is undefined", async () => {
+    const wrapper = mount(LastUpdated, { props: { when: undefined } })
+
+    await wrapper.vm.$nextTick()
+    expect(wrapper.html()).not.toContain('<span>today</span>')
+    wrapper.unmount()
+  })
 })