Function testRender

packages/server-renderer/__tests__/render.spec.ts:68–1251

(type: string, render: typeof renderToString)

testRender(`pipeToNodeWritable`, pipeToWritable)

function testRender(type: string, render: typeof renderToString) {
  describe(`ssr: ${type}`, () => {
    test('should apply app context', async () => {
      const app = createApp({
        render() {
          const Foo = resolveComponent('foo') as ComponentOptions
          return h(Foo)
        },
      })
      app.component('foo', {
        render: () => h('div', 'foo'),
      })
      const html = await render(app)
      expect(html).toBe(`<div>foo</div>`)
    })

    test('warnings should be suppressed by app.config.warnHandler', async () => {
      const app = createApp({
        render() {
          return h('div', this.foo)
        },
      })
      app.config.warnHandler = vi.fn()
      await render(app)
      expect('not defined on instance').not.toHaveBeenWarned()
      expect(app.config.warnHandler).toHaveBeenCalledTimes(1)
    })

    describe('components', () => {
      test('vnode components', async () => {
        expect(
          await render(
            createApp({
              data() {
                return { msg: 'hello' }
              },
              render(this: any) {
                return h('div', this.msg)
              },
            }),
          ),
        ).toBe(`<div>hello</div>`)
      })

      test('option components returning render from setup', async () => {
        expect(
          await render(
            createApp({
              setup() {
                const msg = ref('hello')
                return () => h('div', msg.value)
              },
            }),
          ),
        ).toBe(`<div>hello</div>`)
      })

      test('setup components returning render from setup', async () => {