fixup! test: use page.waitForFunction for HMR testing

haoqunjiang · haoqunjiang · commit eb4c0334a598 · 2019-09-04T15:43:22.000+08:00
diff --git a/packages/@vue/cli-plugin-typescript/__tests__/tsPlugin.helper.js b/packages/@vue/cli-plugin-typescript/__tests__/tsPlugin.helper.js
@@ -20,7 +20,8 @@ exports.assertServe = async (name, options) => {
         project.write(`src/App.vue`, file.replace(msg, `Updated`))
         await nextUpdate() // wait for child stdout update signal
         await page.waitForFunction(selector => {
-          return document.querySelector(selector).textContent.includes('Updated')
+          const el = document.querySelector(selector)
+          return el && el.textContent.includes('Updated')
         }, {}, 'h1')
       }
     )

Original file line number	Diff line number	Diff line change
`@@ -20,7 +20,8 @@ exports.assertServe = async (name, options) => {`
`20`	`20`	project.write(`src/App.vue`, file.replace(msg, `Updated`))
`21`	`21`	`await nextUpdate() // wait for child stdout update signal`
`22`	`22`	`await page.waitForFunction(selector => {`
`23`		`- return document.querySelector(selector).textContent.includes('Updated')`
	`23`	`+ const el = document.querySelector(selector)`
	`24`	`+ return el && el.textContent.includes('Updated')`
`24`	`25`	`}, {}, 'h1')`
`25`	`26`	`}`
`26`	`27`	`)`