如何解决WebDriverIO测试中页面模块导入错误导致的元素调用异常问题

Let's break down what's going wrong here and fix it—your issue isn't actually about module importing, it's about how you're accessing elements in your page object.

The Root Cause #

Looking at your main.pageHW.js, topSignUpBtn is defined as a getter property (using the get keyword), not a method. When you call it with parentheses like mainPage.topSignUpBtn() in your test, you're trying to invoke the Element object returned by the getter as if it were a function. That's why you're getting unexpected output (like a UUID) instead of the element you need.

Solution 1: Use the getter correctly (no parentheses) #

Modify your test code to access the getter property without calling it as a function:

describe('final homeTask', () => {
  it('firstassigment', async () => {
    let mainPage = require('../page/main.pageHW.js')
    await browser.url('https://github.com/')
    // Remove the parentheses after topSignUpBtn
    let signUpButton = await mainPage.topSignUpBtn
    await signUpButton.click()
  })
})

Solution 2: Convert the getter to a method (if you prefer parentheses) #

If you want to keep using parentheses in your test code, adjust the page object to define topSignUpBtn as a regular method instead of a getter:

class MainPage {
  // Remove the `get` keyword and add parentheses to make it a method
  topSignUpBtn() {
    return $('a.btn-mktg:nth-child(1)')
  }
}
module.exports = new MainPage()

Now your original test code with mainPage.topSignUpBtn() will work as expected.

Why Direct Element Access Works #

When you directly use await $('a.btn-mktg:nth-child(1)') in your test, you're correctly fetching the element without any incorrect function calls. The confusion came from mixing up getter properties and methods in your page object.

内容的提问来源于stack exchange，提问作者Krasivyi_User9123