Question

我正在学习Protractor（以及扩展名，Protractor使用的Jasmine），由于某种原因，我需要等待Promise继续测试。但是，我不知道该怎么做。

让我们从Protractor教程中获取代码并添加一些代码，让我们添加一个不做任何事情的简单Promise（ES6风格）

describe('angularjs homepage todo list', function() {
  it('should add a todo', function() {
    browser.get('https://angularjs.org');

    element(by.model('todoList.todoText')).sendKeys('write first protractor test');
    element(by.css('[value="add"]')).click();

    var todoList = element.all(by.repeater('todo in todoList.todos'));

    Promise.resolve().then( () => {
      expect(todoList.count()).toEqual(3);
      expect(todoList.get(2).getText()).toEqual('write first protractor test');

      // You wrote your first test, cross it off the list
      todoList.get(2).element(by.css('input')).click();
      var completedAmount = element.all(by.css('.done-true'));
      expect(completedAmount.count()).toEqual(2);
    });
  });
});

这不起作用，因为这是答案

$ protractor conf.js
Using the selenium server at http://localhost:4444/wd/hub
[launcher] Running 1 instances of WebDriver
F

Failures:

  1) angularjs homepage todo list should add a todo
   Message:
     Error while waiting for Protractor to sync with the page: "angular could not be found on the window"
   Stacktrace:
     undefined

Finished in 0.212 seconds
1 test, 1 assertion, 1 failure

[launcher] 0 instance(s) of WebDriver still running
[launcher] chrome #1 failed 1 test(s)
[launcher] overall: 1 failed spec(s)
[launcher] Process exited with error code 1

我该怎么做才能让它发挥作用？

Answer 1

我通过以下方式解决了这个问题：

首先，使用jasmine2作为框架代替jasemine by writin

framework: 'jasmine2'

到conf.js

像这样编辑文件

var flow = browser.flow()

describe('angularjs homepage todo list', function() {
    it('should add a todo', function() {
    browser.get('https://angularjs.org');

    element(by.model('todoList.todoText')).sendKeys('write first protractor test');
    element(by.css('[value="add"]')).click();

    var todoList = element.all(by.repeater('todo in todoList.todos'));

    flow.execute(function(){Promise.resolve()});
    // or, more ES6-y version
    // flow.execute(() => Promise.resolve());

    expect(todoList.count()).toEqual(3);
    expect(todoList.get(2).getText()).toEqual('write first protractor test');

    // You wrote your first test, cross it off the list
    todoList.get(2).element(by.css('input')).click();
    var completedAmount = element.all(by.css('.done-true'));
    expect(completedAmount.count()).toEqual(2);

  });
});

茉莉花实际上是在一起“链接”一起期待的承诺，这很方便地解决了我的问题。

如何在量角器/茉莉花测试中等待承诺？

1 个答案: