World对象

对于每个场景，都有一个独立的上下文叫World, 在hooks和步骤的运行函数中用this来访问. 默认的 World 构造函数是:

JavaScript
function World({attach, parameters}) {
  this.attach = attach
}

  • attach: 用于将附件添加到hooks/步骤的函数

默认的对象可以被setWorldConstructor覆盖.

JavaScript
const { setWorldConstructor } = require('cucumber');
const seleniumWebdriver = require('selenium-webdriver');

function CustomWorld() {
  this.driver = new seleniumWebdriver.Builder()
    .forBrowser('firefox')
    .build();

  // Returns a promise that resolves to the element
  this.waitForElement = function(locator) {
    let condition = seleniumWebdriver.until.elementLocated(locator);
    return this.driver.wait(condition)
  }
}

setWorldConstructor(CustomWorld)

注意: World构造函数在v0.8.0后是严格同步的.

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