如何修改Selenium JavaScript中executeScript的脚本超时时间

问题 #

使用Selenium WebDriver JavaScript的executeScript执行长耗时脚本时，默认15秒会抛出ScriptTimeoutError，找不到JS库对应的配置说明，复现代码如下：

const { Builder, By, Key } = require("selenium-webdriver");

async function example() {
  let driver = await new Builder().forBrowser("chrome").build();

  await driver.get("https://google.com");

  await driver.executeScript(`
  
  await new Promise((resolve) => setTimeout(resolve, 30000));
  
  `);
  console.log("DONE!");
}

example();

报错信息：

ScriptTimeoutError: script timeout
  (Session info: chrome=118.0.5993.118)
    at Object.throwDecodedError (c:\Users\Admin\Documents\selenium scripts\seleniumDemo\node_modules\selenium-webdriver\lib\error.js:524:15)
    at parseHttpResponse (c:\Users\Admin\Documents\selenium scripts\seleniumDemo\node_modules\selenium-webdriver\lib\http.js:601:13)
    at Executor.execute (c:\Users\Admin\Documents\selenium scripts\seleniumDemo\node_modules\selenium-webdriver\lib\http.js:529:28)
    at process.processTicksAndRejections (node:internal/process/task_queues:95:5)
    at async Driver.execute (c:\Users\Admin\Documents\selenium scripts\seleniumDemo\node_modules\selenium-webdriver\lib\webdriver.js:745:17)
    at async example (c:\Users\Admin\Documents\selenium scripts\seleniumDemo\tests\test 4.js:8:3) {
  remoteStacktrace: '\tGetHandleVerifier [0x00007FF705638EF2+54786]\n' +

解决方法 #

通过driver.manage().setTimeouts()方法设置脚本超时时间，传入包含script字段的对象，值为超时毫秒数。

修改后的代码示例 #

const { Builder, By, Key } = require("selenium-webdriver");

async function example() {
  let driver = await new Builder().forBrowser("chrome").build();
  
  // 设置脚本超时为35秒（35000毫秒），需大于脚本实际运行时间
  await driver.manage().setTimeouts({ script: 35000 });

  await driver.get("https://google.com");

  await driver.executeScript(`
    await new Promise((resolve) => setTimeout(resolve, 30000));
  `);
  console.log("DONE!");
}

example();

说明 #

• Selenium JS默认脚本超时为15000毫秒（15秒），通过setTimeouts的script参数可以自定义超时时长
• 设置的超时时间需略长于executeScript中脚本的实际运行时间，避免触发超时错误

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