在您指出之前,是的,我知道这似乎是多个问题的重复;
但是,我实施了建议的所有3个修复程序;
jest.setTimeout()
设置异步超时test()
的第三个参数来传递扩展的异步超时限制done
函数但是,当在自动linux机器(Jenkins)上运行我的jest测试时,它仍然抛出相同的错误。另外,值得一提的是,这在运行NodeJS v10的MacOS计算机上运行良好,而自动化linux计算机运行的NodeJS V8.8.3(最新LTS版本)
这就是我开玩笑的样子;
const webdriverio = require('webdriverio');
const options = {
desiredCapabilities: {
browserName: 'chrome',
chromeOptions: {
args: ["--no-sandbox", "disable-web-security", "--disable-dev-shm-usage"]
}
}
};
const client = webdriverio.remote(options);
beforeEach(async () => {
await client.init();
})
test('Google Search for WebdriverIO has correct title', async (done) => {
jest.setTimeout(30000)
await client.url('https://www.google.com/ncr');
await client.setValue('input[name=q]', 'WebdriverIO');
await client.click('input[value="Google Search"]');
const title = await client.getTitle();
expect(title).toBe('WebdriverIO - Google Search');
done();
}, 30000);
afterEach(async () => {
await client.end();
});
这是我尝试运行测试时得到的日志;
09:57:19 > jest --config jest.config.js
09:57:19
09:57:20 Installing selenium server ...
09:57:22 Starting selenium server ...
09:57:23 Selenium server started ...
09:57:29 FAIL jest/test/google.spec.js (5.874s)
09:57:29 ��� Google Search for WebdriverIO has correct title (5016ms)
09:57:29
09:57:29 ��� Google Search for WebdriverIO has correct title
09:57:29
09:57:29 Timeout - Async callback was not invoked within the 5000ms timeout specified by jest.setTimeout.
09:57:29
09:57:29 at mapper (node_modules/jest-jasmine2/build/queue_runner.js:41:52)
09:57:29
09:57:29 ��� Google Search for WebdriverIO has correct title
09:57:29
09:57:29 A session id is required for this command but wasn't found in the response payload
09:57:29
09:57:29 at new RuntimeError (node_modules/webdriverio/build/lib/utils/ErrorHandler.js:143:12)
09:57:29 at RequestHandler.createOptions (node_modules/webdriverio/build/lib/utils/RequestHandler.js:121:23)
09:57:29 at RequestHandler.create (node_modules/webdriverio/build/lib/utils/RequestHandler.js:212:43)
09:57:29 at Object.url (node_modules/webdriverio/build/lib/protocol/url.js:24:32)
09:57:29 at Object.exec (node_modules/webdriverio/build/lib/helpers/safeExecute.js:28:24)
09:57:29 at Object.resolve (node_modules/webdriverio/build/lib/webdriverio.js:191:29)
09:57:29 at lastPromise.then.resolve.call.depth (node_modules/webdriverio/build/lib/webdriverio.js:486:32)
09:57:29 at _fulfilled (node_modules/q/q.js:854:54)
09:57:29 at self.promiseDispatch.done (node_modules/q/q.js:883:30)
09:57:29 at Promise.promise.promiseDispatch (node_modules/q/q.js:816:13)
09:57:29
09:57:29 Test Suites: 1 failed, 1 total
09:57:29 Tests: 1 failed, 1 total
09:57:29 Snapshots: 0 total
09:57:29 Time: 5.988s, estimated 7s
09:57:29 Ran all test suites.
09:57:29 Killing selenium server ...
任何关于为什么它在我的本地计算机上正常运行时可能失败的想法将不胜感激。另外,我尝试在Jest全局设置文件中设置jest.setTimeout
,但是会抛出jest.setTimeout is not a function
;
答案 0 :(得分:2)
我在测试中遇到了类似的情况。我的测试在本地顺利通过,但在 GitHub Actions 上失败了。
我的问题是在本地,已经下载了测试工具(在我的例子中是内存中的 MongoDB。在你的例子中是 chrome 浏览器),但在远程环境中,他们必须先下载。
检查您的 Jenkins 日志以了解您的环境下载 chrome,并且在下载达到 100% 之前测试失败。即使您没有发现,您在问题中发布的日志也暗示了这个方向,因为日志打印出超时设置为 5000ms
,即使您将第一次测试的超时设置为不同的值:
Timeout - Async callback was not invoked within the 5000ms timeout specified by jest.setTimeout.
这告诉我超时的测试部分是测试之前的部分。
要解决这个问题,你需要专门在 beforeEach
函数中添加一个更长的超时时间,在那里你初始化 webdriver。这样,在第一次测试中,当 chrome 正在下载时,您将有足够的时间来完成 chrome 的下载。在接下来的测试中,这应该不是问题,因为 chrome 已经可用。
还建议在 Jenkins 中主动下载 chrome\chromium 浏览器,以便在测试运行开始之前就可以使用。
所以,我建议你试试这个:
const webdriverio = require('webdriverio');
const options = {
desiredCapabilities: {
browserName: 'chrome',
chromeOptions: {
args: ["--no-sandbox", "disable-web-security", "--disable-dev-shm-usage"]
}
}
};
const client = webdriverio.remote(options);
beforeEach(async () => {
await client.init();
}, 30000) // <-- This is what you need. not the timeout in the actual test
test('Google Search for WebdriverIO has correct title', async () => {
jest.setTimeout(30000); // you can keep this if you think is needed,
// but I'm pretty sure it's not
await client.url('https://www.google.com/ncr');
await client.setValue('input[name=q]', 'WebdriverIO');
await client.click('input[value="Google Search"]');
const title = await client.getTitle();
expect(title).toBe('WebdriverIO - Google Search');
});
afterEach(async () => {
await client.end();
});
Here's an example of an old run,失败,因为内存数据库在超时之前没有完成下载。这会导致测试开始,即使数据库尚未准备好使用。
将超时添加到 my beforeEach functions 后,它停止发生。
如果在建议的修复后您仍然面临问题,请随时对此答案发表评论。如果这是正确答案,请不要忘记标记答案:-)