在夹具挂钩中使用用户代理进行浏览器检测 [英] Browser detection using user agent in fixture hooks

问题描述

我有一些仅在移动浏览器中需要运行的测试.目前，我具有用于检查用户代理的客户端功能.

I have a few tests that only need to be run when in a mobile browser. Currently I have a client function to check the user agent.

const checkMobile = ClientFunction(() => /iPhone|Android/i.test(navigator.userAgent))

然后在测试内部进行访问:

Which I then access inside my tests:

test("Check if mobile", async t => { 
  const isMobile = await checkMobile();
  if (isMobile) {
    await t
    // do the tests
  }
}

我有办法在治具中使用它吗?就像只能在checkMobile是true的情况下运行的灯具一样?因此，我不需要在每个测试中手动重复此检查.我敢肯定，现在有比我现在更聪明的方法了.我尝试在灯具的beforeEach钩子中进行检查，但是对我来说，尝试在变量中共享该结果以传递给测试并没有用.

Is there a way for me to use this in a fixture? Like a fixture which will only run if checkMobile is true? So I don't need to repeat this check in every test manually. I'm sure there's a smarter way to go about it than what I have right now. I tried doing the check in the fixture's beforeEach hook but it didn't work out for me to then try to share the outcome of that in a variable to pass down to the tests.

推荐答案

要共享夹具挂钩中的变量以进行测试，可以使用fixture context

To share a variable from the fixture hook for testing, you can use fixture context http://devexpress.github.io/testcafe/documentation/test-api/test-code-structure.html#sharing-variables-between-fixture-hooks-and-test-code

此外，您可以通过以下方式重新组织测试:

In addition, you can reorganize your test in the following manner:

import { ClientFunction } from 'testcafe';


fixture `test`.page('http://example.com').beforeEach(async t => {
    const isMobile = await checkMobile();

    t.ctx.isMobile = isMobile;
})

const checkMobile = ClientFunction(() => /iPhone|Android/i.test(navigator.userAgent))

function testAndCheck (testName, testFn) {
    const foo = async t => {
        if (t.ctx.isMobile)
            await testFn(t)
        else
            throw new Error('not mobile');
    }

    test(testName, foo);
}

testAndCheck('test1', async t => {
    await t.click('h1');
    await t.click('div');
    await t.click('h1');
})

在这里，我定义了testAndCheck函数，该函数通过对移动设备的附加检查来扩展test函数.

Here I define the testAndCheck function that extends the test function with an additional check for mobile devices.

此外，您可以参考此评论 https://github. com/DevExpress/testcafe/issues/1626#issuecomment-417424558 ，看看还有哪些其他方法可以解决该问题.

In addition, you can refer to this comment https://github.com/DevExpress/testcafe/issues/1626#issuecomment-417424558 to see which other ways exist to overcome the issue.

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