在无头模式下使用 Chrome 驱动程序配置时，在 WebDriverSampler 脚本中遇到预期条件失败错误

Question

I have the following code:

When I run it I face with the followings:

2020-07-08 12:47:49,053 ERROR c.gjpwsWebDriverSampler: Expected condition failed: waiting for presence of element located by: By.name: identifier (tried for 15 second(s) with 500 milliseconds interval)

2020-07-08 12:47:49,084 INFO oajtJMeterThread: Thread is done:Browser 1-1

2020-07-08 12:47:49,084 INFO oajtJMeterThread: Thread finished: Browser 1-1

2020-07-08 12:47:49,663 INFO oajeStandardJMeterEngine: Notifying test listeners of end of test

2020-07-08 12:47:49,664 INFO oajguJMeterMenuBar: setRunning(false, local )

Can anyone help me out with this error?

Answer 1

When I open your https://somatus-dev-uat.azurewebsites.net URL I'm getting the following page:

which doesn't contain any element with the name attribute of identifier , most probably this is the reason for your test failure.

So before running your test in headless mode make sure that it's running fine in GUI mode.

If this is something you cannot do for any reason, consider taking a screenshot in case of failure, something like:

var exception = null
try
{
    wait.until(pkg.ExpectedConditions.presenceOfElementLocated(pkg.By.name('identifier')))
}
catch (err)
{
    WDS.log.error(err.message)
    var screenshot = WDS.browser.getScreenshotAs(pkg.OutputType.FILE)
    screenshot.renameTo(new java.io.File('screenshot.png'))
    exception = err
}
finally
{
    throw (exception)
}

More information: The WebDriver Sampler: Your Top 10 Questions Answered