Selenium 屏幕截图参数无效

Question

这是我的硒测试：

    [Test]
    public void RunStepsTest()
    {
        using (var driver = new InternetExplorerDriver())
        {
            driver.Navigate().GoToUrl(Url);
            ExecuteStep(driver, "start");
            ExecuteStep(driver, "step1");
            ExecuteStep(driver, "step2");
            ExecuteStep(driver, "finish");
        }
    }

    private void ExecuteStep(InternetExplorerDriver driver, string stepName)
    {
        var wait = new WebDriverWait(driver, TimeSpan.FromSeconds(10));
        wait.Until(x => ExpectedConditions.ElementIsVisible(By.Id(stepName)));

        var scrrenshot = driver.GetScreenshot();
        scrrenshot.SaveAsFile(Path.Combine(ScreenshotDirectory, stepName + ".jpg"), ScreenshotImageFormat.Jpeg);

        var link = driver.FindElement(By.Id(stepName));
        link.SendKeys(Keys.Enter);
    }

大部分时间此测试在线失败

        scrrenshot.SaveAsFile(Path.Combine(ScreenshotDirectory, stepName + ".jpg"), ScreenshotImageFormat.Jpeg);

有消息 "Paramter is not valid"。我做错了什么？

Answer 1

像这样尝试此代码：

Screenshot ss = ((ITakesScreenshot)driver).GetScreenshot();
ss.SaveAsFile("e:\pande", System.Drawing.Imaging.ImageFormat.Jpeg);

Answer 2

在 Internet Explorer 驱动程序中，它旨在引发此错误。

来自 Github bug tracking :

Because of the limitations of how the IE driver is forced to work in order to take full-DOM screenshots, screenshots are only supported for browser windows viewing HTML documents. This is entirely as intended by the driver (regardless of the behavior of Chrome or Firefox). The driver is forced by the constraints of the IE browser itself. Accordingly, I'm closing this as "working as intended".

如果允许使用其他驱动，可以试试火狐或者Chrome驱动截图。

Selenium 屏幕截图参数无效

Selenium screenshot parameter is not valid

.net

c#

selenium

screenshot