编码的用户界面：无法捕获通过测试用例的屏幕截图

Question

I am using coded UI platform for automation. If test case fails system automatic take screen shot but once it pass system is not able to capture screenshot of the test case. I am using C# selenium commands in the script.

Environment

• Visual studio premium 2012.

I tried following thing.

1. Enable a log trace in QTAgent32.exe.config ( ).

2. LoggerOverrideState = HtmlLoggerState.AllActionSnapshot; but getting error in LoggerOverrideState.

    [TestMethod] public void demo2() { TestContext.WriteLine("Go to URL\\n"); driver.Navigate().GoToUrl("http://www.test.com/"); driver.Manage().Window.Maximize(); // Enter username TestContext.WriteLine("TestContext Writeline: test context \\n"); js.ExecuteScript("arguments[0].setAttribute('value','username')", driver.FindElement(By.XPath("//*[@id='txtUsername']"))); //Enter password js.ExecuteScript("arguments[0].setAttribute('value','password')", driver.FindElement(By.XPath("//*[@id='txtPassword']"))); // Click on the login Button js.ExecuteScript("arguments[0].click();", driver.FindElement(By.XPath("//*[@id='btLoginNow']"))); 

Answer 1

You could put something like the following in your code to take a screenshot at any given point:

Image SubmissionPic = UITestControl.Desktop.CaptureImage();
SubmissionPic.Save(@"C:\AutomatedScreenShots\SubmissionPage_" + TestContext.DataRow["Division"].ToString() + "_" + DateTime.Now.ToString("yyyy-MM-dd") + ".bmp");

Note: The filename formatting I've used above can be changed to whatever suits your needs. I just pulled this code from a test I'd written a while back.

Answer 2

After every Testcase you can call the Take Screen shot in both the case either Pass or Fail ex. Suppose Test Method to do Successful Login

@Test 
public void ValidUserNamePasswordLoginTest() {
    // Your code to do Assertion
}

Now use @AfterMethod in your call which will execute as soon as your test perform

@AfterMethod
public void takeScreenShot(ITestResult testResult) throws IOException 
{
    if(testResult.getStatus() == ITestResult.SUCCESS)
    {
      File src = ((TakesScreenshot)driver).getScreenshotAs(OutputType.FILE);
      FileUtils.copyFile(src, new File("Screensot\\"+filename+".jpg"));
    }
if(testResult.getStatus() == ITestResult.FAILURE)
    {
          File src = ((TakesScreenshot)driver).getScreenshotAs(OutputType.FILE);
            FileUtils.copyFile(src, new File("Screensot\\"+filename+".jpg"));
    }

}

Answer 3

Couldn't you just use the [TestCleanup] and create a method using that Attribute that will take a screenshot, that way you will always get a Screenshot not matter the result? Is that what you require?

---

So, You could so this on the WebDriver setup:

public static IWebDriver SetUp()
    {
        private static IWebDriver _webDriver;
        firingDriver = new EventFiringWebDriver(new ChromeDriver()); //Or whatever driver you want. You could also use the Activator class and create a Generic instance of a WebDriver. 
        var screenshot = new CustomScreenshot(firingDriver);
        firingDriver.ScriptExecuted += screenshot.TakeScreenshotOnExecute;

        _webDriver = firingDriver;
        return _webDriver;
    }

Then for the screenshot something like:

public class CustomScreenshot
    {
    private IWebDriver _webDriver;
    public CustomScreenshot(IWebDriver webDriver)
    {
        _webDriver = webDriver;
    }

public void TakeScreenshotOnExecute(object sender, WebDriverScriptEventArgs e)
    {
        var filePath = "Where you want to save the file.";
        try
        {
            _webDriver.TakeScreenshot().SaveAsFile(filePath, ImageFormat.Png);
        }
        catch (Exception)
        {
            //DO something
        }
    }
}

Answer 4

The whole issue of taking a screen shot of a browser window & naming it based on unique properties (eg, browser title, date-time stamp, etc) proved to be extremely difficult because of the tool (CodedUI) not what I wanted to do. I won't editorialize concerning my opinion of the functionality (lack of) of this tool but it is definitely not as robust as Selenium. So how I accomplished this was I got a high level 'browser title' from this-> and used the following for taking & storing the screen shot in my MyTestCleanup() method.

    public void MyTestCleanup()
    {
        //Playback.PlaybackSettings.WaitForReadyLevel = WaitForReadyLevel.AllThreads;
        //--------------------------------------------------------------------------------------------
        DateTime time = DateTime.Now;
        this.UIMap
        var ttest = time.Millisecond.ToString();
        var timeSecs = DateTime.Now.Millisecond;
        var Window = this; 
        var ext = ".png";
        Image screen = UITestControl.Desktop.CaptureImage();
        string dirPath = string.Format("C\\:Users\\smaretick\\Desktop\\SCREENS\\{0}{1}", ttest, ext);
        string dirPathN = string.Format("/C copy C:\\Users\\smaretick\\Desktop\\SCREENS\\CUIT.png C:\\Users\\smaretick\\Desktop\\SCREENS\\{0}{1}", ttest, ext);
        string dirPathF = string.Format("/C copy C:\\Users\\smaretick\\Desktop\\SCREENS\\CUIT.png C:\\Users\\smaretick\\Desktop\\SCREENS\\{0}{1}{2}", Window, ttest, ext);
        //string dirPathF = string.Format("/C copy C:\\Users\\smaretick\\Desktop\\SCREENS\\{0}{1}{2}", Window, ttest, ext);
        UITestControl.Desktop.CaptureImage().Save("C:\\Users\\smaretick\\Desktop\\SCREENS\\CUIT.png");
        string cmdF = string.Format("C\\:Users\\smaretick\\Desktop\\SCREENS\\{0}{1}", ttest, ext);
        Process.Start("CMD.exe", dirPathF);
        //--------------------------------------------------------------------------------------------
        LogOut();

contact me if you need any more help (scottmaretick51@gmail.com)