Develop Reference

Dependency Resolution Exception

I am doing Unit Testing In my Project.When I try to unit test my method a browser pops up and suddenly gets stopped after that I get a long exception I pasted following.
How to fix this mess as I have no idea whats the cause?
Exception:
https://paste.ubuntu.com/24389202/
BrowseHost Class
public static class BrowserHost
{
public static readonly SelenoHost Instance = new SelenoHost();
public static readonly String RootUrl;
static BrowserHost()
{
Instance.Run("BankingSite", 1468);
RootUrl= Instance.Application.Browser.Url;
}
}
UnitTest Class
namespace BankingSite.FunctionalUITests
{
[TestFixture]
public class LoanApplicationTest
{
[Test]
public void ShouldAcceptLoanApplication()
{
BrowserHost.Instance
.Application.Browser
.Navigate()
.GoToUrl($#"{BrowserHost.RootUrl}\LoanApplication\Apply");
var firstNameBox = BrowserHost.Instance.Application
.Browser
.FindElement(By.Id("FirstName"));
firstNameBox.SendKeys("Gentry");
var lastNameBox = BrowserHost.Instance.
Application.
Browser.
FindElement(By.Id("LastName"));
lastNameBox.SendKeys("Smith");
var ageBox = BrowserHost.Instance
.Application
.Browser
.FindElement(By.Id("Age"));
ageBox.SendKeys("40");
var incomeBox = BrowserHost.Instance
.Application
.Browser
.FindElement(By.Id("AnnualIncome"));
incomeBox.SendKeys("9999999");
Thread.Sleep(10000);
var applyButton = BrowserHost.Instance
.Application
.Browser
.FindElement(By.Id("Applt"));
applyButton.Click();
Thread.Sleep(10000);
var acceptMessageText = BrowserHost.Instance
.Application
.Browser
.FindElement(By.Id("acceptMessage"));
Assert.That(acceptMessageText, Is.EqualTo("Congratulations Gentry - Your Application was accepted!"));
Thread.Sleep(10000);
}
}
Following is the Screen Shot of URL I am browsing directly.

Hard to tell from what you've provided, but there is a clue in the stack trace:
System.TypeInitializationException : The type initializer for 'BankingSite.FunctionalUITests.BrowserHost' threw an exception.
----> Autofac.Core.DependencyResolutionException : An exception was thrown while executing a resolve operation. See the InnerException for details. ---> Not a Number (See inner exception for details.)
----> System.InvalidOperationException : Not a Number
Check the constructor for BankingSite.FunctionalUITests.BrowserHost and see if you can find the line that is causing the error. Apparently it is expecting a numeric value but received something else instead.

Take screenshot

I'm trying to take a screenshot on test failure.
[TearDown]
public void TearDown()
{
var status = TestContext.CurrentContext.Result.Outcome.Status;
var stackTrace = "<pre>" + TestContext.CurrentContext.Result.Message + "</pre>";
var errorMessage = TestContext.CurrentContext.Result.Message;
if (status == NUnit.Framework.Interfaces.TestStatus.Failed)
{
test.Log(LogStatus.Fail, status + errorMessage);
var ScreenShotPath = GetScreenShot.Capture(_webdriverChrome);
test.Log(LogStatus.Fail, "Screen Shot Below: "+test.AddScreenCapture(ScreenShotPath));
}
else if (status == NUnit.Framework.Interfaces.TestStatus.Passed)
{
test.Log(LogStatus.Pass, status + errorMessage);
}
extent.EndTest(test);
_webdriverChrome.Quit();}
and the capture function is
public static string Capture(IWebDriver Webdrievr)
{
string pth = System.Reflection.Assembly.GetCallingAssembly().CodeBase;
string actualPath = pth.Substring(0, pth.LastIndexOf("bin"));
string projectPath = new Uri(actualPath).LocalPath;
Screenshot ss = ((ITakesScreenshot)Webdrievr).GetScreenshot();
string screenshot = ss.AsBase64EncodedString;
byte[] screenshotAsByteArray = ss.AsByteArray;
ss.SaveAsFile(projectPath + "ErrorReportScreenshot\\ErrorScreenshot.jpeg", ScreenshotImageFormat.Jpeg); //use any of the built in image formating
string _fullPathToReturn = projectPath + "ErrorReportScreenshot";
return _fullPathToReturn;
}
I'm getting an error
Result Message:
OpenQA.Selenium.WebDriverException : The HTTP request to the remote WebDriver server for URL http://localhost:56184/session/1aaf976356898c52e5cd57d17d44df15/element timed out after 60 seconds.
----> System.Net.WebException : The operation has timed out
TearDown : OpenQA.Selenium.WebDriverException : The HTTP request to the remote WebDriver server for URL http://localhost:56184/session/1aaf976356898c52e5cd57d17d44df15/screenshot timed out after 60 seconds.
----> System.Net.WebException : The operation has timed out
The thing is that it fails taking the screenshots as long as I'm calling the capture() method from TearDown().
If I'm just calling the capture() by running it within a new test, it works like a charm.
In debugging mode, I can see it fails on this row: Screenshot ss = ((ITakesScreenshot)Webdrievr).GetScreenshot();
what am I missing?
EDIT:
I have watched the ((ITakesScreenshot)Webdrievr) and getting an error:
error CS0103: The name 'Webdrievr' does not exist in the current context
Call Stack:
> Assign_Represnt.dll!Assign_Represnt.GetScreenShot.Capture(OpenQA.Selenium.IWebDriver Webdrievr) Line 22 C#

I found the problem . for some reason the following caused all of this
var options = new ChromeOptions();
options.AddArgument("no-sandbox");
_webdriverChrome = new ChromeDriver(options);
I just used the chromedriver without options and it works now.
_webdriverChrome = new ChromeDriver();

I am having similar issue while trying to take screenshot upon test failure. I get timed out error when I try to take the screenshot on failure condition. It works fine in try block but timed out in catch block. I am not using Chrome options as the solution provided above. Any help would be appreciated.
Below is the method to take screenshot:
public class Logging
{
public static void ErrorScreenshot()
{
//Take the screenshot
Screenshot ssh = ((ITakesScreenshot)Driver.BrowserInstance).GetScreenshot();
//Save the screenshot
ssh.SaveAsFile("C:/Users/", ScreenshotImageFormat.Png);
}
}
This is my test method
public static bool FindElement
{
get
{
try
{
var element = Driver.BrowserInstance.FindElement(By.XPath(" "));
if (element != null)
{
return true;
}
}
catch (Exception ex)
{
Logging.ErrorScreenshot();
Logging.Error("Not able to find element" + ex.ToString());
}
return false;
}
}
when it is not able to find the element it goes to catch block and there Logging.ErrorScreenshot method throws a timed out exception.
Error details below:
OpenQA.Selenium.WebDriverException
HResult=0x80131500
Message=The HTTP request to the remote WebDriver server for URL http://localhost:55418/session/f3dbde1645dd91e453c5823d72199ea9/screenshot timed out after 60 seconds.
Source=WebDriver
StackTrace:
at OpenQA.Selenium.Remote.HttpCommandExecutor.MakeHttpRequest(HttpRequestInfo requestInfo)
at OpenQA.Selenium.Remote.HttpCommandExecutor.Execute(Command commandToExecute)
at OpenQA.Selenium.Remote.DriverServiceCommandExecutor.Execute(Command commandToExecute)
at OpenQA.Selenium.Remote.RemoteWebDriver.Execute(String driverCommandToExecute, Dictionary`2 parameters)
at OpenQA.Selenium.Remote.RemoteWebDriver.GetScreenshot()
at Logging.ErrorScreenshot() in C:\Users\Logging.cs:line 66
at DashboardPage.get_Verifylogin() in C:\Users\DasboardPage.cs:line 65
at Tests() in C:\Users\SmokeTests\Tests.cs:line 33
Inner Exception 1:
WebException: The operation has timed out

Webdriver tests failing due to System.Net.WebException timeout

C#
.Net 4.5
VS 2013
NUnit 3.2.1
Webdriver and Webdriver.Support 2.53
So my issue is I am trying navigating to ebay's sandbox login page and login. This seems simple enough but I am struggling to get the page to fully load before giving me a System.Net.WebException timeout error.
Here is the link I am trying to go to
https://signin.sandbox.ebay.com/
And Here is what my code looks like that is doing this.
var EbaySandboxPage = new EbaySandboxLoginPageModel(Driver);
Driver.Manage().Timeouts().SetPageLoadTimeout(TimeSpan.FromSeconds(200));
Driver.Navigate().GoToUrl(EbaySandboxLoginPageModel.sandboxUrl);
And here is the exception that is getting thrown every time I try this in Firefox.
Test Name: VerifyItemsSold
Test FullName: POMAuctivaTest.TestSuite.PostSaleTestSuite<FirefoxDriver>.VerifyItemsSold
Test Source: c:\git\POMAuctivaTest\POMAuctivaTest.TestSuite\PostSaleTestSuite.cs : line 204
Test Outcome: Failed
Test Duration: 0:00:00.0000001
Result Message:
OneTimeSetUp: OpenQA.Selenium.WebDriverException : The HTTP request to the remote WebDriver server for URL http://localhost:7055/hub/session/80efbcbe-841d-4a53-a422-5e7498a0438b/element timed out after 60 seconds.
----> System.Net.WebException : The operation has timed out
So my question is how to I change the System.Net.WebRequest.Timeout property? I am not using an instance of webrequest. I guess webdriver is but I would imagine there is a way for me to change this value. As you can see I have already upped the SetPageLoadTimeout() value to exceed 2 min. Which in my manual testing has been more than enough.
Here was my attempt at #Buaban's solution although mine was still throwing the exception.
Driver.Manage().Timeouts().SetPageLoadTimeout(TimeSpan.FromSeconds(120));
try
{
Driver.Navigate().GoToUrl(EbaySandboxLoginPageModel.sandboxUrl);
}
catch (WebDriverException)
{
}
EbaySandboxPage.WaitForElementVisible(Driver, EbaySandboxLoginPageModel.usernameFieldSelector);
Here is what the WaitForElementVisible() method looks like.
public void WaitForElementVisible(IWebDriver driver, By element)
{
try
{
WebDriverWait wait = new WebDriverWait(driver, TimeSpan.FromSeconds(90));
wait.Until(ExpectedConditions.ElementIsVisible(element));
}
catch (WebDriverTimeoutException)
{
TakeScreenshot(Driver);
Console.Write("Test failed trying to wait for this element " + element.ToString() + " to be visible ");
}
}
Here is the definition of the usernameFieldSelector
public static By usernameFieldSelector = By.CssSelector("#userid");

So thank your #Florent and #Buaban, with your help I was able to figure out a solution to this. Ill post it here but award the answer to your Buaban as I am not sure I would have been able to get to this as quickly without your help.
Driver.Manage().Timeouts().SetPageLoadTimeout(TimeSpan.FromSeconds(30));
try
{
Driver.Navigate().GoToUrl(#"https://signin.sandbox.ebay.com/");
}
catch (Exception)
{
System.Diagnostics.Debug.WriteLine("Some resources are dead!");
}
var attempts = 0;
while (attempts < 2)
{
try
{
IWait<IWebDriver> wait = new DefaultWait<IWebDriver>(Driver);
wait.Timeout = TimeSpan.FromSeconds(20);
wait.PollingInterval = TimeSpan.FromMilliseconds(300);
wait.Until(d => d.FindElements(By.XPath("//span[text()='SIGN IN']")).Count > 0);
break;
}
catch (WebDriverException)
{
attempts++;
}
}

As Florent B. mentioned in comment, some page resources are dead. You have to ignore the exception then wait for an element on the page. See example below:
Driver.Manage().Timeouts().SetPageLoadTimeout(TimeSpan.FromSeconds(30));
try
{
Driver.Navigate().GoToUrl(#"https://signin.sandbox.ebay.com/");
}
catch (Exception)
{
System.Diagnostics.Debug.WriteLine("Some resources are dead!");
}
IWait<IWebDriver> wait = new DefaultWait<IWebDriver>(Driver);
wait.Timeout = TimeSpan.FromSeconds(10);
wait.PollingInterval = TimeSpan.FromMilliseconds(300);
wait.Until(d => d.FindElements(By.XPath("//span[text()='SIGN IN']")).Count > 0);
System.Diagnostics.Debug.WriteLine("SIGN IN textbox is loaded");

Invalid Operation Exception in C# Unit Test using Protractor

I have a simple test class like this:
public class MyTest
{
const string URL = "https://example.com/content/mypage.aspx";
IWebDriver driver;
NgWebDriver ngDriver;
[SetUp]
public void Setup()
{
driver = new ChromeDriver();
driver.Manage().Timeouts().SetScriptTimeout(TimeSpan.FromSeconds(10));
ngDriver = new NgWebDriver(driver);
}
[TearDown]
public void Teardown()
{
ngDriver.Quit();
}
[Test]
public void Basic()
{
ngDriver.Url = URL;
Assert.IsTrue(ngDriver.FindElement(By.CssSelector("#my")).Displayed);
}
}
and here's the HTML snippet:
<kendo-button id="my" ng-click="myCtrl.doSomething()">Do Something</kendo-button>
I'm getting the following error on the Assert.IsTrue line:
javascript error: [ng:test] http://errors.angularjs.org/1.3.15/ng/test
JavaScript stack:
Error: [ng:test] http://errors.angularjs.org/1.3.15/ng/test
at Error (native)
at https://example.com/AngularJS/1.3.15/angular.min.js:6:417
at Object.Ld [as getTestability] (https://example.com/AngularJS/1.3.15/angular.min.js:18:468)
at eval (eval at executeAsyncScript (unknown source), <anonymous>:10:13)
at eval (eval at executeAsyncScript (unknown source), <anonymous>:18:5)
at executeAsyncScript (<anonymous>:329:26)
at <anonymous>:345:29
at callFunction (<anonymous>:237:33)
at <anonymous>:247:23
at <anonymous>:248:3
(Session info: chrome=49.0.2623.87)
(Driver info: chromedriver=2.21.371459 (36d3d07f660ff2bc1bf28a75d1cdabed0983e7c4),platform=Windows NT 6.1 SP1 x86_64) (UnexpectedJavaScriptError)
and the stack trace is:
at OpenQA.Selenium.Remote.RemoteWebDriver.UnpackAndThrowOnError(Response errorResponse)
at OpenQA.Selenium.Remote.RemoteWebDriver.Execute(String driverCommandToExecute, Dictionary`2 parameters)
at OpenQA.Selenium.Remote.RemoteWebDriver.ExecuteScriptCommand(String script, String commandName, Object[] args)
at OpenQA.Selenium.Remote.RemoteWebDriver.ExecuteAsyncScript(String script, Object[] args)
at Protractor.NgWebDriver.WaitForAngular() in c:\Users\Bruno\Projets\GitHub\bbaia\protractor-net\src\Protractor\NgWebDriver.cs:line 315
at Protractor.NgWebDriver.FindElement(By by) in c:\Users\Bruno\Projets\GitHub\bbaia\protractor-net\src\Protractor\NgWebDriver.cs:line 262
I only got the Protractor and Selenium WebDriver Nuget package. Is there something else I need to install or this is actually a code problem?

You're not actually navigating to the URL before the Assert?
Try -
[Test]
public void Basic()
{
NgDriver.Navigate().GoToUrl(URL);
Assert.IsTrue(ngDriver.FindElement(By.CssSelector("#my")).Displayed);
}

Building on what I shared below, I found that my problem was not specifying the root to the document. In my tag, I had
data-ng-app='myApp'
The code to create my protractor driver was:
ngDriver = new NgWebDriver(driver, "[ng-data='myApp']"
Protractor-net doesn't modify this direct CSS search criteria, so what worked was:
ngDriver = new NgWebDriver(driver, "[data-ng-app='myApp']"
Not an answer, but I don't have the ability to comment.
I'm seeing the same issue. Further investigation reveals that there is an exception being thrown when the NgWebDriver is instantiated. Inspecting the object shows the Location, PageSource, Title and Url members of the object created all "threw an exception of type 'System.InvalidOperationException' string {System.InvalidOperationException}". The exception only gets thrown up to the test when attempting to find an element.
My code looks like:
public DefaultPOM(IWebDriver webDriver, string baseURL)
{
driver = webDriver;
this.baseURL = baseURL;
driver.Manage().Timeouts().SetScriptTimeout(TimeSpan.FromSeconds(10));
driver.Navigate().GoToUrl(baseURL);
ngDriver = new NgWebDriver(driver, "[ng-app='myApp']");
ngDriver.Manage().Window.Maximize();
ngDriver.Navigate().GoToUrl(baseURL);
}
The inspecting the ngDriver object right after it is created shows the exceptions.
If I turn off synchronization before navigating, the only member of the driver object recording the exception is the Location.
ngDriver = new NgWebDriver(driver, "[ng-app='NCTWebPortal']");
ngDriver.IgnoreSynchronization=true;
ngDriver.Manage().Window.Maximize();
ngDriver.Navigate().GoToUrl(baseURL);
ngDriver.IgnoreSynchronization = false;

Take screenshot on test failure + exceptions

Does any of you know possible solution for taking screenshots on test failures and exceptions?
I've added following code in TearDown() but as a result it also makes screenshots on passed tests, so it is not the best solution:
DateTime time = DateTime.Now;
string dateToday = "_date_" + time.ToString("yyyy-MM-dd") + "_time_" + time.ToString("HH-mm-ss");
Screenshot screenshot = ((ITakesScreenshot)driver).GetScreenshot();
screenshot.SaveAsFile((settings.filePathForScreenShots + "Exception" + dateToday + ".png"), System.Drawing.Imaging.ImageFormat.Png);
I've already found that idea: http://yizeng.me/2014/02/08/take-a-screenshot-on-exception-with-selenium-csharp-eventfiringwebdriver/, to use WebDriverExceptionEventArgs, but for some reasons it makes also some random screenshots without any reasonable explanation.
Other ideas I found are for Java and not for NUnit which I use with Selenium, so they are pretty useless.

If you put the screenshot logic in your TearDown method it will be called after each test finishes, no matter if it succeeded or failed.
I use a base class that has a function which wraps the tests and catches all exceptions. When a test fails the exception is caught and a screenshot is taken.
I use this base class for all my Selenium tests and it looks something like this:
public class PageTestBase
{
protected IWebDriver Driver;
protected void UITest(Action action)
{
try
{
action();
}
catch (Exception ex)
{
var screenshot = Driver.TakeScreenshot();
var filePath = "<some appropriate file path goes here>";
screenshot.SaveAsFile(filePath, ImageFormat.Png);
// This would be a good place to log the exception message and
// save together with the screenshot
throw;
}
}
}
The test classes then look like this:
[TestFixture]
public class FooBarTests : PageTestBase
{
// Make sure to initialize the driver in the constructor or SetUp method,
// depending on your preferences
[Test]
public void Some_test_name_goes_here()
{
UITest(() =>
{
// Do your test steps here, including asserts etc.
// Any exceptions will be caught by the base class
// and screenshots will be taken
});
}
[TearDown]
public void TearDown()
{
// Close and dispose the driver
}
}

In C# I use NUnit 3.4. This offeres the OneTimeTearDown method that is able to access the TestContext including the state of the previous executed test. Do not use TearDown because it is not executed after a test fails ;)
using OpenQA.Selenium;
using System.Drawing.Imaging;
...
[OneTimeTearDown]
public void OneTimeTearDown()
{
if (TestContext.CurrentContext.Result.Outcome != ResultState.Success)
{
var screenshot = ((ITakesScreenshot)driver).GetScreenshot();
screenshot.SaveAsFile(#"C:\TEMP\Screenshot.jpg", ImageFormat.Jpeg);
}
}

For greater justice here is the code for the MSTest
public TestContext TestContext { get; set; }
[TestCleanup]
public void TestCleanup()
{
if (TestContext.CurrentTestOutcome == UnitTestOutcome.Failed)
{
var screenshotPath = $"{DateTime.Now:yyyy-MM-dd_HH-mm-ss.fffff}.png";
MyDriverInstance.TakeScreenshot().SaveAsFile(screenshotPath);
TestContext.AddResultFile(screenshotPath);
}
}

YOu can achieve this easily in TestNG suite FIle
Create a ScreenShot method like Below
public static void CaptureDesktop (String imgpath)
{
try
{
Robot robot = new Robot();
Dimension screensize=Toolkit.getDefaultToolkit().getScreenSize();
Rectangle screenRect = new Rectangle(screensize);
BufferedImage screenshot = robot.createScreenCapture(screenRect);
//RenderedImage screenshot = robot.createScreenCapture(screenRect);
ImageIO.write(screenshot, "png" , new File(imgpath));
}
In above method i used robot class so that you can take screen shot of Dekstop also(window+WebPage) and you can call this method in different Listener class which will implements ITestListener Interface. call your screen Shot method in OntestFailure() of that Listener Class
#Override
public void onTestFailure(ITestResult arg0) {
String methodname = arg0.getMethod().getMethodName();
String imgpath = "./Screenshot/"+methodname+".jpg";
Guru99TakeScreenshot.CaptureDesktop(imgpath);
}
This code is working for me. But this code is written in JAVA. I hope this will work in C# if not i wish this code can help you

Customizing a bit of ExtentReport can give extremely useful report having exception+screenshot captured exactly at time of test failure . Screenshot can be placed alongside exception which user can use to know what was website doing when error occurred.
Report Example
Test
#Test (enabled=true)
public void verifySearch() {
extentlogger = extent.createTest("To verify verifySearch");
//Your other code here.....
soft.assertEquals("xxx", "xxxx");
soft.assertAll();
}
AfterMethod
#AfterMethod
public void getResult(ITestResult result) throws Exception{
if(result.getStatus() == ITestResult.FAILURE)
{
extentlogger.log(Status.FAIL, MarkupHelper.createLabel(result.getThrowable() + " - Test Case Failed", ExtentColor.RED));
try {
// get path of captured screenshot using custom failedTCTakeScreenshot method
String screenshotPath = failedTCTakeScreenshot( result);
extentlogger.fail("Test Case Failed Snapshot is below " + extentlogger.addScreenCaptureFromPath(screenshotPath));
} catch (InterruptedException e) {
e.printStackTrace();
}
}
}

Extension to Andrey Stukalin solution.
If you are using SpecFlow 3.0,
if(TestContext.CurrentTestOutcome == UnitTestOutcome.Failed)
doesn't work anymore.
Have to use
if (scenarioContext.TestError != null)