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Write CodedUITest by hand

• Saturday, November 07, 2009 1:38 PMSpirit Du

   
  

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  Is there any tutorial to teach writing coded UI tests without a builder? The action recorder is good, but the generated codes are too difficult to read anyway and too complicated to me. I tried to launch a AUT (Calculator) by calling ApplicationUndeTest.Launch() method, and then trying to find a button to click. The calculator is actually launched, but the Mouse.Click() alway throw a null reference exception. Here is my codes:

  
  

  using System;
  using System.Text;
  using System.Collections.Generic;
  using System.Linq;
  using Microsoft.VisualStudio.TestTools.UnitTesting;
  using Microsoft.VisualStudio.TestTools.UITesting;
  using Microsoft.VisualStudio.TestTools.UITest.Extension;
  
  namespace TestProject1 {
  
  	/// <summary>
  	/// Summary description for GUITest
  	/// </summary>
  	[CodedUITest]
  	public class GUITest {
  
  		private static string CALCULATOR_PATH = "C:\\Windows\\System32\\calc.exe";
  		private static string CALCULATOR_ALTERNATE_PATH = "%SystemRoot%\\System32\\calc.exe";
  
  		private ApplicationUnderTest _application;
  		private UITestControl _window;
  		private TestContext _context;
  
  		/// <summary>
  		/// Gets or sets the test context which provides information about and functionality for the current test run.
  		/// </summary>
  		public TestContext TestContext {
  			get {
  				return _context;
  			}
  			set {
  				_context = value;
  			}
  		}
  
  		/// <summary>
  		/// Launch Calculator before each test method
  		/// </summary>
  		[TestInitialize()]
  		public void MyTestInitialize() {
  			_application = ApplicationUnderTest.Launch(CALCULATOR_PATH, CALCULATOR_ALTERNATE_PATH);
  			_window = new UITestControl(_application);
  			_window.TechnologyName = "MSAA";
  			_window.SearchConfigurations.Add(SearchConfiguration.VisibleOnly);
  			_window.SearchProperties.Add(WinProperties.Window.ControlType, "Window");
  			_window.SearchProperties[WinProperties.Window.Name] = "小算盤";
  		}
  		
  		// Use TestCleanup to run code after each test has run
  		[TestCleanup()]
  		public void MyTestCleanup() {
  			if (_application != null) {
  				_application.Close();
  			}
  			Playback.Cleanup();
  		}
  
  		[TestMethod]
  		public void TestMethod1() {
  			ClickButtonByText(_window, "1");
  			ClickButtonByText(_window, "2");
  			ClickButtonByText(_window, "3");
  			ClickButtonByText(_window, "+");
  			ClickButtonByText(_window, "3");
  			ClickButtonByText(_window, "2");
  			ClickButtonByText(_window, "1");
  			ClickButtonByText(_window, "=");
  		}
  
  		private void ClickButtonByText(UITestControl window, string text) {
  			UITestControl control = new UITestControl(window);
  			control.TechnologyName = "MSAA";
  			control.SearchConfigurations.Add(SearchConfiguration.VisibleOnly);
  			control.SearchProperties.Add(WinProperties.Button.ControlType, "Button");
  			control.SearchProperties[WinProperties.Button.Name] = text;
  			System.Console.WriteLine(control);
  			Mouse.Click(control, control.GetClickablePoint());
  		}
  	}
  }
  
  

  
  

  
  

  The exception stack trace:

  
  

  Microsoft.VisualStudio.TestTools.UITesting.UITestControl.GetPropertyValue(String propertyName)
  Microsoft.VisualStudio.TestTools.UITesting.UITestControl.GetProperty(String propertyName)
  Microsoft.VisualStudio.TestTools.UITesting.UITestControl.GetPropertyInternal[T](String propertyName)
  Microsoft.VisualStudio.TestTools.UITesting.UITestControl.get_BoundingRectangle()
  Microsoft.VisualStudio.TestTools.UITesting.UITestControl.CaptureImage()
  Microsoft.VisualStudio.TestTools.UITesting.Playback.CaptureScreenShot(UITestControl control)
  Microsoft.VisualStudio.TestTools.UITesting.Playback.GetUITestControlString(UITestControl control)
  Microsoft.VisualStudio.TestTools.UITesting.Playback.AddUITestControlDescriptionToException(SystemException exception, IPlaybackContext context)
  Microsoft.VisualStudio.TestTools.UITesting.Playback.MapAndThrowException(SystemException exception, IPlaybackContext context)
  Microsoft.VisualStudio.TestTools.UITesting.Playback.MapAndThrowException(SystemException exception, String actionName, UITestControl uiControl)
  Microsoft.VisualStudio.TestTools.UITesting.Playback.MapAndThrowException(SystemException exception, String actionName, Object parameterValue, UITestControl uiControl)
  Microsoft.VisualStudio.TestTools.UITesting.UITestControl.GetPropertyValue(String propertyName)
  Microsoft.VisualStudio.TestTools.UITesting.UITestControl.GetProperty(String propertyName)
  Microsoft.VisualStudio.TestTools.UITesting.UITestControl.GetPropertyInternal[T](String propertyName)
  Microsoft.VisualStudio.TestTools.UITesting.UITestControl.get_BoundingRectangle()
  Microsoft.VisualStudio.TestTools.UITesting.UITestControl.GetClickablePoint()
  TestProject1.GUITest.ClickButtonByText(UITestControl window, String text) in d:\documents\visual studio 2010\Projects\TestProject1\TestProject1\GUITest.cs: line 76
  TestProject1.GUITest.TestMethod1() in d:\documents\visual studio 2010\Projects\TestProject1\TestProject1\GUITest.cs: line 59
  
  

  
  
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