Verify Colors in Silverlight

I would like to add a color verification for an element in a Silverlight application.

Solution

The code below demonstrates this approach against this Telerik demo site. It gets the first item in the menu and verifies that its foreground color matches pre-defined values:

Manager.Settings.Web.EnableSilverlight = true;  
Manager.LaunchNewBrowser();  
ActiveBrowser.NavigateTo("http://demos.telerik.com/silverlight/#TreeView/Performance");  
SilverlightApp app = ActiveBrowser.SilverlightApps()[0];  
app.Find.Strategy = FindStrategy.WhenNotVisibleReturnElementProxy;  
Button b = app.Find.ByAutomationId<Button>("button");  
b.Wait.ForExists(60000);  
b.User.Click(); 
 
FrameworkElement installerElem = app.Find.ByTextContent("^Installer Branc");  
installerElem.Wait.ForExists(30000);  
TextBlock installer= installerElem.CastAs<TextBlock>(); 
Log.WriteLine(installer.Text); 
Dictionary<string, string> props = installerElem.GetProperties(); 
Assert.IsTrue(props.ContainsKey("Text")); 
Log.WriteLine("Text = " + installerElem.TextContent); 
ArtOfTest.WebAii.Silverlight.UI.Brush textblockBrush = (Brush)installerElem.GetProperty(new AutomationProperty("Foreground", typeof(Brush))); 
 
if (textblockBrush is SolidColorBrush) 
{ 
    Color actualColor = ((SolidColorBrush)textblockBrush).Color; 
    Assert.AreEqual<Byte>(255, actualColor.A, "Error: alpha color does not match expected."); 
    Assert.AreEqual<Byte>(105, actualColor.B, "Error: red color does not match expected."); 
    Assert.AreEqual<Byte>(72, actualColor.G, "Error: green color does not match expected."); 
    Assert.AreEqual<Byte>(40, actualColor.R, "Error: blue color does not match expected."); 
} 
else 
{ 
    // If it's not a SolidColorBrush what is it? How do we handle it? 
    throw new ApplicationException("Expecting a SolidColorBrush, but got a " + textblockBrush.GetType().ToString()); 
} 
Manager.Settings.Web.EnableSilverlight = True 
Manager.LaunchNewBrowser() 
ActiveBrowser.NavigateTo("http://demos.telerik.com/silverlight/#TreeView/Performance") 
Dim app As SilverlightApp = ActiveBrowser.SilverlightApps()(0) 
 
app.Find.Strategy = FindStrategy.WhenNotVisibleReturnElementProxy 
Dim b As Button = app.Find.ByAutomationId(Of Button)("button") 
b.Wait.ForExists(60000)   
b.User.Click()     
 
Dim installerElem As FrameworkElement = app.Find.ByTextContent("^Installer Branc") 
installerElem.Wait.ForExists(30000) 
Dim installer As TextBlock = installerElem.CastAs(Of TextBlock)() 
Log.WriteLine(installer.Text)       
 
Dim props As Dictionary(Of String, String) = installerElem.GetProperties() 
Assert.IsTrue(props.ContainsKey("Text")) 
 
Log.WriteLine("Text = " + installerElem.TextContent) 
 
Dim textblockBrush As ArtOfTest.WebAii.Silverlight.UI.Brush = DirectCast(installerElem.GetProperty(New AutomationProperty("Foreground", GetType(Brush))), Brush) 
 
If TypeOf textblockBrush Is SolidColorBrush Then 
    Dim actualColor As Color = DirectCast(textblockBrush, SolidColorBrush).Color 
    Assert.AreEqual(Of [Byte])(255, actualColor.A, "Error: alpha color does not match expected.") 
    Assert.AreEqual(Of [Byte])(105, actualColor.B, "Error: red color does not match expected.") 
    Assert.AreEqual(Of [Byte])(72, actualColor.G, "Error: green color does not match expected.") 
    Assert.AreEqual(Of [Byte])(40, actualColor.R, "Error: blue color does not match expected.") 
Else 
    Throw New ApplicationException("Expecting a SolidColorBrush, but got a " + textblockBrush.GetType.ToString()) 
End If 
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