Anthony provided what looks like a nice solution to a problem I raised (http://www.telerik.com/automated-testing-tools/community/forums/test-studio/general-discussions/finding-and-clicking-dynamic-buttons.aspx), but when I try to implement it my script fails to run. The log shows this error:
WaitForLogoutButtonAvailable.tstest.vb: Line 81: (BC30491) Expression does not produce a value.
This is the VB sub:
Public Sub WaitForLogoutButtonAvailable_CodedStep()
Dim found As Integer = 0
Dim s As HtmlSpan = Find.ByExpression(Of HtmlSpan)("textcontent=~logout")
While found = 0
If (Assert.IsNotNull(s)) Then
'Stop looking
found = 1
Else
'Wait for '250' msec.
System.Threading.Thread.Sleep(250)
End If
End While
End Sub
I tried exchanging the statement:
If (Assert.IsNotNull(s)) Then
for:
If (Assert.IsNotNull(s) = true) Then
but I get the same result. I also tried with various speechamrks, 1's and 0's. I read the on-line documentation (http://www.telerik.com/automated-testing-tools/support/documentation/user-guide/write-tests-in-code/intermediate-topics/html-control-suite/html-asserts.aspx, and also http://www.telerik.com/automated-testing-tools/support/documentation/user-guide/write-tests-in-code/intermediate-topics/element-identification/findparam-objects.aspx) but the pages don't actually show me what is returned by the assert.
Where am I going wrong?
Thanks,
Nigel Edwards, Transition Computing
3 Answers, 1 is accepted
Rank 2
Public Sub WaitForLogoutButtonAvailable_CodedStep()
Dim s As HtmlSpan = Find.ByExpression(Of HtmlSpan)("textcontent=~logout")
While Not Assert.IsNotNull(s)
System.Threading.Thread.Sleep(250)
s = Find.ByExpression(Of HtmlSpan)("textcontent=~logout")
End While
End Sub
Thanks.
I am sorry for the confusion. The Assert.xxxx functions do not return any value at all. As a result they cannot be used in IF statements as you're trying to do. The purpose of the Assert class is it will throw an exception (which will immediately abort the test) if the condition being tested is not true. In other words Assert.IsNotNull(s) will throw an exception and make the test immediately abort if s is null. Else the test will continue to run normally.
If you can explain what you're trying to accomplish with your code perhaps we can offer you a better solution to what you've attempted to code.
Cody
the Telerik team
Test Studio Trainings
Rank 2