I am trying to write a pester test for when my function throws an exception and I am unable to get this to work. I modified this some from my original code but the idea is the same. When I run Pester it fails at this assertion with an exception and says the test failed.
I expect and receive the following exception.
Exception Details: "MethodInvocationException: Exception calling "Substring" with 2 arguments: Index and length must refer to a location within the string.
Instead of MethodInvocationException, use a piece of the exception message like "Exception calling "Substring"" The string you're asserting is actually the type of exception. Pester is looking at the message.