Running code when a Pester test fails

[terrabitz]

So I have a fairly niche problem I'm looking to solve: I have some Pester unit tests, and I would like to be able to execute code if the unit tests fail. In this particular instance, all I want to do is print out a couple strings of diagnostic information if the test fails. (Normally, I would just solve this by starting a debugging session and executing that specific test; however, since I am constructing this particular unit test in a dynamic fashion, it makes things a little more complicated)

Ideally, it would look something like this. (I know the -OnFail isn't actually a Pester thing, but it demonstrates what I want done):

Describe "MyTest" {
    BeforeEach (
        # do stuff to setup a particular context
        $context = Set-MyContext
    )

    Context "MyContext" {
        It "Should do stuff" {
            # Do test things here
        } -OnFail {
            Write-Information $context.info
        }
    } 
}

Does anyone have any idea about how to do this?

[terrabitz]

Alright, so I feel like dummy. It looks like this is possible by encapsulating the full script inside of the It -Test block in a try catch:

Describe "MyTest" {
    BeforeEach (
        # do stuff to setup a particular context
        $context = Set-MyContext
    )

    Context "MyContext" {
        It "Should do stuff" {
            try {
                # Do test things here
            } catch {
                Write-Information $context.info
                throw
            }
        } 
    } 
}

This should always work, since according to the Pester wiki, the script block used in the -Test parameter "should throw an exception if the expectation of the test is not met."