Have Pester not collect Non-Terminating errors

Pester
1

Hi All, I’m running into this issue where I’m casting a variable to [int] type, but unfortunately for me the data being fed is not always in a correct format to succeed 100%. I’ve created a basic test to illustrate my issue:

Describe "Test Non-Terminating Error" {

    Context "Non-Terminating Error" {

        It "Non-Terminating Error" {

            [int]$Number = 'oc'
            $Test = 'Test'
            $obj = [PSCustomObject]@{
                Number = $Number
                Test   = $test
            }

            $obj.Number | Should -BeNullOrEmpty
            $obj.Test   | Should -Be "Test"

        }

    }
    
}

When I run this test it always Fails and never processes any of the Assertions:

[-] Test Non-Terminating Error.Non-Terminating Error.Non-Terminating Error 21ms (20ms|1ms)FormatException: Input string was not in a correct format.PSInvalidCastException: Cannot convert value "oc" to type "System.Int32". Error: "Input string was not in a correct format."ArgumentTransformationMetadataException: Cannot convert value "oc" to type "System.Int32". Error: "Input string was not in a correct format."at , .\assets\_Test.Tests.ps1:11 Tests completed in 1.47s Tests Passed: 0, Failed: 1, Skipped: 0 NotRun: 0
I've already tried:
  • Configuring Pester Should ErrorPreference to 'Continue'
  • Setting PowerShell Error Action Preference to 'SilentlyContinue' ($ErrorActionPreference = 'SilentlyContinue')
  • Try/Catch doesn't catch because its Non-Terminating
Is there a way to have pester ignore any non-terminating error that happens within the IT block and just execute the Assertions?

I’m running Pester 5.0.3 on PowerShell 5.1

Please Help!

2

Here the error will occur during the type conversion at [int]$Number = 'oc' . So you having a test for this line is better.
Its best to use [int]::TryParse() method which will not throw any error.