Have Pester not collect Non-Terminating errors

[Michael G. Mayoral]

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:

PowerShell

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" } } }

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21

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!

• This topic was modified 1 month, 3 weeks ago by Michael G. Mayoral.

[kvprasoon Senior Moderator Topics: 9 Replies: 1447 Points: 5,419Rank: Community MVP]

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.

[Author]

Posts