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Add Where-Object -Not support #3529
Description
I often have the need to filter for objects that do not have a property specified or who have a falsey value for a property by doing something like the following:
$Computers = [PSCustomObject]@{
ComputerName = "SPC-1234"
IPAddress = "192.168.0.1"
},
[PSCustomObject]@{
ComputerName = "BGP-5678"
IPAddress = ""
},
[PSCustomObject]@{
ComputerName = "MGC-9101"
}
$Computers |
Where {-not $_.IPAddress }
ComputerName IPAddress
------------ ---------
BGP-5678
MGC-9101
If I am doing the opposite test I can avoid using a script block with Where-Object:
$Computers |
Where IPAddress
ComputerName IPAddress
------------ ---------
SPC-1234 192.168.0.1
I would like to be able to also avoid using a script block when using -Not which would enable the following:
$Computers |
where -not IPAddress
Activity
BrucePay commentedon Apr 11, 2017
This is an issue with the Where-Object cmdlet not the language itself.
iSazonov commentedon Apr 12, 2017
Bruce Payette (@BrucePay) Thanks! Clear.
We have related Issue #2658 Do we want to really do this?
/cc Jason Shirk (@lzybkr)
SimonWahlin commentedon Mar 8, 2018
I think I could add a -Not parameterset to Where-Object.
I can't find any tests for Where-Object, where are those?
powercode commentedon Mar 8, 2018
I think it is a good idea.
iSazonov commentedon Mar 12, 2018
Simon Wåhlin (@SimonWahlin) I dont found
Where-Objecttest.I think we should place it in
test\powershell\Modules\Microsoft.PowerShell.Corefolder.SimonWahlin commentedon Mar 12, 2018
Thanks, I'll try to come up with a set of tests and place them there.
iSazonov commentedon Mar 12, 2018
Simon Wåhlin (@SimonWahlin) Please use new Pester 4 syntax in tests.
SimonWahlin commentedon Mar 12, 2018
Absolutely!