Get-Command: Returned CommandInfo object does not populate ScriptBlock property when -Name parameter is not used #8910
Description
Steps to reproduce
I created a Pester test for this
Describe "My test" {
It "works" {
(Get-Command -CommandType Function | Where-Object { $_.Name -eq 'Install-Module' }).ScriptBlock.Attributes | Should -Not -BeNullOrEmpty
(Get-Command 'Install-Module').ScriptBlock.Attributes | Should -Not -BeNullOrEmpty
}
}Expected behavior
The test passes.
Actual behavior
Describing My test
[-] works 84ms
Expected a value, but got $null or empty.
3: (Get-Command -CommandType Function | Where-Object { $_.Name -eq 'Install-Module' }).ScriptBlock.Attributes | Should -Not -BeNullOrEmpty
at <ScriptBlock>, C:\Users\cberg\Desktop\foo.tests.ps1: line 3
The test passed only once Get-Command 'Install-Module' gets executed once in the current session.
I acknowledge that Get-Command tries to be more efficient when returning all commands but at least when accessing the properties of the object I'd expect them to be lazily evaluated.
Background: In order to improve performance of PSSA, I would like to run Get-Command in the background once to populate a cached version of the commands instead of individually calling Get-Command -Name for each command, which is much more expensive.
Environment data
Name Value
---- -----
PSVersion 6.2.0-preview.4
PSEdition Core
GitCommitId 6.2.0-preview.4
OS Microsoft Windows 10.0.17763
Platform Win32NT
PSCompatibleVersions {1.0, 2.0, 3.0, 4.0…}
PSRemotingProtocolVersion 2.3
SerializationVersion 1.1.0.1
WSManStackVersion 3.0
