Variable Scope Tests

InvokeThis.ps1

#Run this ps1, or just copy and paste the code... it will fail pester tests.

Remove-Variable -Name __DummyVariable -ErrorAction SilentlyContinue
"In SomeScript.ps1 via call operator"
& .\SomeScript.ps1

Remove-Variable -Name __DummyVariable -ErrorAction SilentlyContinue
"In SomeScript.ps1 via dot source operator"
. .\SomeScript.ps1

Pester.Test.ps1

Import-Module .\Test-Variable.psm1 -force

$__DummyVariable = "hi!"

Describe "Test-Variable" {
    Context 'Module' { 
        It 'should see _DummyVariable' {
            ( Test-Variable ) -contains "__DummyVariable" | Should be $True
        }
    }
}

Import-Module .\Test-Variable.ps1 -force

Describe "Test-Variable" {
    Context 'Function' { 
        It 'should see _DummyVariable' {
            ( Test-Variable ) -contains "__DummyVariable" | Should be $True
        }
    }
}

SomeScript.ps1

#This is a script to abstract out pester tests

Invoke-Pester .\Pester.Tests.ps1

Test-Variable.ps1

#A simple function, not in a module
function Test-Variable {
    echo 0,1,2,local,script,global | %{Get-Variable -Scope $_ -ErrorAction SilentlyContinue} | Select -ExpandProperty Name | sort -Unique
}

Test-Variable.psm1

#A simple module
function Test-Variable {
    echo 0,1,2,local,script,global | %{Get-Variable -Scope $_ -ErrorAction SilentlyContinue} | Select -ExpandProperty Name | sort -Unique
}

Export-ModuleMember Test-Variable