PowerShell/test/powershell/Invoke-Expression.Tests.ps1

$here = Split-Path -Parent $MyInvocation.MyCommand.Path

Describe "Invoke-Expression" {
    
    Context "Should execute the invoked command validly" {

        It "Should return the echoed text" {
            (Invoke-Expression -command "echo pestertest1") | Should be "pestertest1"
        }

        It "Should return the echoed text for the alias" {
            (iex -command "echo pestertest2") | Should Be "pestertest2" 
        }

        It "Should return the echoed text from a script" {
            $testfile = "$here/assets/echoscript.ps1"
            $testcommand = "echo pestertestscript"
            $testcommand | Add-Content -Path $testfile
            (Invoke-Expression $testfile) | Should Be "pestertestscript"
            Remove-Item $testfile
        }

        It "Should return the echoed text from a script from the alias" {
            $testfile = "$here/assets/echoscript.ps1"
            $testcommand = "echo pestertestscript"
            $testcommand | Add-Content -Path $testfile
            (iex $testfile) | Should Be "pestertestscript"
            Remove-Item $testfile
        }
    }
}