write-host -fore Green @' Try running the following 3 commands in order: Invoke-Pester ./zDemo.Tests.ps1 <--- it will fail saying "Mock for Invoke-RestMethod not found" $env:AUTOMOCK_RECORD = $true Invoke-Pester ./zDemo.Tests.ps1 <--- it will record the mocks and save them to your temp drive Remove-Item env:AUTOMOCK_RECORD (and optionally, disconnect your network!) Invoke-Pester ./zDemo.Tests.ps1 <--- It will succeed and run much faster because it is pulling from the offline cache! Try again with $debugpreference='continue' '@ . $PSScriptRoot/AutoMock.ps1 Describe "AutoMock Examples" { AutoMock Invoke-RestMethod It 'Records Slow Sites' { (Invoke-RestMethod -Uri 'http://slowwly.robertomurray.co.uk/delay/1000/url/http://ipinfo.io/4.2.2.2/json').timezone | Should -Be 'America/Chicago' } It 'Also works via pipeline' { @{test=5} | Invoke-RestMethod -method post -uri 'http://slowwly.robertomurray.co.uk/delay/1000/url/https://postman-echo.com/post' | % json | % test | should -be 5 } It "Aliases that reference the original command get mocked too" { (irm 'http://slowwly.robertomurray.co.uk/delay/1000/url/http://ipinfo.io/4.2.2.2/json').postal | Should -Be '71203' } }