pester mock in module demo #1915

MockInModuleScope.tests.ps1

Describe 'Module-scoped mocks' {
    BeforeAll {
        $module = "demoModule"

        $m = New-Module -Name $module -ScriptBlock {
            function Invoke-SomeAction {
                [CmdletBinding()]
                param (
                )

                $AJob = Start-Job -InitializationScript {"Some Init stuff"} -ScriptBlock {"The scriptblock"}

            }

            Export-ModuleMember Invoke-SomeAction
        }

        $m | Import-Module
    }

    Context "Using ModuleName" {
        BeforeAll {
            Mock Start-Job -MockWith {
                Write-Warning "Mocked scriptblock using ModuleName"
            } -ModuleName $module
        }

        It "Should invoke without ModuleName - should not match module-mock" {
            Invoke-SomeAction
            Should -Invoke -CommandName Start-Job -Times 0 -Scope It
        }

        It "Should invoke with ModuleName - should match module-mock" {
            Invoke-SomeAction
            Should -Invoke -CommandName Start-Job -ModuleName $module -Times 1 -Scope It
        }
    }

    Context "Using InModuleScope" {
        BeforeAll {
            InModuleScope -ModuleName $module -Scriptblock {
                Mock Start-Job -MockWith {
                    Write-Warning "Mocked scriptblock using InModuleScope"
                }
            }
        }

        It "Should invoke without ModuleName - should not match module-mock" {
            Invoke-SomeAction
            Should -Invoke -CommandName Start-Job -Times 0 -Scope It
        }

        It "Should invoke with ModuleName - should match module-mock" {
            Invoke-SomeAction
            Should -Invoke -CommandName Start-Job -ModuleName $module -Times 1 -Scope It
        }
    }

    AfterAll {
        $m | Remove-Module
    }
}