. $PSScriptRoot\..\..\Load-PesterModules.ps1
$here = Split-Path -Parent $MyInvocation.MyCommand.Path
$sut = (Split-Path -Leaf $MyInvocation.MyCommand.Path) -replace '\.tests\.', '.'
$functionPath = Join-Path -Path $here -ChildPath $sut
Write-Host "Overriding SUT: $functionPath"
Import-Module $functionPath -Force
$moduleForMock = ""

Describe "New-AppTierApplicationPool" {
    $appPoolName = "FakeServiceApp"

    Mock -ModuleName $moduleForMock -CommandName Get-AppSetting -MockWith { return $null } #simulates not having a configured app setting

    Mock -ModuleName $moduleForMock -CommandName Get-LogLeadName -MockWith { "UUT" }
    Mock -ModuleName $moduleForMock -CommandName Write-Verbose -MockWith { }
    Mock -ModuleName $moduleForMock -CommandName Write-Host -MockWith { }
    Mock -ModuleName $moduleForMock -CommandName Write-Warning -MockWith { }

    Mock -ModuleName $moduleForMock -CommandName Get-Item -MockWith { return @{ not = "null";} }
    Mock -ModuleName $moduleForMock -CommandName Get-AlkamiCredential -MockWith { param($username,$ignored) return @{ Username = $username; } }
    Mock -ModuleName $moduleForMock -CommandName Set-ItemProperty -MockWith { } # We care that this gets called if $Credential.UserName -ne REPLACEME
    Mock -ModuleName $moduleForMock -CommandName New-WebAppPool -MockWith { } # We care this gets called if Get-Item is not-null, and vice-versa
    Mock -ModuleName $moduleForMock -CommandName Set-AlkamiWebAppPoolConfiguration -MockWith { } # We care this gets called if Get-Item is not-null, and vice-versa

    $fakeCredentialReplaceMe = New-Object 'Management.Automation.PsCredential' "REPLACEME",(ConvertTo-SecureString -AsPlainText -Force -String "Absolutely garbage string")
    $fakeCredentialActualUser = New-Object 'Management.Automation.PsCredential' "ActualUser",(ConvertTo-SecureString -AsPlainText -Force -String "Absolutely garbage string")

    Context "Get-Item is not null, Username is REPLACEME" {
        Mock -ModuleName $moduleForMock -CommandName Get-Item -MockWith { return @{ not = "null";} }

        It "Does not throw" {
            { New-AppTierApplicationPool -AppPoolName $AppPoolName -Credential $fakeCredentialReplaceMe -IsGMSAAccount } | Should -Not -Throw
        }

        It "Did not call Set-ItemProperty (due to username being REPLACEME)" {
            New-AppTierApplicationPool -AppPoolName $AppPoolName -Credential $fakeCredentialReplaceMe -IsGMSAAccount
            Assert-MockCalled -ModuleName $moduleForMock -CommandName Set-ItemProperty -Scope It -Times 0
        }

        It "Did not call New-WebAppPool (due to apppool being found)" {
            New-AppTierApplicationPool -AppPoolName $AppPoolName -Credential $fakeCredentialReplaceMe -IsGMSAAccount
            Assert-MockCalled -ModuleName $moduleForMock -CommandName New-WebAppPool -Scope It -Times 0
        }

        It "Did not call Set-AlkamiWebAppPoolConfiguration (due to apppool being found)" {
            New-AppTierApplicationPool -AppPoolName $AppPoolName -Credential $fakeCredentialReplaceMe -IsGMSAAccount
            Assert-MockCalled -ModuleName $moduleForMock -CommandName Set-AlkamiWebAppPoolConfiguration -Scope It -Times 0
        }
    }

    Context "Get-Item is not null, Username is not REPLACEME" {
        Mock -ModuleName $moduleForMock -CommandName Get-Item -MockWith { return @{ not = "null"; } }

        It "Did not throw" {
            { New-AppTierApplicationPool -AppPoolName $AppPoolName -Credential $fakeCredentialActualUser -IsGMSAAccount } | Should -Not -Throw
        }

        It "Did call Set-ItemProperty (due to username not being REPLACEME)" {
            New-AppTierApplicationPool -AppPoolName $AppPoolName -Credential $fakeCredentialActualUser -IsGMSAAccount
            Assert-MockCalled -ModuleName $moduleForMock -CommandName Set-ItemProperty -Scope It -Times 1
        }

        It "Did not call New-WebAppPool (due to apppool being found)" {
            New-AppTierApplicationPool -AppPoolName $AppPoolName -Credential $fakeCredentialActualUser -IsGMSAAccount
            Assert-MockCalled -ModuleName $moduleForMock -CommandName New-WebAppPool -Scope It -Times 0
        }

        It "Did not call Set-AlkamiWebAppPoolConfiguration (due to apppool being found)" {
            New-AppTierApplicationPool -AppPoolName $AppPoolName -Credential $fakeCredentialActualUser -IsGMSAAccount
            Assert-MockCalled -ModuleName $moduleForMock -CommandName Set-AlkamiWebAppPoolConfiguration -Scope It -Times 0
        }
    }

    Context "Get-Item is null, Username is REPLACEME" {
        Mock -ModuleName $moduleForMock -CommandName Get-Item -MockWith { return $null }


        It "Does not throw" {
            { New-AppTierApplicationPool -AppPoolName $AppPoolName -Credential $fakeCredentialReplaceMe -IsGMSAAccount } | Should -Not -Throw
        }

        It "Did not call Set-ItemProperty (due to username being REPLACEME)" {
            New-AppTierApplicationPool -AppPoolName $AppPoolName -Credential $fakeCredentialReplaceMe -IsGMSAAccount
            Assert-MockCalled -ModuleName $moduleForMock -CommandName Set-ItemProperty -Scope It -Times 0
        }

        It "Did call New-WebAppPool (due to apppool not being found)" {
            New-AppTierApplicationPool -AppPoolName $AppPoolName -Credential $fakeCredentialReplaceMe -IsGMSAAccount
            Assert-MockCalled -ModuleName $moduleForMock -CommandName New-WebAppPool -Scope It -Times 1
        }

        It "Did call Set-AlkamiWebAppPoolConfiguration (due to apppool not being found)" {
            New-AppTierApplicationPool -AppPoolName $AppPoolName -Credential $fakeCredentialReplaceMe -IsGMSAAccount
            Assert-MockCalled -ModuleName $moduleForMock -CommandName Set-AlkamiWebAppPoolConfiguration -Scope It -Times 1
        }
    }

    Context "Get-Item is null, Username is not REPLACEME" {
        Mock -ModuleName $moduleForMock -CommandName Get-Item -MockWith { return $null }


        It "Does not throw" {
            { New-AppTierApplicationPool -AppPoolName $AppPoolName -Credential $fakeCredentialActualUser -IsGMSAAccount } | Should -Not -Throw
        }

        It "Did call Set-ItemProperty (due to username not being REPLACEME)" {
            New-AppTierApplicationPool -AppPoolName $AppPoolName -Credential $fakeCredentialActualUser -IsGMSAAccount
            Assert-MockCalled -ModuleName $moduleForMock -CommandName Set-ItemProperty -Scope It -Times 1
        }

        It "Did call New-WebAppPool (due to apppool not being found)" {
            New-AppTierApplicationPool -AppPoolName $AppPoolName -Credential $fakeCredentialActualUser -IsGMSAAccount
            Assert-MockCalled -ModuleName $moduleForMock -CommandName New-WebAppPool -Scope It -Times 1
        }

        It "Did call Set-AlkamiWebAppPoolConfiguration (due to apppool not being found)" {
            New-AppTierApplicationPool -AppPoolName $AppPoolName -Credential $fakeCredentialActualUser -IsGMSAAccount
            Assert-MockCalled -ModuleName $moduleForMock -CommandName Set-AlkamiWebAppPoolConfiguration -Scope It -Times 1
        }
    }
}