# . $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 = ""

$originalMachineName = $env:COMPUTERNAME

Describe "Get-ConfigSetting" {
    Mock -ModuleName $moduleForMock -CommandName Get-LogLeadName -MockWith { return "SUT"}
    Mock -ModuleName $moduleForMock -CommandName Write-Verbose -MockWith { }

    Context "No Config Setting present returns `$null" {
        Mock -ModuleName $moduleForMock -CommandName Get-AppSetting -MockWith { return $null }
        Mock -ModuleName $moduleForMock -CommandName Get-EnvironmentVariable -MockWith { return $null }

        $response = Get-ConfigSetting "anything"

        It "should be `$null" {
            $response | Should -BeNull
        }

        It "tries to get the app setting" {
            Assert-MockCalled -CommandName Get-AppSetting -ModuleName $moduleForMock -Times 1 -Exactly -Scope Context
        }

        It "tries to get the environment variable" {
            Assert-MockCalled -CommandName Get-EnvironmentVariable -ModuleName $moduleForMock -Times 1 -Exactly -Scope Context
        }
    }

    Context "Environment Variable Setting present" {
        Mock -ModuleName $moduleForMock -CommandName Get-AppSetting -MockWith { return $null }
        Mock -ModuleName $moduleForMock -CommandName Get-EnvironmentVariable -MockWith { return "a value" }

        $response = Get-ConfigSetting "anything"

        It "should be the target value" {
            $response | Should -Be "a value"
        }

        It "tries to get the app setting" {
            Assert-MockCalled -CommandName Get-AppSetting -ModuleName $moduleForMock -Times 1 -Exactly -Scope Context
        }

        It "tries to get the environment variable" {
            Assert-MockCalled -CommandName Get-EnvironmentVariable -ModuleName $moduleForMock -Times 1 -Exactly -Scope Context
        }
    }

    Context "Machine Config Setting present" {
        Mock -ModuleName $moduleForMock -CommandName Get-AppSetting -MockWith { return "a value" }
        Mock -ModuleName $moduleForMock -CommandName Get-EnvironmentVariable -MockWith { return $null }

        $response = Get-ConfigSetting "anything"

        It "should be the target value" {
            $response | Should -Be "a value"
        }

        It "tries to get the app setting" {
            Assert-MockCalled -CommandName Get-AppSetting -ModuleName $moduleForMock -Times 1 -Exactly -Scope Context
        }

        It "does not try to get the environment variable" {
            Assert-MockCalled -CommandName Get-EnvironmentVariable -ModuleName $moduleForMock -Times 0 -Exactly -Scope Context
        }
    }
}