. $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 "Get-AppSettingsInventory" {

    Context "When the app setting values are good" {

        ## Good file values
        $GoodValues = @'
<?xml version="1.0"?>
<configuration>
  <appSettings>
    <add key="key1" value="value1" />
    <add key="key2" value="value2" />
  </appSettings>
</configuration>
'@

        $global:TempFile = New-TemporaryFile

        Set-Content -Path $global:TempFile.FullName -Value $GoodValues

        Mock -ModuleName $moduleForMock -CommandName Get-AppSettingsInventoryConfigPaths {
            return @(Get-Item $global:TempFile.FullName)
        }


        It "Works as expected" {
            $a = (Get-AppSettingsInventory)
            $a.Values.Values[1] | Should Be "value1"
            $a.Values.Values[2] | Should Be "value2"
            ## Keys is an ICollection, and it doesn't know how to index otherwise.
            ## By forcing it to an array before I index it, I can read the values I expect by ID
            ([string[]]$a.Values.Values.Keys)[1] | Should Be "key1"
            ([string[]]$a.Values.Values.Keys)[2] | Should Be "key2"

            ## There's a filename key and the two of our object
            ([string[]]$a.Values.Values.Keys).Length | Should Be 3
        }

        Remove-Item $global:TempFile.FullName -Force
    }

    Context "When the app setting values are empty" {

        ## Good file values
        $GoodValues = @'
<?xml version="1.0"?>
<configuration>
  <appSettings>
  </appSettings>
</configuration>
'@

        $global:TempFile = New-TemporaryFile

        Set-Content -Path $global:TempFile.FullName -Value $GoodValues

        Mock -ModuleName $moduleForMock -CommandName Get-AppSettingsInventoryConfigPaths {
            return @(Get-Item $global:TempFile.FullName)
        }


        It "Works as expected" {
            $a = (Get-AppSettingsInventory)
            ## There's a filename key even when there are no KVP
            ([string[]]$a.Values.Values.Keys).Length | Should Be 1
        }

        Remove-Item $global:TempFile.FullName -Force
    }

    Context "When the app setting values are good but have a clear entry" {

        ## Good file values
        $GoodValues = @'
<?xml version="1.0"?>
<configuration>
  <appSettings>
    <add key="key1" value="value1" />
    <clear />
    <add key="key2" value="value2" />
  </appSettings>
</configuration>
'@

        $global:TempFile = New-TemporaryFile

        Set-Content -Path $global:TempFile.FullName -Value $GoodValues

        Mock -ModuleName $moduleForMock -CommandName Get-AppSettingsInventoryConfigPaths {
            return @(Get-Item $global:TempFile.FullName)
        }


        It "Works as expected" {
            $a = (Get-AppSettingsInventory)
            $a.Values.Values[1] | Should Be "value1"
            $a.Values.Values[2] | Should Be "value2"
            ## Keys is an ICollection, and it doesn't know how to index otherwise.
            ## By forcing it to an array before I index it, I can read the values I expect by ID
            ([string[]]$a.Values.Values.Keys)[1] | Should Be "key1"
            ([string[]]$a.Values.Values.Keys)[2] | Should Be "key2"

            ## There's a filename key and the two of our object
            ([string[]]$a.Values.Values.Keys).Length | Should Be 3
        }

        Remove-Item $global:TempFile.FullName -Force
    }

}