. $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 "Compare-StringToLocalMachineIdentifiers" {

    Context "Expected Matches" {

        $localIPAddresses = Get-NetIPAddress | Where-Object {$_.AddressFamily -eq "IPv4"} | Select-Object -ExpandProperty IPAddress

        $expectedMatches = @(

            "localhost",
            $env:COMPUTERNAME,
            "127.0.0.1",
            (Get-FullyQualifiedServerName),
            ($localIPAddresses | Select-Object -First 1)
        )

        foreach ($goodString in $expectedMatches) {

            It "Returns true for $goodString" {

                Compare-StringToLocalMachineIdentifiers $goodString | Should -BeTrue
            }
        }
    }

    Context "Expected Failures" {

        $expectedFailures = @(

            "192.168.1.1",
            "FakeHostName.google.com",
            "@!@#!!!@(!()",
            13984984521,
            -1
        )

        foreach ($badString in $expectedFailures) {

            It "Returns false for $badString" {

                Compare-StringToLocalMachineIdentifiers $badString | Should -BeFalse
            }
        }
    }

    Context "When a String is Piped To the Function" {

        It "Returns True if the String Matches" {

            "localhost" | Compare-StringToLocalMachineIdentifiers | Should -BeTrue
        }

        It "Returns False if the String Does Not Match" {

            "9.9.9.9" | Compare-StringToLocalMachineIdentifiers | Should -BeFalse
        }
    }
}