. $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-WebTierHostFileEntries" {

  Mock -CommandName Get-HostsFileContent -ModuleName $moduleForMock -MockWith {
    return @"
127.0.0.1   thisexistsalready.fakeplace.com
#127.0.0.1   thisiscommentedout.fakeplace.com
#    127.0.0.1   thisiscommentedout.fakeplace.com
127.0.0.2   someonemisconfiguredthiswebhost.fakeplace.com
127-0-0-1   badbutalmostthesameipmatchingurl.fakeplace.com
"@
  }

  It "NewEntry_Calls_Add-HostsFileContent_And_DoesNotWarn" {
    Mock -CommandName Get-LogLeadName -MockWith {return ""} -ModuleName $moduleForMock
    Mock -CommandName Format-Url -MockWith {return $url} -ModuleName $moduleForMock
    Mock -CommandName Add-HostsFileContent -MockWith {} -ModuleName $moduleForMock
    Mock -CommandName Write-Warning -MockWith {} -ModuleName $moduleForMock

    $newEntryUrl = "thisreallydoesnotexist.fakeplace.com"
    $expectedWarning = (" : LOOPBACK Hosts File Entry for URL {0} Already Exists" -f $newEntryUrl)
    $expectedHostsEntry = "127.0.0.1`t`t$newEntryUrl"

    New-WebTierHostFileEntries -Url $newEntryUrl

    Assert-MockCalled Write-Warning -Times 0 -Exactly -Scope It -ModuleName $moduleForMock -ParameterFilter {$Message -eq $expectedWarning}
    Assert-MockCalled Add-HostsFileContent -Times 1 -Exactly -Scope It -ModuleName $moduleForMock -ParameterFilter {$contentToAdd -eq $expectedHostsEntry}

  }
  It "NewEntryThatIsSubstringOfExistingEntry_Calls_Add-HostsFileContent_And_DoesNotWarn" {
    Mock -CommandName Get-LogLeadName -MockWith {return ""} -ModuleName $moduleForMock
    Mock -CommandName Format-Url -MockWith {return $url} -ModuleName $moduleForMock
    Mock -CommandName Add-HostsFileContent -MockWith {} -ModuleName $moduleForMock
    Mock -CommandName Write-Warning -MockWith {} -ModuleName $moduleForMock

    $newEntryUrl = "existsalready.fakeplace.com"
    $expectedWarning = (" : LOOPBACK Hosts File Entry for URL {0} Already Exists" -f $newEntryUrl)
    $expectedHostsEntry = "127.0.0.1`t`t$newEntryUrl"

    New-WebTierHostFileEntries -Url $newEntryUrl

    Assert-MockCalled Write-Warning -Times 0 -Exactly -Scope It -ModuleName $moduleForMock -ParameterFilter {$Message -eq $expectedWarning}
    Assert-MockCalled Add-HostsFileContent -Times 1 -Exactly -Scope It -ModuleName $moduleForMock -ParameterFilter {$contentToAdd -eq $expectedHostsEntry}

  }
  It "ExistingEntry_WritesMessage_And_DoesNotCall_Add-HostsFileContent" {
    Mock -CommandName Get-LogLeadName -MockWith {return ""} -ModuleName $moduleForMock
    Mock -CommandName Format-Url -MockWith {return $url} -ModuleName $moduleForMock
    Mock -CommandName Add-HostsFileContent -MockWith {} -ModuleName $moduleForMock
    Mock -CommandName Write-Warning -MockWith {} -ModuleName $moduleForMock

    $existingEntryUrl = "thisexistsalready.fakeplace.com"
    $expectedWarning = (" : LOOPBACK Hosts File Entry for URL {0} Already Exists" -f $existingEntryUrl)

    New-WebTierHostFileEntries -Url $existingEntryUrl

    Assert-MockCalled Write-Warning -Times 1 -Exactly -Scope It -ModuleName $moduleForMock -ParameterFilter {$Message -eq $expectedWarning}
    Assert-MockCalled Add-HostsFileContent -Times 0 -Exactly -Scope It -ModuleName $moduleForMock

  }
  It "CommentedEntry_Calls_Add-HostsFileContent_And_DoesNotWarn" {
    Mock -CommandName Get-LogLeadName -MockWith {return ""} -ModuleName $moduleForMock
    Mock -CommandName Format-Url -MockWith {return $url} -ModuleName $moduleForMock
    Mock -CommandName Add-HostsFileContent -MockWith {} -ModuleName $moduleForMock
    Mock -CommandName Write-Warning -MockWith {} -ModuleName $moduleForMock

    $commentedEntryUrl = "thisiscommentedout.fakeplace.com"
    $expectedWarning = (" : LOOPBACK Hosts File Entry for URL {0} Already Exists" -f $commentedEntryUrl)
    $expectedHostsEntry = "127.0.0.1`t`t$commentedEntryUrl"

    New-WebTierHostFileEntries -Url $commentedEntryUrl

    Assert-MockCalled Write-Warning -Times 0 -Exactly -Scope It -ModuleName $moduleForMock -ParameterFilter {$Message -eq $expectedWarning}
    Assert-MockCalled Add-HostsFileContent -Times 1 -Exactly -Scope It -ModuleName $moduleForMock -ParameterFilter {$contentToAdd -eq $expectedHostsEntry}

  }
  It "NonLoopback_MatchingUrl_Calls_Add-HostsFileContent_And_DoesNotWarn" {
    Mock -CommandName Get-LogLeadName -MockWith {return ""} -ModuleName $moduleForMock
    Mock -CommandName Format-Url -MockWith {return $url} -ModuleName $moduleForMock
    Mock -CommandName Add-HostsFileContent -MockWith {} -ModuleName $moduleForMock
    Mock -CommandName Write-Warning -MockWith {} -ModuleName $moduleForMock

    $nonLoopbackMatchingEntryUrl = "someonemisconfiguredthiswebhost.fakeplace.com"
    $expectedWarning = (" : LOOPBACK Hosts File Entry for URL {0} Already Exists" -f $nonLoopbackMatchingEntryUrl)
    $expectedHostsEntry = "127.0.0.1`t`t$nonLoopbackMatchingEntryUrl"

    New-WebTierHostFileEntries -Url $nonLoopbackMatchingEntryUrl

    Assert-MockCalled Write-Warning -Times 0 -Exactly -Scope It -ModuleName $moduleForMock -ParameterFilter {$Message -eq $expectedWarning}
    Assert-MockCalled Add-HostsFileContent -Times 1 -Exactly -Scope It -ModuleName $moduleForMock -ParameterFilter {$contentToAdd -eq $expectedHostsEntry}

  }
  It "SimilarIp_MatchingUrl_Calls_Add-HostsFileContent_And_DoesNotWarn" {
    Mock -CommandName Get-LogLeadName -MockWith {return ""} -ModuleName $moduleForMock
    Mock -CommandName Format-Url -MockWith {return $url} -ModuleName $moduleForMock
    Mock -CommandName Add-HostsFileContent -MockWith {} -ModuleName $moduleForMock
    Mock -CommandName Write-Warning -MockWith {} -ModuleName $moduleForMock

    $similarIpUrl = "badbutalmostthesameipmatchingurl.fakeplace.com"
    $expectedWarning = (" : LOOPBACK Hosts File Entry for URL {0} Already Exists" -f $similarIpUrl)
    $expectedHostsEntry = "127.0.0.1`t`t$similarIpUrl"

    New-WebTierHostFileEntries -Url $similarIpUrl

    Assert-MockCalled Write-Warning -Times 0 -Exactly -Scope It -ModuleName $moduleForMock -ParameterFilter {$Message -eq $expectedWarning}
    Assert-MockCalled Add-HostsFileContent -Times 1 -Exactly -Scope It -ModuleName $moduleForMock -ParameterFilter {$contentToAdd -eq $expectedHostsEntry}

  }
}