. $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 "Test-AlkamiHotfixManifest10" {
    Mock -CommandName Get-ValidHotfixServerTiers -ModuleName $moduleForMock -MockWith {
        return @("VALID", "TIER", "LIST")
    }
    # Default to mocking all strings returning as null/whitespace
    Mock -CommandName Test-StringIsNullOrWhiteSpace -ModuleName $moduleForMock -MockWith {
        return $true
    }

    Context "Test valid manifest" {
        # This context is for valid manifests, therefore, any invocation of
        # Test-StringIsNullOrWhiteSpace will return $false
        Mock -CommandName Test-StringIsNullOrWhiteSpace -ModuleName $moduleForMock -MockWith {
            return $false
        }
        $result = Test-AlkamiHotfixManifest10 @{
            fixedInOrbVersion = '2000.0.0'
            serverTier        = 'TIER'
        }

        It "Tested successfully" {
            $result.success | Should -BeTrue
        }

        It "Produced no error messages" {
            $result.results.Count | Should -Be 0
        }
    }

    Context "Test manifest with INVALID version" {
        Mock -CommandName Get-ValidHotfixServerTiers -ModuleName $moduleForMock -MockWith {
            return @("VALID", "TIER", "LIST")
        }
        # Both members have values, but one is INVALID
        # Therefore both calls to
        # Test-StringIsNullOrWhiteSpace will return $false
        Mock -CommandName Test-StringIsNullOrWhiteSpace -ModuleName $moduleForMock -MockWith {
            return $false
        }
        $invalidVersionResult = Test-AlkamiHotfixManifest10 @{
            fixedInOrbVersion = 'REPLACEME'
            serverTier        = 'TIER'
        }

        It "Returns success false" {
            $invalidVersionResult.success | Should -BeFalse
        }

        It "Actually produced warnings" {
            $invalidVersionResult.results | Should -Not -BeNullOrEmpty
        }

        It "Produced at least one warning statements" {
            $invalidVersionResult.results.Count | Should -BeGreaterOrEqual 1
        }

        It "Has messages about target version" {
            $invalidVersionResult.results | Should -Match "target version is not a valid"
        }
    }

    Context "Test manifest with MISSING version" {
        Mock -CommandName Get-ValidHotfixServerTiers -ModuleName $moduleForMock -MockWith {
            return @("VALID", "TIER", "LIST")
        }

        Mock -CommandName Test-StringIsNullOrWhiteSpace -ModuleName $moduleForMock -MockWith {
            return $true
        } -ParameterFilter { $Value -ne 'TIER' }
        Mock -CommandName Test-StringIsNullOrWhiteSpace -ModuleName $moduleForMock -MockWith {
            return $false
        } -ParameterFilter { $Value -eq 'TIER' }

        $invalidVersionResult = Test-AlkamiHotfixManifest10 @{
            fixedInOrbVersion = ''
            serverTier        = 'TIER'
        }

        It "Returns success false" {
            $invalidVersionResult.success | Should -BeFalse
        }

        It "Actually produced warnings" {
            $invalidVersionResult.results | Should -Not -BeNullOrEmpty
        }

        It "Produced at least one warning statements" {
            $invalidVersionResult.results.Count | Should -BeGreaterOrEqual 1
        }

        It "Has messages about target version" {
            $invalidVersionResult.results | Should -Match "target version is missing"
        }
    }

    Context "Test manifest with INVALID serverTier" {
        Mock -CommandName Get-ValidHotfixServerTiers -ModuleName $moduleForMock -MockWith {
            return @("VALID", "TIER", "LIST")
        }
        # Both members have values, but one is INVALID
        # Therefore both calls to
        # Test-StringIsNullOrWhiteSpace will return $false
        Mock -CommandName Test-StringIsNullOrWhiteSpace -ModuleName $moduleForMock -MockWith {
            return $false
        }
        $invalidServerTierResult = Test-AlkamiHotfixManifest10 @{
            fixedInOrbVersion = '2000.0.0'
            serverTier        = 'REPLACESERVERTIER'
        }

        It "Returns success false" {
            $invalidServerTierResult.success | Should -BeFalse
        }

        It "Actually produced warnings" {
            $invalidServerTierResult.results | Should -Not -BeNullOrEmpty
        }

        It "Produced at least one warning statements" {
            $invalidServerTierResult.results.Count | Should -BeGreaterOrEqual 1
        }

        It "Has messages about serverTier" {
            $invalidServerTierResult.results | Should -Match "serverTier is not a valid"
        }
    }
    Context "Test manifest with MISSING serverTier" {
        Mock -CommandName Get-ValidHotfixServerTiers -ModuleName $moduleForMock -MockWith {
            return @("VALID", "TIER", "LIST")
        }

        Mock -CommandName Test-StringIsNullOrWhiteSpace -ModuleName $moduleForMock -MockWith {
            return $true
        } -ParameterFilter { $Value -ne '2000.0.0' }
        Mock -CommandName Test-StringIsNullOrWhiteSpace -ModuleName $moduleForMock -MockWith {
            return $false
        } -ParameterFilter { $Value -eq '2000.0.0' }

        $invalidServerTierResult = Test-AlkamiHotfixManifest10 @{
            fixedInOrbVersion = '2000.0.0'
            serverTier        = ''
        }

        # TODO: Will need to be revisited after 2022.4 release in the future (see also Get-PackageMetadataV2)
        # Original 1.0 manifests did not have serverTier
        # Null-or-Whitespace will mean Install-to-All-tiers until 2022.4 when hotfixes have serverTier node
        It "Returns success TRUE until 2022.4 release" {
            $invalidServerTierResult.success | Should -BeTrue -Because "Hotfix manifest v1.0 did not originally have serverTier nodes, so early hotfixes returned empty-string for serverTier"
        }

        It "Actually produced warnings" {
            $invalidServerTierResult.results | Should -Not -BeNullOrEmpty
        }

        It "Produced at least one warning statements" {
            $invalidServerTierResult.results.Count | Should -BeGreaterOrEqual 1
        }

        It "Has messages about serverTier" {
            $invalidServerTierResult.results | Should -Match "serverTier is missing"
        }
    }

}