. $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 "Wait-AlkamiServiceFabricClusterHealthy" {

    Mock -CommandName Get-LogLeadName                    -ModuleName $moduleForMock -MockWith { return 'Wait-AlkamiServiceFabricClusterHealthy.tests' }
    Mock -CommandName Connect-AlkamiServiceFabricCluster -ModuleName $moduleForMock -MockWith {}
    Mock -CommandName Start-Sleep                        -ModuleName $moduleForMock -MockWith {}
    Mock -CommandName Write-Error                        -ModuleName $moduleForMock -MockWith {}

    Context "Parameter Validation" {

        It "Throws if Hostname is Null" {
            { Wait-AlkamiServiceFabricClusterHealthy -Hostname $null } | Should -Throw
        }

        It "Throws if Hostname is Empty" {
            { Wait-AlkamiServiceFabricClusterHealthy -Hostname '' } | Should -Throw
        }

        It "Throws if Sleep Interval is Zero" {
            { Wait-AlkamiServiceFabricClusterHealthy -SleepIntervalSeconds 0 } | Should -Throw
        }

        It "Throws if Sleep Interval is Too Large" {
            { Wait-AlkamiServiceFabricClusterHealthy -SleepIntervalSeconds 180 } | Should -Throw
        }
    }

    Context "Error Handling" {

        Mock -CommandName Get-ServiceFabricClusterHealth -ModuleName $moduleForMock -MockWith {
            return @{ 'AggregatedHealthState' = 'Test' }
        }

        It "Writes Error if Operation Times Out" {

            Wait-AlkamiServiceFabricClusterHealthy -TimeoutMinutes 0

            Assert-MockCalled -CommandName Connect-AlkamiServiceFabricCluster -Times 1 -Exactly -Scope It
            Assert-MockCalled -CommandName Get-ServiceFabricClusterHealth     -Times 1 -Exactly -Scope It

            Assert-MockCalled -CommandName Write-Error  -Times 1 -Exactly -Scope It `
                -ParameterFilter { $Message -match "Timed out waiting for Service Fabric cluster to be healthy" }
        }
    }

    Context "Logic" {

        Mock -CommandName Get-ServiceFabricClusterHealth -ModuleName $moduleForMock -MockWith {
            return @{ 'AggregatedHealthState' = 'Ok' }
        }

        It "Uses Localhost Hostname By Default" {

            Wait-AlkamiServiceFabricClusterHealthy -TimeoutMinutes 0

            Assert-MockCalled -CommandName Connect-AlkamiServiceFabricCluster -Times 1 -Exactly -Scope It `
                -ParameterFilter { $Hostname -match 'localhost' }
        }

        It "Uses Hostname Parameter if Provided" {

            Wait-AlkamiServiceFabricClusterHealthy -TimeoutMinutes 0 -Hostname 'Test'

            Assert-MockCalled -CommandName Connect-AlkamiServiceFabricCluster -Times 1 -Exactly -Scope It `
                -ParameterFilter { $Hostname -match 'Test' }
        }

        It "Returns Without Error if Cluster is Healthy" {

            Wait-AlkamiServiceFabricClusterHealthy -TimeoutMinutes 0

            Assert-MockCalled -CommandName Connect-AlkamiServiceFabricCluster -Times 1 -Exactly -Scope It
            Assert-MockCalled -CommandName Get-ServiceFabricClusterHealth     -Times 1 -Exactly -Scope It
            Assert-MockCalled -CommandName Write-Error                        -Times 0 -Exactly -Scope It
        }
    }
}