. $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 = ""

#region Enable-Service-Unit
Describe "Enable-Service-Unit" -Tag 'Unit' {
	Context "Logic" {
#region Arrange

        $randomFileName = [System.IO.Path]::GetRandomFileName()
        $testServiceName = ("_FAKE{0}" -f ($randomFileName.Split(".") | Select-Object -First 1))
        Write-Warning ("Using Test Service Name '{0}'" -f $testServiceName)
		Write-Host "Creating Test Service $testServiceName"

		$svc = New-Service -Name $testServiceName -BinaryPathName "FakePath" -StartupType "Disabled"
		$svc = Get-Service $testServiceName -ErrorAction SilentlyContinue

		# Write warnings as part of this function if setting the service fails, but since we don't actually change the service
		# type in the Set-Service mock the warnings always fire in the tests. So just suprress them here.
		Mock -CommandName Write-Host -MockWith { } -ModuleName $moduleForMock
		Mock -CommandName Write-Warning -MockWith { } -ModuleName $moduleForMock
		Mock -CommandName Set-Service -MockWith { } -ModuleName $moduleForMock
		<#
			Pester `Mock -MockWith` is ... weird.
			It lets you use parameter variable names from *inside* the scope of the namespace you're
			mocking the command call *from*.
			So $service.Name below is not evaluated until the call to Get-Service from *inside* of
			Alkami.PowerShell.Services happens. At which point, $service has a value, as does
			$service.Name
			https://github.com/pester/Pester/wiki/Mock - where they describe the `Mock-With` parameter.
		#>
		Mock -CommandName Get-Service -MockWith {
			[PSCustomObject]@{
				Name = $service.Name;
				StartType = "Disabled";
				Status = "Stopped"
			}
		} -ModuleName $moduleForMock

		if ($null -eq $svc){
			Set-ItResult -Inconclusive -Because 'Could not create service fake'
		}
#endregion Arrange

		It "Calls Set-Service with Disabled Service" {
#region Act
			Enable-Service $svc
#endregion Act
#region Assert
			Assert-MockCalled -ModuleName $moduleForMock -CommandName Set-Service -ParameterFilter { $Name -eq $testServiceName -and $StartupType -eq "Manual" } -Scope It -Exactly 1
#endregion Assert
		}

		It "Calls Set-Service with an Auto Service" {
			Mock -CommandName Get-Service -MockWith {
				[PSCustomObject]@{
					Name = $service.Name;
					StartType = "Automatic";
					Status = "Stopped"
				}
			} -ModuleName $moduleForMock
			#region Act
						Enable-Service $svc
			#endregion Act
			#region Assert
						Assert-MockCalled -ModuleName $moduleForMock -CommandName Set-Service -ParameterFilter { $Name -eq $testServiceName -and $StartupType -eq "Manual" } -Scope It -Exactly 1
			#endregion Assert
		}

		It "Calls Invoke-SCExe with a Tier-0 service"{
			Mock -CommandName Get-Service -MockWith {
				[PSCustomObject]@{
					Name = $service.Name;
					StartType = "Disabled";
					Status = "Stopped"
				}
			} -ModuleName $moduleForMock

			Mock -CommandName Invoke-SCExe -MockWith { } -ModuleName $moduleForMock

			Mock -CommandName Get-ServicesByTier -MockWith { return $service.Name } -ModuleName $moduleForMock

			#region Act
				Enable-Service $svc
			#endregion Act
			#region Assert
				Assert-MockCalled -ModuleName $moduleForMock -CommandName Invoke-SCExe -Scope It -Exactly 1
			#endregion Assert
		}

		It "Calls Set-Service with a Manual Service" {
			Mock -CommandName Get-Service -MockWith {
				[PSCustomObject]@{
					Name = $service.Name;
					StartType = "Manual";
					Status = "Stopped"
				}
			} -ModuleName $moduleForMock
			Mock -CommandName Get-ServicesByTier -MockWith { } -ModuleName $moduleForMock


#region Act
			Enable-Service $svc
#endregion Act
#region Assert
			Assert-MockCalled -ModuleName $moduleForMock -CommandName Set-Service -ParameterFilter { $Name -eq $testServiceName -and $StartupType -eq "Manual" } -Scope It -Exactly 0
#endregion Assert

# Multiple tests use the service, only clean up in the last one.

#region Cleanup
			(Get-CIMInstance Win32_Service -filter ("name='{0}'" -f $testServiceName)) | Invoke-CIMMethod -MethodName Delete
#endregion Cleanup
		}
	}
}
#endregion Enable-Service-Unit