Calculator.Tests.ps1

Set-StrictMode -Version Latest
$ErrorActionPreference = 'Stop'
$DebugPreference = 'SilentlyContinue'
$InformationPreference = 'Continue'

Describe "Calculator" {

    BeforeAll {

        . "$PSScriptRoot\common.ps1"

        $deps = @{
            'Interop.UIAutomationClient' = '10.19041.0';
            'FlaUI.Core' = '4.0.0';
            'FlaUI.UIA3' =  '4.0.0';
        }

        Add-NuGetDependencies -NugetPackages $deps

        $uia = New-Object FlaUI.UIA3.UIA3Automation
        $cf = $uia.ConditionFactory

        $aut = [Diagnostics.Process]::Start('calc')
        $aut.WaitForInputIdle(5000) | Out-Null
        Start-Sleep -s 2

        # Retrieve the correct PID as this changes during application startup
        $autPid = ((Get-Process).where{ $_.MainWindowTitle -eq 'Calculator' })[0].Id

        $desktop = $uia.GetDesktop()
        $mw = $desktop.FindFirstDescendant($cf.ByProcessId($autPid))

    }

    Context 'Can calculate' {

        It 'Solves 5 + 9' {

            (Get-AutomationButton $mw -Id 'num5Button').Click()
            (Get-AutomationButton $mw -Id 'plusButton').Click()
            (Get-AutomationButton $mw -Id 'num9Button').Click()
            (Get-AutomationButton $mw -Id 'equalButton').Click()

            $result = ((Get-AutomationTextBox $mw -Id 'CalculatorResults').Name) -replace '[^0-9]'
            $result | Should -Be 14

        }

        It 'Solves 14 - 9' {

            (Get-AutomationButton $mw -Id 'num1Button').Click()
            (Get-AutomationButton $mw -Id 'num4Button').Click()
            (Get-AutomationButton $mw -Id 'minusButton').Click()
            (Get-AutomationButton $mw -Id 'num9Button').Click()
            (Get-AutomationButton $mw -Id 'equalButton').Click()

            $result = ((Get-AutomationTextBox $mw -Id 'CalculatorResults').Name) -replace '[^0-9]'
            $result | Should -Be 5

        }

        It 'Solves 5 * 9' {

            (Get-AutomationButton $mw -Id 'num5Button').Click()
            (Get-AutomationButton $mw -Id 'multiplyButton').Click()
            (Get-AutomationButton $mw -Id 'num9Button').Click()
            (Get-AutomationButton $mw -Id 'equalButton').Click()

            $result = ((Get-AutomationTextBox $mw -Id 'CalculatorResults').Name) -replace '[^0-9]'
            $result | Should -Be 45

        }

        It 'Solves 45 / 9' {

            (Get-AutomationButton $mw -Id 'num4Button').Click()
            (Get-AutomationButton $mw -Id 'num5Button').Click()
            (Get-AutomationButton $mw -Id 'divideButton').Click()
            (Get-AutomationButton $mw -Id 'num9Button').Click()
            (Get-AutomationButton $mw -Id 'equalButton').Click()

            $result = ((Get-AutomationTextBox $mw -Id 'CalculatorResults').Name) -replace '[^0-9]'
            $result | Should -Be 5

        }

    }

    AfterAll {
        $uia.Dispose()
        $aut.Dispose()
        Stop-Process -Force -Id $autPid
    }
}