Add Pester Tests to Support branch

Tests/helpers/gui-helpers.psm1

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+Get-ChildItem -Path $PSScriptRoot\gui -Filter *.ps1 -Recurse | ForEach-Object { . $_.FullName }

Tests/helpers/gui/Get-GuiFeature.ps1

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+function Get-GuiFeature {
+    <#
+        .Synopsis
+            Helper function to call chocolateyguicli and return the feature information as a PSCustomObject.
+    #>
+    [CmdletBinding()]
+    param(
+        [string[]]$Feature = '*'
+    )
+
+    $featureList = (Invoke-GuiCli feature list -r).Lines |
+        ConvertFrom-Csv -Delimiter '|' -Header Name, State, Description |
+        Select-Object Name, @{Name = 'enabled'; Expression = { $_.State -eq 'Enabled' } }, Description
+    foreach ($ftr in $Feature) {
+        $featureList | Where-Object Name -Like $ftr
+    }
+}

Tests/helpers/gui/Invoke-GuiCli.ps1

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+function Invoke-GuiCli {
+    <#
+        .Synopsis
+            Helper function to call chocolateyguicli with any number of specified arguments,
+            and return a hashtable with the output as well as the exit code.
+    #>
+    [CmdletBinding()]
+    param(
+        # The arguments to use when calling the chocolateyguicli executable
+        [Parameter(Position = 1, ValueFromRemainingArguments)]
+        [string[]]$Arguments
+    )
+
+    $output = & chocolateyguicli.exe @arguments
+    [PSCustomObject]@{
+        # We trim all the lines, so we do not take into account
+        # trimming the lines when asserting, and that extra whitespace
+        # is not considered in our assertions.
+        Lines    = if ($output) { $output.Trim() } else { @() }
+        String   = $output -join "`r`n"
+        ExitCode = $LastExitCode
+    }
+}

Tests/pester-tests/chocolateyguicli.Tests.ps1

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+Import-Module ../helpers/gui-helpers.psm1
+
+Describe "chocolateyguicli" -Tag ChocolateyGuiCli {
+    BeforeDiscovery {
+        # Perhaps a better way is to pull these from the LiteDB similar to how we do features from the xml in CLI, but this will do for an initial setup.
+        $Features = Get-GuiFeature
+    }
+
+    Context "Basic CLI functionality" {
+        BeforeAll {
+            $Output = Invoke-GuiCli
+        }
+
+        It 'Should exit Success (0)' {
+            $Output.ExitCode | Should -Be 0 -Because $Output.String
+        }
+
+        It 'Should output appropriate message' {
+            $Output.Lines | Should -Contain "Please run chocolateyguicli with 'chocolateyguicli -?' or 'chocolateyguicli <command> -?' for specific help on each command"
+        }
+    }
+
+    Context "Lists available features" {
+        BeforeAll {
+            $Output = Invoke-GuiCli feature list
+        }
+
+        It "Contains reference of the option (<_.Name>)" -ForEach $Features {
+            $Output.String | Should -Match $Name
+        }
+    }
+
+    Context "Toggles the feature (<_.Name>) successfully" -ForEach $Features {
+        BeforeAll {
+            if ($Enabled) {
+                $DisableOutput = Invoke-GuiCli feature disable --name $_.Name
+                $EnableOutput = Invoke-GuiCli feature enable --name $_.Name
+            } else {
+                $EnableOutput = Invoke-GuiCli feature enable --name $_.Name
+                $DisableOutput = Invoke-GuiCli feature disable --name $_.Name
+            }
+        }
+
+        It "Should exit success (0)" {
+            $EnableOutput.ExitCode | Should -Be 0 -Because $EnableOutput.String
+            $DisableOutput.ExitCode | Should -Be 0 -Because $DisableOutput.String
+        }
+    }
+}