Add PSScriptAnalyzer and doc checker

Author: Gijsreyn

tests/QA/module.tests.ps1

@@ -11,15 +11,26 @@ param (
 Write-Verbose ("repoRootPath: $repoRootPath") -Verbose
 Write-Verbose ("modules: $($modules.Count)") -Verbose
 
-Describe 'Module tests' -Tags 'FunctionalQuality' {
-    Context 'General resource folder test' {
-        $moduleResources = [System.Collections.ArrayList]@()
-
-        foreach ($module in $modules) {
-            $moduleResources += @{
-                moduleName = $module.BaseName
-                modulePath = $module.FullName
-            }
+BeforeDiscovery {
+    $moduleResources = [System.Collections.ArrayList]@()
+
+    foreach ($module in $modules) {
+        $moduleResources += @{
+            moduleName = $module.BaseName
+            modulePath = $module.FullName
+        }
+    }
+}
+
+Describe 'Module tests' {
+    Context 'General resource folder test' -Tags 'FunctionalQuality' {
+        It '[<moduleName>]' -TestCases $testCases -Skip:(-not $scriptAnalyzerRules) {
+            $functionFile = Get-ChildItem -Path $sourcePath -Recurse -Include "$Name.ps1"
+
+            $pssaResult = (Invoke-ScriptAnalyzer -Path $functionFile.FullName)
+            $report = $pssaResult | Format-Table -AutoSize | Out-String -Width 110
+            $pssaResult | Should -BeNullOrEmpty -Because `
+                "some rule triggered.`r`n`r`n $report"
         }
 
         It '[<moduleName>] Should import without error' -TestCases $moduleResources {
@@ -39,5 +50,72 @@ Describe 'Module tests' -Tags 'FunctionalQuality' {
 
             Get-Module $moduleName | Should -BeNullOrEmpty
         }
+
+        It '[<moduleName>] Should have unit test' -TestCases $moduleResources {
+            Get-ChildItem -Path 'tests\' -Recurse -Include "$ModuleName.Tests.ps1" | Should -Not -BeNullOrEmpty
+        }
+    }
+
+    Context 'Quality checks' -Tags 'TestQuality' {
+        BeforeDiscovery {
+            if (Get-Command -Name Invoke-ScriptAnalyzer -ErrorAction SilentlyContinue) {
+                $scriptAnalyzerRules = Get-ScriptAnalyzerRule
+            } else {
+                if ($ErrorActionPreference -ne 'Stop') {
+                    Write-Warning -Message 'ScriptAnalyzer not found!'
+                } else {
+                    throw 'ScriptAnalyzer not found!'
+                }
+            }
+        }
+
+        It '[<moduleName>] Should pass PSScriptAnalyzer' -TestCases $moduleResources -Skip:(-not $scriptAnalyzerRules) {
+            param (
+                [string] $modulePath,
+                [string] $moduleName
+            )
+
+            $pssaResult = Invoke-ScriptAnalyzer -Path $modulePath
+            $report = $pssaResult | Format-Table -AutoSize | Out-String -Width 110
+            $pssaResult | Should -BeNullOrEmpty -Because `
+                "some rule triggered.`r`n`r`n $report"
+        }
+    }
+
+    Context 'Documentation checks' -Tags 'DocQuality' -ForEach $moduleResources {
+        $moduleResource = $_
+        $moduleImport = Import-PowerShellDataFile -Path $moduleResource.ModulePath.Replace('.psm1', '.psd1')
+
+        $resources = [System.Collections.ArrayList]@()
+
+        foreach ($resource in $moduleImport.DscResourcesToExport) {
+            $resources += @{
+                moduleName = $moduleResource.ModuleName
+                resource   = $resource
+                HelpFile   = Join-Path $repoRootPath 'resources' 'Help' $moduleResource.ModuleName "$resource.md"
+            }
+        }
+
+        It '[<moduleName>] Should have a help file for [<resource>] resource' -TestCases $resources {
+            param (
+                [string] $moduleName,
+                [string] $resource,
+                [string] $helpFile
+            )
+
+            $expectedFile = Test-Path $helpFile -ErrorAction SilentlyContinue
+            $expectedFile | Should -Be $true
+        }
+
+        It '[<moduleName>] Should have a help file for [<resource>] resource that is not empty' -TestCases $resources {
+            param (
+                [string] $moduleName,
+                [string] $resource,
+                [string] $helpFile
+            )
+
+            $file = Get-Item -Path $helpFile -ErrorAction SilentlyContinue
+            $file.Length | Should -BeGreaterThan 0
+        }
     }
 }