Adding tests for class based resource

Author: KarolKaczmarek

Tests/Rules/DscExamplesPresent.tests.ps1

@@ -0,0 +1,37 @@
+Import-Module -Verbose PSScriptAnalyzer
+
+$currentPath = Split-Path -Parent $MyInvocation.MyCommand.Path
+$ruleName = "PSDSCDscExamplesPresent"
+
+Describe "DscExamplesPresent rule in class based resource" {
+    
+    $examplesPath = "$currentPath\DSCResources\MyDscResource\Examples"
+    $classResourcePath = "$currentPath\DSCResources\MyDscResource\MyDscResource.psm1"
+
+    Context "When examples absent" {
+        
+        $violations = Invoke-ScriptAnalyzer -ErrorAction SilentlyContinue $classResourcePath | Where-Object {$_.RuleName -eq $ruleName}
+        $violationMessage = "No examples found for resource 'FileResource'"
+
+        It "has 1 missing examples violation" {
+            $violations.Count | Should Be 1
+        }
+
+        It "has the correct description message" {
+            $violations[0].Message | Should Match $violationMessage
+        }
+    }
+
+    Context "When examples present" {  
+        New-Item -Path $examplesPath -ItemType Directory
+        New-Item -Path "$examplesPath\FileResource_Example.psm1" -ItemType File
+
+        $noViolations = Invoke-ScriptAnalyzer -ErrorAction SilentlyContinue $classResourcePath | Where-Object {$_.RuleName -eq $ruleName}
+
+        It "returns no violations" {
+            $noViolations.Count | Should Be 0
+        }
+
+        Remove-Item -Path $examplesPath -Recurse -Force
+    }
+}