Add test to check SuppressRule error behavior

Author: Kapil Borle

Tests/Engine/RuleSuppression.tests.ps1

@@ -10,6 +10,17 @@ $directory = Split-Path -Parent $MyInvocation.MyCommand.Path
 $violationsUsingScriptDefinition = Invoke-ScriptAnalyzer -ScriptDefinition (Get-Content -Raw "$directory\RuleSuppression.ps1")
 $violations = Invoke-ScriptAnalyzer "$directory\RuleSuppression.ps1"
 
+$ruleSuppressionBad = @'
+Function do-something
+{
+    [System.Diagnostics.CodeAnalysis.SuppressMessageAttribute("PSAvoidUsingUserNameAndPassWordParams", "username")]
+    Param(
+    $username,
+    $password
+    )
+}
+'@
+
 Describe "RuleSuppressionWithoutScope" {
     Context "Function" {
         It "Does not raise violations" {
@@ -37,6 +48,14 @@ Describe "RuleSuppressionWithoutScope" {
             $suppression.Count | Should Be 1
         }
     }
+
+    Context "Bad Rule Suppression" {
+    	It "Throws a non-terminating error" {
+	   Invoke-ScriptAnalyzer -ScriptDefinition $ruleSuppressionBad -IncludeRule "PSAvoidUsingUserNameAndPassWordParams" -ErrorVariable errorRecord 2>$null
+	   $errorRecord.Count | Should Be 1
+	   $errorRecord.FullyQualifiedErrorId | Should match "suppression message attribute error"
+	}
+    }
 }
 
 Describe "RuleSuppressionWithScope" {