Add CustomRulePath parameter to settings file

Author: Kapil Borle

Engine/Settings.cs

@@ -32,12 +32,15 @@ public class Settings
         private List<string> includeRules;
         private List<string> excludeRules;
         private List<string> severities;
+        private List<string> customRulePath;
         private Dictionary<string, Dictionary<string, object>> ruleArguments;
 
+        // todo use 'lambda' expression type getter
         public string FilePath { get { return filePath; } }
         public IEnumerable<string> IncludeRules { get { return includeRules; } }
         public IEnumerable<string> ExcludeRules { get { return excludeRules; } }
         public IEnumerable<string> Severities { get { return severities; } }
+        public IEnumerable<string> CustomRulePath => customRulePath;
         public Dictionary<string, Dictionary<string, object>> RuleArguments { get { return ruleArguments; } }
 
         /// <summary>
@@ -400,6 +403,10 @@ private void parseSettingsHashtable(Hashtable settingsHashtable)
                         excludeRules = GetData(val, key);
                         break;
 
+                    case "customrulepath":
+                        customRulePath = GetData(val, key);
+                        break;
+
                     case "rules":
                         try
                         {

Tests/Engine/Settings.tests.ps1

@@ -114,4 +114,28 @@ Describe "Settings Class" {
             $settings.RuleArguments["PSProvideCommentHelp"]["Placement"] | Should Be 'end'
         }
     }
+
+    Context "When CustomRulePath parameter is provided" {
+        It "Should return an array of 1 item when only 1 path is given in a hashtable" {
+            $rulePath = "C:\rules\module1"
+            $settingsHashtable = @{
+                CustomRulePath = $rulePath
+            }
+
+            $settings = New-Object -TypeName $settingsTypeName  -ArgumentList $settingsHashtable
+            $settings.CustomRulePath.Count | Should Be 1
+            $settings.CustomRulePath[0] | Should be $rulePath
+        }
+
+        It "Should return an array of n items when n items are given in a hashtable" {
+            $rulePaths = @("C:\rules\module1", "C:\rules\module2")
+            $settingsHashtable = @{
+                CustomRulePath = $rulePaths
+            }
+
+            $settings = New-Object -TypeName $settingsTypeName  -ArgumentList $settingsHashtable
+            $settings.CustomRulePath.Count | Should Be $rulePaths.Count
+            0..($rulePaths.Count - 1) | ForEach-Object { $settings.CustomRulePath[$_] | Should be $rulePaths[$_] }
+        }
+    }
 }