Add wild card support to Get-ScriptAnalyzerRule

Engine/ScriptAnalyzer.cs

@@ -10,6 +10,7 @@
 // THE SOFTWARE.
 //
 
+using System.Text.RegularExpressions;
 using Microsoft.Windows.Powershell.ScriptAnalyzer.Commands;
 using Microsoft.Windows.Powershell.ScriptAnalyzer.Generic;
 using System;
@@ -192,8 +193,18 @@ public IEnumerable<IRule> GetRule(string[] moduleNames, string[] ruleNames)
 
             if (ruleNames != null)
             {
-                results = rules.Where<IRule>(item =>
-                    ruleNames.Contains(item.GetName(), StringComparer.OrdinalIgnoreCase));
+                //Check wild card input for -Name parameter and create regex match patterns
+                List<Regex> regexList = new List<Regex>();
+                foreach (string ruleName in ruleNames)
+                {
+                    Regex includeRegex = new Regex(String.Format("^{0}$", Regex.Escape(ruleName).Replace(@"\*", ".*")), RegexOptions.IgnoreCase);
+                    regexList.Add(includeRegex);
+                }
+
+                results = from rule in rules
+                    from regex in regexList
+                    where regex.IsMatch(rule.GetName())
+                    select rule;
             }
             else
             {

Tests/Engine/GetScriptAnalyzerRule.tests.ps1

@@ -8,12 +8,12 @@ $dscIdentical = "PSDSCUseIdenticalParametersForDSC"
 Describe "Test available parameters" {
     $params = $sa.Parameters
     Context "Name parameter" {
-        It "has a Name parameter" {
-            $params.ContainsKey("Name") | Should Be $true
+        It "has a RuleName parameter" {
+            $params.ContainsKey("RuleName") | Should Be $true
         }
 
         It "accepts string" {
-            $params["Name"].ParameterType.FullName | Should Be "System.String[]"
+            $params["RuleName"].ParameterType.FullName | Should Be "System.String[]"
         }
     }
 
@@ -32,35 +32,35 @@ Describe "Test available parameters" {
 Describe "Test Name parameters" {
     Context "When used correctly" {
         It "works with 1 name" {
-            $rule = Get-ScriptAnalyzerRule -Name $singularNouns
+            $rule = Get-ScriptAnalyzerRule -RuleName $singularNouns
             $rule.Count | Should Be 1
-            $rule[0].Name | Should Be $singularNouns
+            $rule[0].RuleName | Should Be $singularNouns
         }
 
         It "works for DSC Rule" {
-            $rule = Get-ScriptAnalyzerRule -Name $dscIdentical
+            $rule = Get-ScriptAnalyzerRule -RuleName $dscIdentical
             $rule.Count | Should Be 1
-            $rule[0].Name | Should Be $dscIdentical
+            $rule[0].RuleName | Should Be $dscIdentical
         }
 
         It "works with 3 names" {
-            $rules = Get-ScriptAnalyzerRule -Name $approvedVerbs, $singularNouns
+            $rules = Get-ScriptAnalyzerRule -RuleName $approvedVerbs, $singularNouns
             $rules.Count | Should Be 2
-            ($rules | Where-Object {$_.Name -eq $singularNouns}).Count | Should Be 1
-            ($rules | Where-Object {$_.Name -eq $approvedVerbs}).Count | Should Be 1
+            ($rules | Where-Object {$_.RuleName -eq $singularNouns}).Count | Should Be 1
+            ($rules | Where-Object {$_.RuleName -eq $approvedVerbs}).Count | Should Be 1
         }
     }
 
     Context "When used incorrectly" {
         It "1 incorrect name" {
-            $rule = Get-ScriptAnalyzerRule -Name "This is a wrong name"
+            $rule = Get-ScriptAnalyzerRule -RuleName "This is a wrong name"
             $rule.Count | Should Be 0
         }
 
         It "1 incorrect and 1 correct" {
-            $rule = Get-ScriptAnalyzerRule -Name $singularNouns, "This is a wrong name"
+            $rule = Get-ScriptAnalyzerRule -RuleName $singularNouns, "This is a wrong name"
             $rule.Count | Should Be 1
-            $rule[0].Name | Should Be $singularNouns
+            $rule[0].RuleName | Should Be $singularNouns
         }
     }
 }
@@ -86,25 +86,25 @@ Describe "Test RuleExtension" {
         }
 
         It "with Name of a built-in rules" {
-            $ruleExtension = Get-ScriptAnalyzerRule -CustomizedRulePath $directory\CommunityAnalyzerRules\CommunityAnalyzerRules.psm1 -Name $singularNouns
+            $ruleExtension = Get-ScriptAnalyzerRule -CustomizedRulePath $directory\CommunityAnalyzerRules\CommunityAnalyzerRules.psm1 -RuleName $singularNouns
             $ruleExtension.Count | Should Be 1
-            $ruleExtension[0].Name | Should Be $singularNouns
+            $ruleExtension[0].RuleName | Should Be $singularNouns
         }
 
         It "with Names of built-in, DSC and non-built-in rules" {
-            $ruleExtension = Get-ScriptAnalyzerRule -CustomizedRulePath $directory\CommunityAnalyzerRules\CommunityAnalyzerRules.psm1 -Name $singularNouns, $measureRequired, $dscIdentical
+            $ruleExtension = Get-ScriptAnalyzerRule -CustomizedRulePath $directory\CommunityAnalyzerRules\CommunityAnalyzerRules.psm1 -RuleName $singularNouns, $measureRequired, $dscIdentical
             $ruleExtension.Count | Should be 3
-            ($ruleExtension | Where-Object {$_.Name -eq $measureRequired}).Count | Should Be 1
-            ($ruleExtension | Where-Object {$_.Name -eq $singularNouns}).Count | Should Be 1
-            ($ruleExtension | Where-Object {$_.Name -eq $dscIdentical}).Count | Should Be 1
+            ($ruleExtension | Where-Object {$_.RuleName -eq $measureRequired}).Count | Should Be 1
+            ($ruleExtension | Where-Object {$_.RuleName -eq $singularNouns}).Count | Should Be 1
+            ($ruleExtension | Where-Object {$_.RuleName -eq $dscIdentical}).Count | Should Be 1
         }
     }
 
     Context "When used incorrectly" {
         It "file cannot be found" {
             $wrongFile = Get-ScriptAnalyzerRule -CustomizedRulePath "This is a wrong rule" 3>&1
             ($wrongFile  | Select-Object -First 1) | Should Match "Cannot find rule extension 'This is a wrong rule'."
-            ($wrongFile | Where-Object {$_.Name -eq $singularNouns}).Count | Should Be 1
+            ($wrongFile | Where-Object {$_.RuleName -eq $singularNouns}).Count | Should Be 1
         }
 
     }
@@ -120,4 +120,16 @@ Describe "TestSeverity" {
         $rules = Get-ScriptAnalyzerRule -Severity Error,Information
         $rules.Count | Should be 8
     }
+}
+
+Describe "TestWildCard" {
+    It "filters rules based on the -RuleName wild card input" {
+        $rules = Get-ScriptAnalyzerRule -RuleName PSDSC*
+        $rules.Count | Should be 4
+    }
+
+    It "filters rules based on wild card input and severity"{
+        $rules = Get-ScriptAnalyzerRule -RuleName PSDSC*　-Severity Information
+        $rules.Count | Should be 2
+    }
 }