Add tests for UseWhitespace rule

Author: Kapil Borle

Tests/Rules/UseWhitespace.tests.ps1

@@ -1,9 +1,86 @@
 Import-Module PSScriptAnalyzer
-$ruleName = "UseWhitespace"
+$ruleName = "PSUseWhitespace"
+$ruleConfiguration = @{
+    Enable = $true
+    CheckOpenBrace = $true
+}
+
+$settings = @{
+    IncludeRules = @($ruleName)
+    Rules = @{
+        PSUseWhitespace = $ruleConfiguration
+    }
+}
 
 Describe "UseWhitespace" {
-    Context "" {
-        It "" {
+    Context "When no whitespace is present before if block open brace" {
+        BeforeAll {
+            $def = @'
+if ($true){}
+'@
+            $violations = Invoke-ScriptAnalyzer -ScriptDefinition $def -Settings $settings
+        }
+
+        It "Should find a violation" {
+            $violations.Count | Should Be 1
+        }
+    }
+
+    Context "When no whitespace is present before open paren of an if block" {
+        BeforeAll {
+            $def = @'
+if($true) {}
+'@
+            $violations = Invoke-ScriptAnalyzer -ScriptDefinition $def -Settings $settings
+        }
+
+        It "Should find a violation" {
+            $violations.Count | Should Be 1
+        }
+    }
+
+    Context "When no whitespace is present before open paren of a function definition" {
+        BeforeAll {
+            $def = @'
+function foo($param1) {
+
+}
+'@
+            $violations = Invoke-ScriptAnalyzer -ScriptDefinition $def -Settings $settings
+        }
+
+                It "Should not find a violation" {
+            $violations.Count | Should Be 0
+        }
+    }
+
+    Context "When no whitespace is present before open of a param block" {
+        BeforeAll {
+            $def = @'
+function foo() {
+    param( )
+}
+'@
+            $violations = Invoke-ScriptAnalyzer -ScriptDefinition $def -Settings $settings
+        }
+
+                It "Should not find a violation" {
+            $violations.Count | Should Be 0
+        }
+    }
+
+        Context "When no whitespace is present in a nested open paren" {
+        BeforeAll {
+            $def = @'
+function foo($param) {
+    ((Get-Process))
+}
+'@
+            $violations = Invoke-ScriptAnalyzer -ScriptDefinition $def -Settings $settings
+        }
+
+                It "Should not find a violation" {
+            $violations.Count | Should Be 0
         }
     }
 }