Add a test for the local variable renaming inside functions

Author: K-Phoen

features/rename_local_variable.feature

@@ -90,3 +90,45 @@ Feature: Rename Local Variable
              }
 
             """
+
+    Scenario: Rename Variable In functions
+        Given a PHP File named "src/Foo.php" with:
+            """
+            <?php
+            function operation()
+            {
+                $var = 2;
+
+                for ($i = 0; $i < 3; $i++) {
+                    $var = pow($var, 2);
+                }
+
+                return $var * $var;
+            }
+            """
+        When I use refactoring "rename-local-variable" with:
+            | arg       | value       |
+            | file      | src/Foo.php |
+            | line      | 4           |
+            | name      | var         |
+            | new-name  | number      |
+        Then the PHP File "src/Foo.php" should be refactored:
+            """
+            --- a/vfs://project/src/Foo.php
+            +++ b/vfs://project/src/Foo.php
+            @@ -1,11 +1,11 @@
+             <?php
+             function operation()
+             {
+            -    $var = 2;
+            +    $number = 2;
+
+                 for ($i = 0; $i < 3; $i++) {
+            -        $var = pow($var, 2);
+            +        $number = pow($number, 2);
+                 }
+
+            -    return $var * $var;
+            +    return $number * $number;
+             }
+            """