Generic/DuplicateClassName: improve enum tests

* Test case file 1 should contain both a duplicate and a non-duplicate enum.
* Test case file 2 should contain an enum which was already declared in file 1 to verify cross-file detection.

Author: jrfnl

src/Standards/Generic/Tests/Classes/DuplicateClassNameUnitTest.1.inc

@@ -4,8 +4,9 @@ class YourClass {}
 interface MyInterface {}
 interface YourInterface {}
 trait MyTrait {}
-enum MyEnum {}
 trait YourTrait {}
+enum MyEnum {}
+enum YourEnum {}
 class MyClass {}
 interface MyInterface {}
 trait MyTrait {}

src/Standards/Generic/Tests/Classes/DuplicateClassNameUnitTest.2.inc

@@ -2,4 +2,5 @@
 class MyClass {}
 interface MyInterface {}
 trait MyTrait {}
+enum MyEnum {}
 ?>

src/Standards/Generic/Tests/Classes/DuplicateClassNameUnitTest.php

@@ -45,17 +45,18 @@ public function getWarningList($testFile='')
         switch ($testFile) {
         case 'DuplicateClassNameUnitTest.1.inc':
             return [
-                9  => 1,
                 10 => 1,
                 11 => 1,
                 12 => 1,
+                13 => 1,
             ];
             break;
         case 'DuplicateClassNameUnitTest.2.inc':
             return [
                 2 => 1,
                 3 => 1,
                 4 => 1,
+                5 => 1,
             ];
             break;
         case 'DuplicateClassNameUnitTest.5.inc':