Tests/EnumCaseTest: activate three test cases

These test cases already existed in the test case file, but were not being run as tests.

Fixed now.

Author: jrfnl

tests/Core/Tokenizer/EnumCaseTest.php

@@ -149,6 +149,9 @@ public static function dataKeywordAsEnumCaseNameShouldBeString()
             ['/* testKeywordAsEnumCaseNameShouldBeString2 */'],
             ['/* testKeywordAsEnumCaseNameShouldBeString3 */'],
             ['/* testKeywordAsEnumCaseNameShouldBeString4 */'],
+            ['/* testKeywordAsEnumCaseNameShouldBeString5 */'],
+            ['/* testKeywordAsEnumCaseNameShouldBeString6 */'],
+            ['/* testKeywordAsEnumCaseNameShouldBeString7 */'],
         ];
 
     }//end dataKeywordAsEnumCaseNameShouldBeString()