Trailing comma is required in multi-line arrays (#53)

Author: thewilkybarkid

src/Libero/ruleset.xml

@@ -25,6 +25,7 @@
     <rule ref="Generic.PHP.LowerCaseType"/>
     <rule ref="PEAR.WhiteSpace.ObjectOperatorIndent"/>
     <rule ref="SlevomatCodingStandard.Arrays.DisallowImplicitArrayCreation"/>
+    <rule ref="SlevomatCodingStandard.Arrays.TrailingArrayComma"/>
     <rule ref="SlevomatCodingStandard.Classes.ClassConstantVisibility">
         <properties>
             <property name="fixable" value="true"/>

tests/cases/php/array-comma

@@ -0,0 +1,27 @@
+---DESCRIPTION---
+Trailing comma is required in multi-line arrays
+---CONTENTS---
+<?php
+
+declare(strict_types=1);
+
+['foo', 'bar'];
+
+[
+    'baz',
+    'qux'
+];
+
+---FIXED---
+<?php
+
+declare(strict_types=1);
+
+['foo', 'bar'];
+
+[
+    'baz',
+    'qux',
+];
+
+---