PHP/DiscouragedPHPFunctions: add tests for namespaced names

Author: rodrigoprimo

WordPress/Tests/PHP/DiscouragedPHPFunctionsUnitTest.inc

@@ -1,12 +1,12 @@
 <?php
 
-
-
-
-
-
+// Safeguard against false positives on namespaced function calls.
+MyNamespace\serialize( $value );
+\MyNamespace\serialize( $value );
+namespace\serialize( $value ); // The sniff should start flagging this once it can resolve relative namespaces.
 
 serialize(); // Warning.
+\serialize( $value ); // Warning.
 unserialize(); // Warning.
 
 urlencode(); // Warning.

WordPress/Tests/PHP/DiscouragedPHPFunctionsUnitTest.php

@@ -37,6 +37,7 @@ public function getErrorList() {
 	 */
 	public function getWarningList() {
 		return array(
+			8  => 1,
 			9  => 1,
 			10 => 1,
 			12 => 1,