improve test

Author: TomasVotruba

test/code/formatPreservation/args_to_variadic_remove_trailing_comma.test

@@ -1,18 +1,38 @@
 Replace args with VariadicPlaceholder should remove trailing comma
 -----
 <?php
+
 strlen(
     'test',
 );
 
 strlen('another',);
+
+strlen(1, 2, 3, ) > strlen(1 , 2 , 3 ,);
+
+strlen(
+    'multiple new lines'
+
+    ,
+);
 -----
 $stmts[0]->expr->args = [new Node\VariadicPlaceholder()];
 $stmts[1]->expr->args = [new Node\VariadicPlaceholder()];
+$stmts[2]->expr->right->args = [new Node\VariadicPlaceholder()];
+$stmts[3]->expr->args = [new Node\VariadicPlaceholder()];
 -----
 <?php
+
 strlen(
     ...
 );
 
 strlen(...);
+
+strlen(1, 2, 3, ) > strlen(...);
+
+strlen(
+    'multiple new lines'
+
+    ,
+);