bug symfony#20767 [Cache] Fix dumping SplDoublyLinkedList iter mode (nicolas-grekas)

This PR was merged into the 2.7 branch.

Discussion
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[Cache] Fix dumping SplDoublyLinkedList iter mode

| Q             | A
| ------------- | ---
| Branch?       | 2.7
| Bug fix?      | yes
| New feature?  | no
| BC breaks?    | no
| Deprecations? | no
| Tests pass?   | yes
| Fixed tickets | symfony#20718
| License       | MIT
| Doc PR        | -

Commits
-------

bfe149f [Cache] Fix dumping SplDoublyLinkedList iter mode

Author: nicolas-grekas

src/Symfony/Component/VarDumper/Caster/SplCaster.php

@@ -64,7 +64,7 @@ public static function castDoublyLinkedList(\SplDoublyLinkedList $c, array $a, S
         $c->setIteratorMode(\SplDoublyLinkedList::IT_MODE_KEEP | $mode & ~\SplDoublyLinkedList::IT_MODE_DELETE);
 
         $a += array(
-            $prefix.'mode' => new ConstStub((($mode & \SplDoublyLinkedList::IT_MODE_LIFO) ? 'IT_MODE_LIFO' : 'IT_MODE_FIFO').' | '.(($mode & \SplDoublyLinkedList::IT_MODE_KEEP) ? 'IT_MODE_KEEP' : 'IT_MODE_DELETE'), $mode),
+            $prefix.'mode' => new ConstStub((($mode & \SplDoublyLinkedList::IT_MODE_LIFO) ? 'IT_MODE_LIFO' : 'IT_MODE_FIFO').' | '.(($mode & \SplDoublyLinkedList::IT_MODE_DELETE) ? 'IT_MODE_DELETE' : 'IT_MODE_KEEP'), $mode),
             $prefix.'dllist' => iterator_to_array($c),
         );
         $c->setIteratorMode($mode);

src/Symfony/Component/VarDumper/Tests/Caster/SplCasterTest.php

@@ -0,0 +1,43 @@
+<?php
+
+/*
+ * This file is part of the Symfony package.
+ *
+ * (c) Fabien Potencier <fabien@symfony.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Symfony\Component\VarDumper\Tests\Caster;
+
+use Symfony\Component\VarDumper\Test\VarDumperTestCase;
+
+class SplCasterTest extends VarDumperTestCase
+{
+    /**
+     * @dataProvider provideCastSplDoublyLinkedList
+     */
+    public function testCastSplDoublyLinkedList($modeValue, $modeDump)
+    {
+        $var = new \SplDoublyLinkedList();
+        $var->setIteratorMode($modeValue);
+        $dump = <<<EOTXT
+SplDoublyLinkedList {
+%Amode: $modeDump
+  dllist: []
+}
+EOTXT;
+        $this->assertDumpMatchesFormat($dump, $var);
+    }
+
+    public function provideCastSplDoublyLinkedList()
+    {
+        return array(
+            array(\SplDoublyLinkedList::IT_MODE_FIFO, 'IT_MODE_FIFO | IT_MODE_KEEP'),
+            array(\SplDoublyLinkedList::IT_MODE_LIFO, 'IT_MODE_LIFO | IT_MODE_KEEP'),
+            array(\SplDoublyLinkedList::IT_MODE_FIFO | \SplDoublyLinkedList::IT_MODE_DELETE, 'IT_MODE_FIFO | IT_MODE_DELETE'),
+            array(\SplDoublyLinkedList::IT_MODE_LIFO | \SplDoublyLinkedList::IT_MODE_DELETE, 'IT_MODE_LIFO | IT_MODE_DELETE'),
+        );
+    }
+}