Add default pragma option to Mustache_Engine.

Pragmas specified in the Mustache_Engine constructor will be enabled in all templates, regardless of the presence of pragma tags in individual templates.

test/Mustache/Test/EngineTest.php

@@ -36,6 +36,7 @@ class Mustache_Test_EngineTest extends Mustache_Test_FunctionalTestCase
             'escape'  => 'strtoupper',
             'entity_flags' => ENT_QUOTES,
             'charset' => 'ISO-8859-1',
+            'pragmas' => array(Mustache_Engine::PRAGMA_FILTERS),
         ));
 
         $this->assertSame($logger, $mustache->getLogger());
@@ -50,6 +51,7 @@ class Mustache_Test_EngineTest extends Mustache_Test_FunctionalTestCase
         $this->assertTrue($mustache->hasHelper('bar'));
         $this->assertFalse($mustache->hasHelper('baz'));
         $this->assertInstanceOf('Mustache_Cache_FilesystemCache', $mustache->getCache());
+        $this->assertEquals(array(Mustache_Engine::PRAGMA_FILTERS), $mustache->getPragmas());
     }
 
     public static function getFoo()

test/Mustache/Test/FiveThree/Functional/EngineTest.php

@@ -0,0 +1,50 @@
+<?php
+
+/*
+ * This file is part of Mustache.php.
+ *
+ * (c) 2010-2014 Justin Hileman
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+/**
+ * @group pragmas
+ * @group functional
+ */
+class Mustache_Test_FiveThree_Functional_EngineTest extends PHPUnit_Framework_TestCase
+{
+    /**
+     * @dataProvider pragmaData
+     */
+    public function testPragmasConstructorOption($pragmas, $helpers, $data, $tpl, $expect)
+    {
+        $mustache = new Mustache_Engine(array(
+            'pragmas' => $pragmas,
+            'helpers' => $helpers,
+        ));
+
+        $this->assertEquals($expect, $mustache->render($tpl, $data));
+    }
+
+    public function pragmaData()
+    {
+        $helpers = array(
+            'longdate' => function (\DateTime $value) {
+                return $value->format('Y-m-d h:m:s');
+            }
+        );
+
+        $data = array(
+            'date' => new DateTime('1/1/2000', new DateTimeZone('UTC')),
+        );
+
+        $tpl = '{{ date | longdate }}';
+
+        return array(
+            array(array(Mustache_Engine::PRAGMA_FILTERS), $helpers, $data, $tpl, '2000-01-01 12:01:00'),
+            array(array(),                                $helpers, $data, $tpl, ''                   ),
+        );
+    }
+}