commit 75a6494a1279b090b874d98fc65d9577fea5fe09
Author: Joel Pittet <joel@pittet.ca>
Date:   Sat Jan 25 10:08:33 2014 -0800

    add some test

diff --git a/core/modules/system/lib/Drupal/system/Tests/Theme/TwigFilterTest.php b/core/modules/system/lib/Drupal/system/Tests/Theme/TwigFilterTest.php
new file mode 100644
index 0000000..e69de29
diff --git a/core/modules/system/tests/modules/twig_filter_test/lib/Drupal/twig_filter_test/TwigFilterTestController.php b/core/modules/system/tests/modules/twig_filter_test/lib/Drupal/twig_filter_test/TwigFilterTestController.php
new file mode 100644
index 0000000..6d6b750
--- /dev/null
+++ b/core/modules/system/tests/modules/twig_filter_test/lib/Drupal/twig_filter_test/TwigFilterTestController.php
@@ -0,0 +1,31 @@
+<?php
+
+/**
+ * @file
+ * Contains \Drupal\twig_filter_test\TwigFilterTestController.
+ */
+
+namespace Drupal\twig_filter_test;
+
+/**
+ * Controller routines for Twig theme test routes.
+ */
+class TwigFilterTestController {
+
+
+  /**
+   * Menu callback for testing Twig filters in a Twig template.
+   */
+  public function testFilterRender() {
+    return array(
+      '#theme' => 'twig_filter_test_filter',
+      '#body' => array(
+        'arms' => array('#markup' => ' arms.'),
+        'legs' => array('#markup' => ' legs.'),
+        'head' => array('#markup' => ' head.'),
+        'stomach' => array('#markup' => ' stomach.'),
+      ),
+    );
+  }
+
+}
diff --git a/core/modules/system/tests/modules/twig_filter_test/templates/twig_filter_test.filter.html.twig b/core/modules/system/tests/modules/twig_filter_test/templates/twig_filter_test.filter.html.twig
new file mode 100644
index 0000000..3da1dd4
--- /dev/null
+++ b/core/modules/system/tests/modules/twig_filter_test/templates/twig_filter_test.filter.html.twig
@@ -0,0 +1,23 @@
+<div class="without-legs">
+  I have no legs: {{ body|without('legs') }}
+</div>
+
+<div class="body">
+  Complete with: {{ body }}
+</div>
+
+<div class="legs">
+ Ok legs only: {{ body.legs }}
+</div>
+
+<div class="without-legs-arms">
+  I have no legs or arms: {{ body|without('legs', 'arms') }}
+</div>
+
+<div class="legs">
+ Ok legs only: {{ body.legs }}
+</div>
+
+<div class="legs">
+ Complete again: {{ body }}
+</div>
diff --git a/core/modules/system/tests/modules/twig_filter_test/twig_filter_test.info.yml b/core/modules/system/tests/modules/twig_filter_test/twig_filter_test.info.yml
new file mode 100644
index 0000000..5fff058
--- /dev/null
+++ b/core/modules/system/tests/modules/twig_filter_test/twig_filter_test.info.yml
@@ -0,0 +1,7 @@
+name: 'Twig Filter Test'
+type: module
+description: 'Support module for testing Twig filters.'
+package: Testing
+version: VERSION
+core: 8.x
+# hidden: true
diff --git a/core/modules/system/tests/modules/twig_filter_test/twig_filter_test.module b/core/modules/system/tests/modules/twig_filter_test/twig_filter_test.module
new file mode 100644
index 0000000..d4d960a
--- /dev/null
+++ b/core/modules/system/tests/modules/twig_filter_test/twig_filter_test.module
@@ -0,0 +1,19 @@
+<?php
+
+/**
+ * @file
+ * Helper module for Twig extension tests.
+ */
+
+/**
+ * Implements hook_theme().
+ */
+function twig_filter_test_theme($existing, $type, $theme, $path) {
+  return array(
+    'twig_filter_test_filter' => array(
+      'variables' => array('body' => NULL),
+      'template' => 'twig_filter_test.filter',
+    ),
+  );
+}
+
diff --git a/core/modules/system/tests/modules/twig_filter_test/twig_filter_test.routing.yml b/core/modules/system/tests/modules/twig_filter_test/twig_filter_test.routing.yml
new file mode 100644
index 0000000..72b649c
--- /dev/null
+++ b/core/modules/system/tests/modules/twig_filter_test/twig_filter_test.routing.yml
@@ -0,0 +1,6 @@
+twig_filter_test.filter:
+  path: '/twig-filter-test/filter'
+  defaults:
+    _content: '\Drupal\twig_filter_test\TwigFilterTestController::testFilterRender'
+  requirements:
+    _permission: 'access content'