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diff --git a/vendor/twig/twig/test/Twig/Tests/ErrorTest.php b/vendor/twig/twig/test/Twig/Tests/ErrorTest.php
new file mode 100644
index 000000000..b0eeca2e6
--- /dev/null
+++ b/vendor/twig/twig/test/Twig/Tests/ErrorTest.php
@@ -0,0 +1,211 @@
+<?php
+
+/*
+ * This file is part of Twig.
+ *
+ * (c) Fabien Potencier
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+class Twig_Tests_ErrorTest extends PHPUnit_Framework_TestCase
+{
+    public function testErrorWithObjectFilename()
+    {
+        $error = new Twig_Error('foo');
+        $error->setSourceContext(new Twig_Source('', new SplFileInfo(__FILE__)));
+
+        $this->assertContains('test'.DIRECTORY_SEPARATOR.'Twig'.DIRECTORY_SEPARATOR.'Tests'.DIRECTORY_SEPARATOR.'ErrorTest.php', $error->getMessage());
+    }
+
+    public function testErrorWithArrayFilename()
+    {
+        $error = new Twig_Error('foo');
+        $error->setSourceContext(new Twig_Source('', array('foo' => 'bar')));
+
+        $this->assertEquals('foo in {"foo":"bar"}', $error->getMessage());
+    }
+
+    public function testTwigExceptionGuessWithMissingVarAndArrayLoader()
+    {
+        $loader = new Twig_Loader_Array(array(
+            'base.html' => '{% block content %}{% endblock %}',
+            'index.html' => <<<EOHTML
+{% extends 'base.html' %}
+{% block content %}
+    {{ foo.bar }}
+{% endblock %}
+{% block foo %}
+    {{ foo.bar }}
+{% endblock %}
+EOHTML
+        ));
+        $twig = new Twig_Environment($loader, array('strict_variables' => true, 'debug' => true, 'cache' => false));
+
+        $template = $twig->loadTemplate('index.html');
+        try {
+            $template->render(array());
+
+            $this->fail();
+        } catch (Twig_Error_Runtime $e) {
+            $this->assertEquals('Variable "foo" does not exist in "index.html" at line 3.', $e->getMessage());
+            $this->assertEquals(3, $e->getTemplateLine());
+            $this->assertEquals('index.html', $e->getSourceContext()->getName());
+        }
+    }
+
+    public function testTwigExceptionGuessWithExceptionAndArrayLoader()
+    {
+        $loader = new Twig_Loader_Array(array(
+            'base.html' => '{% block content %}{% endblock %}',
+            'index.html' => <<<EOHTML
+{% extends 'base.html' %}
+{% block content %}
+    {{ foo.bar }}
+{% endblock %}
+{% block foo %}
+    {{ foo.bar }}
+{% endblock %}
+EOHTML
+        ));
+        $twig = new Twig_Environment($loader, array('strict_variables' => true, 'debug' => true, 'cache' => false));
+
+        $template = $twig->loadTemplate('index.html');
+        try {
+            $template->render(array('foo' => new Twig_Tests_ErrorTest_Foo()));
+
+            $this->fail();
+        } catch (Twig_Error_Runtime $e) {
+            $this->assertEquals('An exception has been thrown during the rendering of a template ("Runtime error...") in "index.html" at line 3.', $e->getMessage());
+            $this->assertEquals(3, $e->getTemplateLine());
+            $this->assertEquals('index.html', $e->getSourceContext()->getName());
+        }
+    }
+
+    public function testTwigExceptionGuessWithMissingVarAndFilesystemLoader()
+    {
+        $loader = new Twig_Loader_Filesystem(dirname(__FILE__).'/Fixtures/errors');
+        $twig = new Twig_Environment($loader, array('strict_variables' => true, 'debug' => true, 'cache' => false));
+
+        $template = $twig->loadTemplate('index.html');
+        try {
+            $template->render(array());
+
+            $this->fail();
+        } catch (Twig_Error_Runtime $e) {
+            $this->assertEquals('Variable "foo" does not exist.', $e->getMessage());
+            $this->assertEquals(3, $e->getTemplateLine());
+            $this->assertEquals('index.html', $e->getSourceContext()->getName());
+            $this->assertEquals(3, $e->getLine());
+            $this->assertEquals(strtr(dirname(__FILE__).'/Fixtures/errors/index.html', '/', DIRECTORY_SEPARATOR), $e->getFile());
+        }
+    }
+
+    public function testTwigExceptionGuessWithExceptionAndFilesystemLoader()
+    {
+        $loader = new Twig_Loader_Filesystem(dirname(__FILE__).'/Fixtures/errors');
+        $twig = new Twig_Environment($loader, array('strict_variables' => true, 'debug' => true, 'cache' => false));
+
+        $template = $twig->loadTemplate('index.html');
+        try {
+            $template->render(array('foo' => new Twig_Tests_ErrorTest_Foo()));
+
+            $this->fail();
+        } catch (Twig_Error_Runtime $e) {
+            $this->assertEquals('An exception has been thrown during the rendering of a template ("Runtime error...").', $e->getMessage());
+            $this->assertEquals(3, $e->getTemplateLine());
+            $this->assertEquals('index.html', $e->getSourceContext()->getName());
+            $this->assertEquals(3, $e->getLine());
+            $this->assertEquals(strtr(dirname(__FILE__).'/Fixtures/errors/index.html', '/', DIRECTORY_SEPARATOR), $e->getFile());
+        }
+    }
+
+    /**
+     * @dataProvider getErroredTemplates
+     */
+    public function testTwigExceptionAddsFileAndLine($templates, $name, $line)
+    {
+        $loader = new Twig_Loader_Array($templates);
+        $twig = new Twig_Environment($loader, array('strict_variables' => true, 'debug' => true, 'cache' => false));
+
+        $template = $twig->loadTemplate('index');
+
+        try {
+            $template->render(array());
+
+            $this->fail();
+        } catch (Twig_Error_Runtime $e) {
+            $this->assertEquals(sprintf('Variable "foo" does not exist in "%s" at line %d.', $name, $line), $e->getMessage());
+            $this->assertEquals($line, $e->getTemplateLine());
+            $this->assertEquals($name, $e->getSourceContext()->getName());
+        }
+
+        try {
+            $template->render(array('foo' => new Twig_Tests_ErrorTest_Foo()));
+
+            $this->fail();
+        } catch (Twig_Error_Runtime $e) {
+            $this->assertEquals(sprintf('An exception has been thrown during the rendering of a template ("Runtime error...") in "%s" at line %d.', $name, $line), $e->getMessage());
+            $this->assertEquals($line, $e->getTemplateLine());
+            $this->assertEquals($name, $e->getSourceContext()->getName());
+        }
+    }
+
+    public function getErroredTemplates()
+    {
+        return array(
+            // error occurs in a template
+            array(
+                array(
+                    'index' => "\n\n{{ foo.bar }}\n\n\n{{ 'foo' }}",
+                ),
+                'index', 3,
+            ),
+
+            // error occurs in an included template
+            array(
+                array(
+                    'index' => "{% include 'partial' %}",
+                    'partial' => '{{ foo.bar }}',
+                ),
+                'partial', 1,
+            ),
+
+            // error occurs in a parent block when called via parent()
+            array(
+                array(
+                    'index' => "{% extends 'base' %}
+                    {% block content %}
+                        {{ parent() }}
+                    {% endblock %}",
+                    'base' => '{% block content %}{{ foo.bar }}{% endblock %}',
+                ),
+                'base', 1,
+            ),
+
+            // error occurs in a block from the child
+            array(
+                array(
+                    'index' => "{% extends 'base' %}
+                    {% block content %}
+                        {{ foo.bar }}
+                    {% endblock %}
+                    {% block foo %}
+                        {{ foo.bar }}
+                    {% endblock %}",
+                    'base' => '{% block content %}{% endblock %}',
+                ),
+                'index', 3,
+            ),
+        );
+    }
+}
+
+class Twig_Tests_ErrorTest_Foo
+{
+    public function bar()
+    {
+        throw new Exception('Runtime error...');
+    }
+}