[feature/twig] Add simple test to make sure Twig filters/tags are working

PHPBB3-11598

tests/template/template_test.php

@@ -309,6 +309,13 @@ class phpbb_template_template_test extends phpbb_template_template_test_case
 				"a\nb\nc\nd",
 			),
 			*/
+			array(
+				'twig.html',
+				array('VARIABLE' => 'FOObar',),
+				array(),
+				array(),
+				"13FOOBAR|foobar",
+			),
 		);
 	}
 

tests/template/templates/twig.html

@@ -0,0 +1,6 @@
+<!-- EXTENDS "twig_parent.html" -->
+
+<!-- BLOCK overwritten -->
+3{VARIABLE|upper}|{VARIABLE|lower}
+<!-- ENDBLOCK -->
+

tests/template/templates/twig_parent.html

@@ -0,0 +1,7 @@
+<!-- BLOCK notoverwritten -->
+1
+<!-- ENDBLOCK -->
+
+<!-- BLOCK overwritten -->
+2
+<!-- ENDBLOCK -->