Add Template method to return template extension

Thanks to Ryan McGrath for the suggestion and initial implementation.

1 files changed, 1 insertions, 0 deletions

diff --git a/testing/tests/simple.rs b/testing/tests/simple.rs
index 95c14b1..4af2cea 100644
--- a/testing/tests/simple.rs
+++ b/testing/tests/simple.rs
@@ -27,6 +27,7 @@ fn test_variables() {
          Iñtërnâtiônàlizætiøn is important\n\
          in vars too: Iñtërnâtiônàlizætiøn"
     );
+    assert_eq!(s.extension(), Some("html"));
 }
 
 #[derive(Template)]