fix(raw): Stop swapping the text's order

Fixes #79

src/tags/raw_block.rs

@@ -23,11 +23,12 @@ pub fn raw_block(_tag_name: &str,
                  _options: &LiquidOptions)
                  -> Result<Box<Renderable>> {
     let content = tokens.iter().fold("".to_owned(), |a, b| {
+        a +
         match *b {
             Element::Expression(_, ref text) |
             Element::Tag(_, ref text) |
             Element::Raw(ref text) => text,
-        }.to_owned() + &a
+        }
     });
     Ok(Box::new(RawT { content: content }))
 }
@@ -36,6 +37,7 @@ pub fn raw_block(_tag_name: &str,
 mod test {
     use super::*;
     use compiler;
+    use interpreter;
 
     fn options() -> LiquidOptions {
         let mut options = LiquidOptions::default();
@@ -45,7 +47,7 @@ mod test {
     }
 
     #[test]
-    fn test_raw() {
+    fn raw_text() {
         let raw = raw_block("raw",
                             &[],
                             &vec![Element::Expression(vec![], "This is a test".to_owned())],
@@ -54,4 +56,32 @@ mod test {
         let output = raw.render(&mut Default::default()).unwrap();
         assert_eq!(output, Some("This is a test".to_owned()));
     }
+
+    #[test]
+    fn raw_escaped() {
+        let text = "{%raw%}{%if%}{%endraw%}";
+
+        let tokens = compiler::tokenize(&text).unwrap();
+        let template = compiler::parse(&tokens, &options())
+            .map(interpreter::Template::new)
+            .unwrap();
+
+        let mut context = Context::new();
+        let output = template.render(&mut context).unwrap();
+        assert_eq!(output, Some("{%if%}".to_owned()));
+    }
+
+    #[test]
+    fn raw_mixed() {
+        let text = "{%raw%}hello{%if%}world{%endraw%}";
+
+        let tokens = compiler::tokenize(&text).unwrap();
+        let template = compiler::parse(&tokens, &options())
+            .map(interpreter::Template::new)
+            .unwrap();
+
+        let mut context = Context::new();
+        let output = template.render(&mut context).unwrap();
+        assert_eq!(output, Some("hello{%if%}world".to_owned()));
+    }
 }