Update handlebars to ^1. Remove eq helper and update json-format helper, add test.

Cargo.toml

@@ -4,5 +4,5 @@ version = "0.1.0"
 authors = ["Adrian Malacoda <adrian.malacoda@monarch-pass.net>"]
 
 [dependencies]
-handlebars = "0.32.2"
+handlebars = "^1"
 serde_json = "^1.0.0"

src/lib.rs

@@ -1,25 +1,34 @@
 extern crate handlebars;
-use serde_json::Value;
-use handlebars::{Handlebars, Helper, HelperDef, RenderContext, RenderError};
+use handlebars::{Context, Output, Handlebars, Helper, RenderContext, RenderError};
 
+#[macro_use]
 extern crate serde_json;
 
-fn json_format_helper(helper: &Helper, _: &Handlebars, render_context: &mut RenderContext) -> Result<(), RenderError> {
+fn json_format_helper(helper: &Helper, _: &Handlebars, _: &Context, _: &mut RenderContext, out: &mut Output) -> Result<(), RenderError> {
     let param = helper.param(0).ok_or(RenderError::new("Param 0 is required for format helper.",),)?;
-    render_context.writer.write(param.value().to_string().into_bytes().as_ref())?;
+    out.write(&param.value().to_string())?;
     Ok(())
 }
 
-struct EqHelper;
-impl HelperDef for EqHelper {
-    fn call_inner(&self, helper: &Helper, _: &Handlebars, _: &mut RenderContext) -> Result<Option<Value>, RenderError> {
-        let param1 = helper.param(0).ok_or(RenderError::new("Param 0 is required for eq helper.",),)?.value();
-        let param2 = helper.param(1).ok_or(RenderError::new("Param 1 is required for eq helper.",),)?.value();
-        Ok(Some(Value::Bool(param1 == param2)))
-    }
-}
-
 pub fn register(handle: &mut Handlebars) {
     handle.register_helper("JSONstringify", Box::new(json_format_helper));
-    handle.register_helper("eq", Box::new(EqHelper));
+}
+
+#[cfg(test)]
+mod tests {
+    use Handlebars;
+    use register;
+
+    #[test]
+    fn test_stringify() {
+        let mut handlebars = Handlebars::new();
+        register(&mut handlebars);
+
+        println!("{:?}", handlebars.render_template("FOO: {{JSONstringify foo}}", &json!({
+            "foo": {
+                "bar": 1,
+                "baz": 2
+            }
+        })).unwrap());
+    }
 }