diff options
Diffstat (limited to '')
| -rw-r--r-- | askama_shared/src/lib.rs | 23 | 
1 files changed, 21 insertions, 2 deletions
| diff --git a/askama_shared/src/lib.rs b/askama_shared/src/lib.rs index b656c53..ecf3d07 100644 --- a/askama_shared/src/lib.rs +++ b/askama_shared/src/lib.rs @@ -29,7 +29,7 @@ mod parser;  /// Main `Template` trait; implementations are generally derived  ///  /// If you need an object-safe template, use [`DynTemplate`]. -pub trait Template { +pub trait Template: fmt::Display {      /// Helper method which allocates a new `String` and renders into it      fn render(&self) -> Result<String> {          let mut buf = String::with_capacity(Self::SIZE_HINT); @@ -92,6 +92,12 @@ impl<T: Template> DynTemplate for T {      }  } +impl fmt::Display for dyn DynTemplate { +    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result { +        self.dyn_render_into(f).map_err(|_| ::std::fmt::Error {}) +    } +} +  #[derive(Debug)]  struct Config<'a> {      dirs: Vec<PathBuf>, @@ -603,10 +609,23 @@ mod tests {              const MIME_TYPE: &'static str = "text/plain; charset=utf-8";          } +        impl fmt::Display for Test { +            #[inline] +            fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result { +                self.render_into(f).map_err(|_| fmt::Error {}) +            } +        } +          fn render(t: &dyn DynTemplate) -> String {              t.dyn_render().unwrap()          } -        assert_eq!(render(&Test), "test"); +        let test = &Test as &dyn DynTemplate; + +        assert_eq!(render(test), "test"); + +        assert_eq!(test.to_string(), "test"); + +        assert_eq!(format!("{}", test), "test");      }  } | 
