[librsvg: 8/23] AcceptLanguage - add an iter() method

[Federico Mena Quintero <federico src gnome org>]

commit b9158d5107111e26ecb2f0f61d8e14636cb8fb8a
Author: Federico Mena Quintero <federico gnome org>
Date:   Wed May 19 13:51:12 2021 -0500

    AcceptLanguage - add an iter() method

 src/accept_language.rs | 20 ++++++++++++++++++++
 1 file changed, 20 insertions(+)
---
diff --git a/src/accept_language.rs b/src/accept_language.rs
index 7e80b892..1cc58835 100644
--- a/src/accept_language.rs
+++ b/src/accept_language.rs
@@ -60,6 +60,10 @@ impl AcceptLanguage {
             Ok(AcceptLanguage(items.into_boxed_slice()))
         }
     }
+
+    pub fn iter(&self) -> impl Iterator<Item = (&LanguageTag, f32)> {
+        self.0.iter().map(|item| (&item.tag, item.weight.numeric()))
+    }
 }
 
 impl Item {
@@ -322,4 +326,20 @@ mod tests {
             Err(Error::InvalidWeight)
         ));
     }
+
+    #[test]
+    fn iter() {
+        let accept_language = AcceptLanguage::parse("es-MX, en; q=0.5").unwrap();
+        let mut iter = accept_language.iter();
+
+        let (tag, weight) = iter.next().unwrap();
+        assert_eq!(*tag, LanguageTag::parse("es-MX").unwrap());
+        assert_eq!(weight, 1.0);
+
+        let (tag, weight) = iter.next().unwrap();
+        assert_eq!(*tag, LanguageTag::parse("en").unwrap());
+        assert_eq!(weight, 0.5);
+
+        assert!(iter.next().is_none());
+    }
 }