Add languages::english::EnglishAbbreviated

src/languages/english.rs

@@ -47,3 +47,85 @@ impl Language for English {
         }
     }
 }
+
+#[derive(Default)]
+pub struct EnglishAbbreviated;
+
+impl Language for EnglishAbbreviated {
+    fn too_low(&self) -> &'static str {
+        "now"
+    }
+
+    fn too_high(&self) -> &'static str {
+        "old"
+    }
+
+    fn ago(&self) -> &'static str {
+        ""
+    }
+
+    fn get_word(&self, tu: TimeUnit, _: u64) -> &'static str {
+        use TimeUnit::*;
+        match tu {
+            Nanoseconds => "ns",
+            Microseconds => "μs",
+            Milliseconds => "ms",
+            Seconds => "s",
+            Minutes => "m",
+            Hours => "h",
+            Days => "d",
+            Weeks => "wk",
+            Months => "mo",
+            Years => "yr",
+        }
+    }
+
+    fn clone_boxed(&self) -> crate::BoxedLanguage {
+        todo!()
+    }
+
+    fn place_ago_before(&self) -> bool {
+        false
+    }
+
+    fn override_space_near_ago(&self) -> &str {
+        ""
+    }
+
+    fn place_unit_before(&self, _: u64) -> bool {
+        false
+    }
+
+    fn between_chunks(&self) -> &str {
+        " "
+    }
+
+    fn between_value_and_word(&self) -> &str {
+        ""
+    }
+}
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+
+    #[test]
+    fn test_abbreviated() {
+        fn fmt(seconds: u64) -> String {
+            crate::Formatter::with_language(EnglishAbbreviated)
+                .convert(std::time::Duration::from_secs(seconds))
+        }
+
+        assert_eq!(fmt(0), "now");
+        assert_eq!(fmt(1), "1s");
+        assert_eq!(fmt(59), "59s");
+        assert_eq!(fmt(60), "1m");
+        assert_eq!(fmt(65), "1m");
+        assert_eq!(fmt(119), "1m");
+        assert_eq!(fmt(120), "2m");
+        assert_eq!(fmt(3599), "59m");
+        assert_eq!(fmt(3600), "1h");
+        assert_eq!(fmt(1000_000), "1wk");
+        assert_eq!(fmt(1000_000_000), "31yr");
+    }
+}