Implement FFI interface for PluralRanges

components/plurals/src/lib.rs

@@ -555,8 +555,8 @@ impl PluralRules {
  }
 }
 
-/// A struct which provides the ability to retrieve an appropriate [`Plural Category`] for a number
-/// range from the categories of its endpoints.
+/// A struct which provides the ability to retrieve an appropriate [`Plural Category`] for a range
+/// from the categories of its endpoints.
 ///
 /// # Examples
 ///

components/plurals/tests/ranges.rs

@@ -0,0 +1,36 @@
+// This file is part of ICU4X. For terms of use, please see the file
+// called LICENSE at the top level of the ICU4X source tree
+// (online at: https://github.com/unicode-org/icu4x/blob/main/LICENSE ).
+
+use icu_locid::locale;
+use icu_plurals::{PluralCategory, PluralRanges};
+
+#[test]
+fn test_plural_ranges() {
+ assert_eq!(
+ PluralRanges::try_new(&locale!("he").into())
+ .unwrap()
+ .category_for_range(PluralCategory::One, PluralCategory::Two),
+ PluralCategory::Other
+ );
+}
+
+#[test]
+fn test_plural_ranges_optimized_data() {
+ assert_eq!(
+ PluralRanges::try_new(&locale!("en").into())
+ .unwrap()
+ .category_for_range(PluralCategory::One, PluralCategory::Other),
+ PluralCategory::Other
+ );
+}
+
+#[test]
+fn test_plural_ranges_missing_data_fallback() {
+ assert_eq!(
+ PluralRanges::try_new(&locale!("nl").into())
+ .unwrap()
+ .category_for_range(PluralCategory::Two, PluralCategory::Many),
+ PluralCategory::Many
+ );
+}