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diff --git a/0.3.3/src/shouty_kebab.rs b/0.3.3/src/shouty_kebab.rs
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+use crate::{transform, uppercase};
+
+/// This trait defines a shouty kebab case conversion.
+///
+/// In SHOUTY-KEBAB-CASE, word boundaries are indicated by hyphens and all
+/// words are in uppercase.
+///
+/// ## Example:
+///
+/// ```rust
+/// use heck::ShoutyKebabCase;
+///
+/// let sentence = "We are going to inherit the earth.";
+/// assert_eq!(sentence.to_shouty_kebab_case(), "WE-ARE-GOING-TO-INHERIT-THE-EARTH");
+/// ```
+pub trait ShoutyKebabCase: ToOwned {
+ /// Convert this type to shouty kebab case.
+ fn to_shouty_kebab_case(&self) -> Self::Owned;
+}
+
+impl ShoutyKebabCase for str {
+ fn to_shouty_kebab_case(&self) -> Self::Owned {
+ transform(self, uppercase, |s| s.push('-'))
+ }
+}
+
+#[cfg(test)]
+mod tests {
+ use super::ShoutyKebabCase;
+
+ macro_rules! t {
+ ($t:ident : $s1:expr => $s2:expr) => {
+ #[test]
+ fn $t() {
+ assert_eq!($s1.to_shouty_kebab_case(), $s2)
+ }
+ };
+ }
+
+ t!(test1: "CamelCase" => "CAMEL-CASE");
+ t!(test2: "This is Human case." => "THIS-IS-HUMAN-CASE");
+ t!(test3: "MixedUP CamelCase, with some Spaces" => "MIXED-UP-CAMEL-CASE-WITH-SOME-SPACES");
+ t!(test4: "mixed_up_ snake_case with some _spaces" => "MIXED-UP-SNAKE-CASE-WITH-SOME-SPACES");
+ t!(test5: "kebab-case" => "KEBAB-CASE");
+ t!(test6: "SHOUTY_SNAKE_CASE" => "SHOUTY-SNAKE-CASE");
+ t!(test7: "snake_case" => "SNAKE-CASE");
+ t!(test8: "this-contains_ ALLKinds OfWord_Boundaries" => "THIS-CONTAINS-ALL-KINDS-OF-WORD-BOUNDARIES");
+ t!(test9: "XΣXΣ baffle" => "XΣXΣ-BAFFLE");
+ t!(test10: "XMLHttpRequest" => "XML-HTTP-REQUEST");
+ t!(test11: "SHOUTY-KEBAB-CASE" => "SHOUTY-KEBAB-CASE");
+}