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Diffstat (limited to 'heck/src/title.rs')
-rw-r--r-- | heck/src/title.rs | 52 |
1 files changed, 52 insertions, 0 deletions
diff --git a/heck/src/title.rs b/heck/src/title.rs new file mode 100644 index 0000000..cb48302 --- /dev/null +++ b/heck/src/title.rs @@ -0,0 +1,52 @@ +/// This trait defines a title case conversion. +/// +/// In Title Case, word boundaries are indicated by spaces, and every word is +/// capitalized. +/// +/// ## Example: +/// +/// ```rust +/// extern crate heck; +/// fn main() { +/// +/// use heck::TitleCase; +/// +/// let sentence = "We have always lived in slums and holes in the wall."; +/// assert_eq!(sentence.to_title_case(), "We Have Always Lived In Slums And Holes In The Wall"); +/// } +/// ``` +pub trait TitleCase: ToOwned { + /// Convert this type to title case. + fn to_title_case(&self) -> Self::Owned; +} + +impl TitleCase for str { + fn to_title_case(&self) -> String { + ::transform(self, ::capitalize, |s| s.push(' ')) + } +} + +#[cfg(test)] +mod tests { + use super::TitleCase; + + macro_rules! t { + ($t:ident : $s1:expr => $s2:expr) => { + #[test] + fn $t() { + assert_eq!($s1.to_title_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"); +} |