1 files changed, 49 insertions, 0 deletions
diff --git a/vendor/ucd-parse/src/line_break.rs b/vendor/ucd-parse/src/line_break.rs
new file mode 100644
index 000000000..aa62fcb9e
--- /dev/null
+++ b/vendor/ucd-parse/src/line_break.rs
@@ -0,0 +1,49 @@
+use std::path::Path;
+use std::str::FromStr;
+
+use crate::common::{parse_break_test, UcdFile};
+use crate::error::Error;
+
+/// A single row in the `auxiliary/LineBreakTest.txt` file.
+///
+/// This file defines tests for the line break algorithm.
+#[derive(Clone, Debug, Default, Eq, PartialEq)]
+pub struct LineBreakTest {
+    /// Each string is a UTF-8 encoded group of codepoints that make up a
+    /// single line.
+    pub lines: Vec<String>,
+    /// A human readable description of this test.
+    pub comment: String,
+}
+
+impl UcdFile for LineBreakTest {
+    fn relative_file_path() -> &'static Path {
+        Path::new("auxiliary/LineBreakTest.txt")
+    }
+}
+
+impl FromStr for LineBreakTest {
+    type Err = Error;
+
+    fn from_str(line: &str) -> Result<LineBreakTest, Error> {
+        let (groups, comment) = parse_break_test(line)?;
+        Ok(LineBreakTest { lines: groups, comment })
+    }
+}
+
+#[cfg(test)]
+mod tests {
+    use super::LineBreakTest;
+
+    #[test]
+    fn parse_test() {
+        let line = "× 1F1F7 × 1F1FA ÷ 1F1F8 × 1F1EA ÷   #  × [0.3] REGIONAL INDICATOR SYMBOL LETTER R (RI) × [30.11] REGIONAL INDICATOR SYMBOL LETTER U (RI) ÷ [30.13] REGIONAL INDICATOR SYMBOL LETTER S (RI) × [30.11] REGIONAL INDICATOR SYMBOL LETTER E (RI) ÷ [0.3]";
+
+        let row: LineBreakTest = line.parse().unwrap();
+        assert_eq!(
+            row.lines,
+            vec!["\u{1F1F7}\u{1F1FA}", "\u{1F1F8}\u{1F1EA}",]
+        );
+        assert!(row.comment.ends_with("(RI) ÷ [0.3]"));
+    }
+}