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- pub fn split_first<'a>(line: &'a str) -> Option<(&'a str, &'a str)> {
- match line.find('\t') {
- Some(i) => Some((&line[0..i], &line[(i+1)..])),
- None => None
- }
- }
- #[test]
- fn split_empty() {
- assert_eq!(split_first(""), None)
- }
- #[test]
- fn split_tab() {
- assert_eq!(split_first("foo\tbar"), Some(("foo", "bar")))
- }
- #[test]
- fn split_end() {
- assert_eq!(split_first("foo\t"), Some(("foo", "")))
- }
- #[test]
- fn split_2() {
- assert_eq!(split_first("foo\tbar\tblatz"), Some(("foo", "bar\tblatz")))
- }
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