diff options
| -rw-r--r-- | helix-core/src/words.rs | 32 |
1 files changed, 32 insertions, 0 deletions
diff --git a/helix-core/src/words.rs b/helix-core/src/words.rs index 0099d56a..5ff25050 100644 --- a/helix-core/src/words.rs +++ b/helix-core/src/words.rs @@ -31,3 +31,35 @@ pub fn nth_prev_word_boundary(slice: RopeSlice, mut char_idx: usize, count: usiz char_idx + 1 } } + +#[test] +fn different_prev_word_boundary() { + use ropey::Rope; + let t = |x, y| { + let text = Rope::from(x); + let out = nth_prev_word_boundary(text.slice(..), text.len_chars() - 1, 1); + assert_eq!(text.slice(..out), y, r#"from "{}""#, x); + }; + t("abcd\nefg\nwrs", "abcd\nefg\n"); + t("abcd\nefg\n", "abcd\n"); + t("abcd\n", ""); + t("hello, world!", "hello, world"); + t("hello, world", "hello, "); + t("hello, ", "hello"); + t("hello", ""); + t("こんにちは、世界！", "こんにちは、世界！"); // TODO: punctuation + t("こんにちは、世界", "こんにちは、"); + t("こんにちは、", "こんにちは、"); // what? + t("こんにちは", ""); + t("この世界。", "この世界。"); // what? + t("この世界", ""); + t("お前はもう死んでいる", ""); + t("その300円です", ""); // TODO: should stop at 300 + t("唱k", ""); // TODO: should stop at 唱 + t("1 + 1 = 2", "1 + 1 = "); + t("1 + 1 =", "1 + 1 "); + t("1 + 1", "1 + "); + t("1 + ", "1 "); + t("1 ", ""); + t("1+1=2", "1+1="); +} |