rhg: demonstrate a bug in path_encode
The bug means that long filenames at the root of the tree are encoded
incorrectly by rhg, so rhg crashes when trying to access them.
--- a/rust/hg-core/src/revlog/path_encode.rs Thu Feb 16 14:43:46 2023 +0000
+++ b/rust/hg-core/src/revlog/path_encode.rs Thu Feb 16 14:54:34 2023 +0000
@@ -643,3 +643,22 @@
hash_encode(path)
}
}
+
+#[cfg(test)]
+mod tests {
+ use super::*;
+ use crate::utils::hg_path::HgPathBuf;
+
+ // expected failure
+ #[test]
+ #[should_panic]
+ fn test_long_filename_at_root() {
+ let input = b"data/ABCDEFGHIJABCDEFGHIJABCDEFGHIJABCDEFGHIJABCDEFGHIJABCDEFGHIJ.i";
+ let expected = b"dh/abcdefghijabcdefghijabcdefghijabcdefghijabcdefghijabcdefghij.i708243a2237a7afae259ea3545a72a2ef11c247b.i";
+ let res = path_encode(input);
+ assert_eq!(
+ HgPathBuf::from_bytes(&res),
+ HgPathBuf::from_bytes(expected)
+ );
+ }
+}