mirror of
https://github.com/RustPython/RustPython.git
synced 2026-10-28 10:44:36 +08:00
Luan Taraschi
dbf6e6d048
Wtf8::replace looks for the pattern with a byte search. An empty pattern
matches at every byte, so the replacement was inserted between the bytes of
a multi-byte character and the result was no longer WTF-8:
>>> "á".replace("", "-")
'-ím' # CPython: '-á-'
from_bytes_unchecked then took that as valid without looking, so every later
read of the string returned something else. An empty pattern now walks code
points instead. A pattern that is not empty stays on the byte search, which
is safe because a WTF-8 sequence never starts inside another one.
Assisted-by: Claude Code:claude-opus-5
Test snippets
This directory contains two sets of test snippets which can be run in Python.
The snippets/ directory contains functional tests, and the benchmarks/
directory contains snippets for use in benchmarking RustPython's performance.
Setup
Our testing depends on pytest, which you can install using pip.
Running
Simply run pytest -v in this directory, and the tests should run (and hopefully
pass). If it hangs for a long time, that's because it's building RustPython in
release mode, which should take less time than it would to run every test
snippet with RustPython compiled in debug mode.