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77 lines
2.8 KiB
Python
77 lines
2.8 KiB
Python
"""Tests for utils.atomic_yaml_write — crash-safe YAML file writes."""
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from unittest.mock import patch
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import pytest
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import yaml
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from utils import atomic_yaml_write
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class TestAtomicYamlWrite:
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def test_writes_valid_yaml(self, tmp_path):
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target = tmp_path / "data.yaml"
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data = {"key": "value", "nested": {"a": 1}}
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atomic_yaml_write(target, data)
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assert yaml.safe_load(target.read_text(encoding="utf-8")) == data
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def test_cleans_up_temp_file_on_baseexception(self, tmp_path):
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class SimulatedAbort(BaseException):
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pass
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target = tmp_path / "data.yaml"
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original = {"preserved": True}
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target.write_text(yaml.safe_dump(original), encoding="utf-8")
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with patch("utils.yaml.dump", side_effect=SimulatedAbort):
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with pytest.raises(SimulatedAbort):
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atomic_yaml_write(target, {"new": True})
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tmp_files = [f for f in tmp_path.iterdir() if ".tmp" in f.name]
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assert len(tmp_files) == 0
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assert yaml.safe_load(target.read_text(encoding="utf-8")) == original
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def test_appends_extra_content(self, tmp_path):
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target = tmp_path / "data.yaml"
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atomic_yaml_write(target, {"key": "value"}, extra_content="\n# comment\n")
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text = target.read_text(encoding="utf-8")
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assert "key: value" in text
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assert "# comment" in text
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def test_writes_unicode_unescaped_and_round_trips(self, tmp_path):
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"""Emoji/kaomoji are written as real UTF-8, not fragile escape sequences.
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Regression for GitHub #51356: without allow_unicode=True, PyYAML emitted
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astral-plane chars (emoji) as 8-digit `\\UXXXXXXXX` escapes inside
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multi-line double-quoted strings wrapped with `\\` continuations, which
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stricter/non-PyYAML parsers and hand-edits broke into unclosed quotes,
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corrupting the entire config.
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"""
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target = tmp_path / "config.yaml"
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# Mirrors the default personalities + skin cursor shipped in cli.py.
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data = {
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"personalities": {
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"kawaii": "kawaii desu~! (◕‿◕) ★ ♪ ヽ(>∀<☆)ノ",
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"catgirl": "nya~! (=^･ω･^=) ฅ^•ﻌ•^ฅ",
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"surfer": "Cowabunga! 🤙 totally rad bro",
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"hype": "LET'S GOOOO!!! 🔥 LEGENDARY!",
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},
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"display": {"cursor": " ▉"},
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}
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atomic_yaml_write(target, data)
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text = target.read_text(encoding="utf-8")
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# No escape artifacts of any kind — real characters on disk.
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assert "\\U" not in text
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assert "\\u" not in text
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# Real glyphs are present verbatim.
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assert "🔥" in text
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assert "(=^･ω･^=)" in text
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# And it reloads to exactly what was written.
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assert yaml.safe_load(text) == data
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