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75 lines
2.6 KiB
Python
75 lines
2.6 KiB
Python
import base64
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import datetime as dt
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import logging
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import zlib
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from types import SimpleNamespace
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import pytest
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from unshackle.core.api import handlers
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from unshackle.core.api.sanitize import safe_cache_payload
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from unshackle.core.cacher import Cacher
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from unshackle.core.config import config
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from unshackle.core.remote_service import RemoteService
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pytestmark = pytest.mark.unit
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TAG = "TESTSVC"
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def b64z(text: str) -> str:
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return base64.b64encode(zlib.compress(text.encode())).decode("ascii")
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@pytest.mark.parametrize("text", ['{"a": [1, "b", null]}', '"token"'])
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def test_plain_json_is_safe(text) -> None:
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assert safe_cache_payload(text)
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@pytest.mark.parametrize(
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"text",
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[
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"not json",
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'{"py/object": "collections.OrderedDict"}',
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'{"py/type": "builtins.dict"}',
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'{"py/function": "builtins.print"}',
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'{"py/repr": "builtins/1"}',
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'{"py/reduce": [{"py/function": "builtins.print"}, {"py/tuple": ["x"]}]}',
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'{"py/object": "datetime.datetime", "__reduce__": [{"py/type": "collections.OrderedDict"}, []]}',
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'{"py/object": "datetime.datetime", "py/state": {}}',
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pytest.param("[" * 100000 + "]" * 100000, id="deep-nesting"),
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],
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)
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def test_unsafe_payload_is_refused(text) -> None:
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assert safe_cache_payload(text) is False
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def save_returned(cache_map: dict) -> None:
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RemoteService.save_returned_cache(SimpleNamespace(service_tag=TAG, log=logging.getLogger("test")), cache_map)
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@pytest.mark.parametrize(
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"write", [lambda m: handlers.write_client_cache(m, TAG), save_returned], ids=["server", "client"]
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)
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def test_writer_skips_unsafe_entry(tmp_path, monkeypatch, write) -> None:
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monkeypatch.setattr(config.directories, "cache", tmp_path)
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write({"good": b64z('{"a": 1}'), "bad": b64z('{"py/function": "builtins.print"}')})
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assert (tmp_path / TAG / "good.json").exists()
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assert not (tmp_path / TAG / "bad.json").exists()
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@pytest.mark.parametrize(
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"expiration",
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[None, dt.datetime(2030, 1, 1, 12, 0, 0), dt.datetime(2030, 1, 1, 12, 0, 0, tzinfo=dt.timezone.utc)],
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ids=["none", "naive", "aware"],
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)
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def test_real_cacher_file_round_trips(tmp_path, monkeypatch, expiration) -> None:
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monkeypatch.setattr(config.directories, "cache", tmp_path / "src")
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cache = Cacher(TAG, "tok")
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cache.set({"token": "abc", "n": [1, 2]}, expiration=expiration)
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text = cache.path.read_text(encoding="utf8")
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monkeypatch.setattr(config.directories, "cache", tmp_path / "dst")
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save_returned({"tok": b64z(text)})
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assert Cacher(TAG).get("tok").data == {"token": "abc", "n": [1, 2]}
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