Files
port-ui/tests/unit/test_i18n_sync.py
Kevin Veen-Birkenbach 747ce379cc fix(app): stop trusting X-Forwarded-For, and pin what the audit found
ProxyFix defaults x_for to 1, so ProxyFix(app.wsgi_app, x_proto=1) never
disabled it: request.remote_addr and the access log were forgeable by any
client that reached the app directly. It is x_for=0 now, asserted rather
than assumed.

A mutation audit over the change set reverted 196 deliberate behaviours
and found 47 that no test noticed. This closes the ones that carry damage:

- apod_background lost its key check, its transport guard, its status
  guard and its media-type check without a single test failing. Each one
  turns a slow or unhappy NASA into a 500 on every page.
- Untrusted values reached innerHTML through window.I18N, which the
  translation backend writes, and the modal's click handlers stacked so a
  later click opened an earlier popup's URL.
- The sync tool could ask for HTML instead of text, translate from "auto"
  instead of English, run without a timeout, store an empty translation
  that marks the string done for good, abandon 28 languages because one
  could not be written, and report success after reaching nothing.
- Neither the lint target, the CI jobs, the vendored RTL stylesheet, the
  documented environment keys, nor any of the four hardenings in
  scripts/run-e2e.sh was observed by anything.

Three of the new tests passed for the wrong reason on their first cut —
a mock that answered None whether or not the guard existed, a
raise_for_status that was never called, a string that stayed in the file
after the mutation. The audit found those too; all 24 reverts now fail.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
2026-08-22 17:19:15 +02:00

358 lines
13 KiB
Python

import shutil
import tempfile
import unittest
from pathlib import Path
from unittest.mock import Mock, patch
import yaml
from app.utils import i18n
from utils import i18n_sync
class TestCollectSources(unittest.TestCase):
def test_prose_keys_are_collected_from_nested_structures(self):
config = {
"cards": [
{"title": "Agile Coach", "text": "I lead transformations."},
{"text": "Another card."},
],
"navigation": {
"header": {
"children": [
{"name": "Apps", "description": "Application menu"},
]
}
},
"platform": {"titel": "Someone", "subtitel": "A tagline"},
}
self.assertEqual(
i18n_sync.collect_sources(config),
{
"I lead transformations.",
"Another card.",
"Application menu",
"A tagline",
},
)
def test_label_and_structural_keys_are_left_alone(self):
config = {
"name": "Mastodon",
"title": "Cybermaster",
"url": "https://example.test",
"link_text": "www.example.test",
}
self.assertEqual(i18n_sync.collect_sources(config), set())
def test_blank_values_are_ignored(self):
self.assertEqual(i18n_sync.collect_sources({"text": " "}), set())
def test_a_list_of_prose_is_collected(self):
self.assertEqual(
i18n_sync.collect_sources({"text": ["one", "two"]}), {"one", "two"}
)
class TestTranslate(unittest.TestCase):
def _session(self, ok, payload=None, status=200, text=""):
response = Mock(ok=ok, status_code=status, text=text)
response.json.return_value = payload or {}
return Mock(post=Mock(return_value=response))
def test_successful_response_returns_the_translation(self):
session = self._session(True, {"translatedText": "Hallo"})
result = i18n_sync.translate(session, "http://lt", "", "Hello", "de")
self.assertEqual(result, "Hallo")
def test_api_key_is_only_sent_when_configured(self):
session = self._session(True, {"translatedText": "Hallo"})
i18n_sync.translate(session, "http://lt", "secret", "Hello", "de")
self.assertEqual(session.post.call_args.kwargs["data"]["api_key"], "secret")
def test_no_api_key_is_sent_when_none_is_configured(self):
session = self._session(True, {"translatedText": "Hallo"})
i18n_sync.translate(session, "http://lt", "", "Hello", "de")
self.assertNotIn("api_key", session.post.call_args.kwargs["data"])
def test_failed_response_returns_none(self):
session = self._session(
False, {"translatedText": "SHOULD NOT BE USED"}, status=403, text="denied"
)
self.assertIsNone(i18n_sync.translate(session, "http://lt", "", "Hi", "de"))
def test_the_request_asks_for_plain_text_from_the_source_language(self):
session = self._session(True, {"translatedText": "Hallo"})
i18n_sync.translate(session, "http://lt", "", "Hello", "de")
data = session.post.call_args.kwargs["data"]
self.assertEqual(data["format"], "text")
self.assertEqual(data["source"], i18n.SOURCE_LANGUAGE)
self.assertEqual(data["target"], "de")
def test_the_request_is_bounded_by_a_timeout(self):
session = self._session(True, {"translatedText": "Hallo"})
i18n_sync.translate(session, "http://lt", "", "Hello", "de")
timeout = session.post.call_args.kwargs["timeout"]
self.assertIsInstance(timeout, (int, float))
self.assertGreater(timeout, 0)
def test_an_empty_translation_is_refused(self):
session = self._session(True, {"translatedText": ""})
self.assertIsNone(i18n_sync.translate(session, "http://lt", "", "Hi", "de"))
def test_a_non_json_success_response_returns_none(self):
response = Mock(ok=True)
response.json.side_effect = ValueError("no json")
session = Mock(post=Mock(return_value=response))
self.assertIsNone(i18n_sync.translate(session, "http://lt", "", "Hi", "de"))
def test_a_transport_failure_returns_none(self):
session = Mock(
post=Mock(side_effect=i18n_sync.requests.ConnectionError("reset"))
)
self.assertIsNone(i18n_sync.translate(session, "http://lt", "", "Hi", "de"))
def test_a_non_string_translation_is_refused(self):
session = self._session(True, {"translatedText": ["Hallo", "Welt"]})
self.assertIsNone(i18n_sync.translate(session, "http://lt", "", "Hi", "de"))
class TestSupportedLanguages(unittest.TestCase):
def _session(self, payload=None, side_effect=None):
response = Mock(raise_for_status=Mock())
if side_effect is not None:
response.json.side_effect = side_effect
else:
response.json.return_value = payload
return Mock(get=Mock(return_value=response))
def test_the_offered_codes_are_returned(self):
session = self._session([{"code": "de"}, {"code": "fr"}])
self.assertEqual(
i18n_sync.supported_languages("http://lt", session), {"de", "fr"}
)
def test_an_unreachable_instance_is_reported(self):
session = Mock(get=Mock(side_effect=i18n_sync.requests.ConnectTimeout("slow")))
with self.assertRaises(i18n_sync.BackendError):
i18n_sync.supported_languages("http://lt", session)
def test_an_error_status_is_reported(self):
response = Mock()
response.raise_for_status.side_effect = i18n_sync.requests.HTTPError("503")
response.json.return_value = [{"code": "de"}]
session = Mock(get=Mock(return_value=response))
with self.assertRaises(i18n_sync.BackendError):
i18n_sync.supported_languages("http://lt", session)
def test_a_non_json_listing_is_reported(self):
session = self._session(side_effect=ValueError("no json"))
with self.assertRaises(i18n_sync.BackendError):
i18n_sync.supported_languages("http://lt", session)
def test_json_of_the_wrong_shape_is_reported(self):
for payload in ({"error": "Slow down"}, ["de", "fr"], None, [{"name": "de"}]):
with self.subTest(payload=payload):
with self.assertRaises(i18n_sync.BackendError):
i18n_sync.supported_languages("http://lt", self._session(payload))
class TestLoadExisting(unittest.TestCase):
def setUp(self):
self.directory = Path(tempfile.mkdtemp())
self.addCleanup(shutil.rmtree, self.directory, True)
self.path = self.directory / "de.yaml"
def test_a_missing_file_is_an_empty_catalog(self):
self.assertEqual(i18n_sync.load_existing(self.path), {})
def test_a_readable_catalog_is_returned(self):
self.path.write_text("Hi: Hallo\n", encoding="utf-8")
self.assertEqual(i18n_sync.load_existing(self.path), {"Hi": "Hallo"})
def test_an_unparsable_catalog_is_refused(self):
self.path.write_text('Hi: "unterminated\n', encoding="utf-8")
self.assertIsNone(i18n_sync.load_existing(self.path))
def test_a_non_mapping_catalog_is_refused(self):
self.path.write_text("- a\n- b\n", encoding="utf-8")
self.assertIsNone(i18n_sync.load_existing(self.path))
def test_a_non_utf8_catalog_is_refused(self):
self.path.write_bytes(b"\xffHi: Hallo\n")
self.assertIsNone(i18n_sync.load_existing(self.path))
def test_a_directory_at_the_catalog_path_is_refused(self):
(self.directory / "sub.yaml").mkdir()
self.assertIsNone(i18n_sync.load_existing(self.directory / "sub.yaml"))
def test_an_empty_or_comment_only_catalog_is_an_empty_catalog(self):
for text in ("", "\n\n", "# only a comment\n"):
with self.subTest(text=text):
self.path.write_text(text, encoding="utf-8")
self.assertEqual(i18n_sync.load_existing(self.path), {})
class TestWriteCatalog(unittest.TestCase):
def setUp(self):
self.directory = Path(tempfile.mkdtemp())
self.addCleanup(shutil.rmtree, self.directory, True)
self.path = self.directory / "de.yaml"
def test_the_catalog_is_written_and_no_scratch_file_is_left(self):
i18n_sync.write_catalog(self.path, {"Hi": "Hallo", "Umlaut": "Grüße"})
text = self.path.read_text(encoding="utf-8")
self.assertEqual(yaml.safe_load(text), {"Hi": "Hallo", "Umlaut": "Grüße"})
self.assertIn("Grüße", text)
self.assertEqual([p.name for p in self.directory.iterdir()], ["de.yaml"])
def test_a_write_that_dies_halfway_leaves_the_previous_catalog_intact(self):
self.path.write_text("Hi: HAND-EDITED\n", encoding="utf-8")
complete = Path.write_text
def dies_halfway(target, data, *args, **kwargs):
complete(target, data[: len(data) // 2], *args, **kwargs)
raise OSError("no space left on device")
with patch.object(Path, "write_text", dies_halfway):
with self.assertRaises(OSError):
i18n_sync.write_catalog(self.path, {"Hi": "machine", "Zebra": "Zebra"})
self.assertEqual(self.path.read_text(encoding="utf-8"), "Hi: HAND-EDITED\n")
class TestSync(unittest.TestCase):
def setUp(self):
self.directory = Path(tempfile.mkdtemp())
self.addCleanup(shutil.rmtree, self.directory, True)
self.addCleanup(setattr, i18n, "CONTENT_DIR", i18n.CONTENT_DIR)
i18n.CONTENT_DIR = self.directory
self.path = self.directory / "de.yaml"
def _run(self, sources, offered=("de",), translated="UEBERSETZT"):
listing = Mock(raise_for_status=Mock())
listing.json.return_value = [{"code": code} for code in offered]
answer = Mock(ok=True)
answer.json.return_value = {"translatedText": translated}
session = Mock(get=Mock(return_value=listing), post=Mock(return_value=answer))
with patch.object(i18n_sync.requests, "Session", return_value=session):
i18n_sync.sync("http://lt", "", set(sources), ["de"], self.directory)
return session
def test_missing_entries_are_written(self):
self._run(["Hello"])
self.assertEqual(
yaml.safe_load(self.path.read_text(encoding="utf-8")),
{"Hello": "UEBERSETZT"},
)
def test_existing_entries_are_never_overwritten(self):
self.path.write_text("Hello: HAND-EDITED\n", encoding="utf-8")
session = self._run(["Hello", "World"])
catalog = yaml.safe_load(self.path.read_text(encoding="utf-8"))
self.assertEqual(catalog["Hello"], "HAND-EDITED")
self.assertEqual(session.post.call_count, 1)
def test_an_unparsable_catalog_is_left_alone(self):
broken = 'Hello: "unterminated\n'
self.path.write_text(broken, encoding="utf-8")
session = self._run(["Hello"])
self.assertEqual(self.path.read_text(encoding="utf-8"), broken)
session.post.assert_not_called()
def test_a_language_the_instance_does_not_offer_is_skipped(self):
session = self._run(["Hello"], offered=("fr",))
self.assertFalse(self.path.exists())
session.post.assert_not_called()
def test_an_empty_translation_is_not_stored(self):
self._run(["Hello"], translated="")
self.assertFalse(self.path.exists())
def test_a_run_that_translated_nothing_leaves_the_file_untouched(self):
original = "# Reviewed by a native speaker, keep the order.\nZebra: Zebra\n"
self.path.write_text(original, encoding="utf-8")
self._run(["Hello"], translated=None)
self.assertEqual(self.path.read_text(encoding="utf-8"), original)
def test_a_string_the_shipped_catalog_covers_is_not_requested(self):
ui = Path(tempfile.mkdtemp())
self.addCleanup(shutil.rmtree, ui, True)
self.addCleanup(setattr, i18n, "UI_DIR", i18n.UI_DIR)
i18n.UI_DIR = ui
(ui / "de.yaml").write_text("Close: Schliessen\n", encoding="utf-8")
session = self._run(["Close", "Hello"])
self.assertEqual(session.post.call_count, 1)
self.assertNotIn("Close", yaml.safe_load(self.path.read_text(encoding="utf-8")))
def test_a_language_that_cannot_be_written_does_not_stop_the_others(self):
listing = Mock(raise_for_status=Mock())
listing.json.return_value = [{"code": "de"}, {"code": "fr"}]
answer = Mock(ok=True)
answer.json.return_value = {"translatedText": "UEBERSETZT"}
session = Mock(get=Mock(return_value=listing), post=Mock(return_value=answer))
original = i18n_sync.write_catalog
def fails_for_german(path, catalog):
if path.name == "de.yaml":
raise OSError("read-only")
original(path, catalog)
with patch.object(i18n_sync, "write_catalog", fails_for_german):
with patch.object(i18n_sync.requests, "Session", return_value=session):
i18n_sync.sync("http://lt", "", {"Hello"}, ["de", "fr"], self.directory)
self.assertTrue((self.directory / "fr.yaml").is_file())
def test_the_catalog_directory_is_created(self):
nested = self.directory / "content"
self.directory = nested
self.path = nested / "de.yaml"
self._run(["Hello"])
self.assertTrue(self.path.is_file())
if __name__ == "__main__":
unittest.main()