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SoulSync/tests/test_image_cache.py

67 lines
1.8 KiB

from __future__ import annotations
from core.image_cache import ImageCache
class FakeResponse:
def __init__(self, body: bytes, *, status_code: int = 200, content_type: str = "image/jpeg"):
self.body = body
self.status_code = status_code
self.headers = {
"Content-Type": content_type,
"Content-Length": str(len(body)),
}
self.closed = False
def iter_content(self, chunk_size=65536):
yield self.body
def close(self):
self.closed = True
def test_cache_url_for_registers_hashed_browser_path(tmp_path):
cache = ImageCache(tmp_path)
url = "https://images.example.test/cover.jpg?token=secret"
cached_url = cache.cache_url_for(url)
assert cached_url == f"/api/image-cache/{ImageCache.key_for_url(url)}"
assert "secret" not in cached_url
def test_get_url_fetches_once_then_serves_cached_file(tmp_path):
calls = []
def fetcher(url, **kwargs):
calls.append((url, kwargs))
return FakeResponse(b"fake-jpeg-bytes")
cache = ImageCache(tmp_path, fetcher=fetcher)
url = "https://images.example.test/cover.jpg"
first = cache.get_url(url)
second = cache.get_url(url)
assert first.status == "miss"
assert second.status == "hit"
assert first.path == second.path
assert first.path.read_bytes() == b"fake-jpeg-bytes"
assert first.mime_type == "image/jpeg"
assert len(calls) == 1
def test_get_url_rejects_non_image_responses(tmp_path):
cache = ImageCache(
tmp_path,
fetcher=lambda url, **kwargs: FakeResponse(b"<html></html>", content_type="text/html"),
)
try:
cache.get_url("https://images.example.test/not-image")
except Exception as exc:
assert "not an image" in str(exc)
else:
raise AssertionError("Expected non-image response to fail")