def test_append(ctx):
contents = b"meow!\n"
additional_contents = b"purr\n"
with ctx() as path:
with bf.LocalBlobFile(path, "ab") as w:
w.write(contents)
with bf.LocalBlobFile(path, "ab") as w:
w.write(additional_contents)
with bf.BlobFile(path, "rb") as r:
assert r.read() == contents + additional_contents
def test_cache_dir(ctx):
cache_dir = tempfile.mkdtemp()
contents = b"meow!"
alternative_contents = b"purr!"
with ctx() as path:
with bf.BlobFile(path, mode="wb") as f:
f.write(contents)
with bf.LocalBlobFile(path, mode="rb", cache_dir=cache_dir) as f:
assert f.read() == contents
content_hash = hashlib.md5(contents).hexdigest()
cache_path = bf.join(cache_dir, content_hash, bf.basename(path))
with open(cache_path, "rb") as f:
assert f.read() == contents
# alter the cached file to make sure we are not re-reading the remote file
with open(cache_path, "wb") as f:
f.write(alternative_contents)
with bf.LocalBlobFile(path, mode="rb", cache_dir=cache_dir) as f:
assert f.read() == alternative_contents