def decorated(
dirname: str,
populate: bool,
hash_empty: bool,
fast: bool,
resume: bool,
threads: int,
):
dirname = os.path.abspath(dirname)
if resume or not populate:
dirinfo = DirInfo.cached(dirname)
if dirinfo.file_count == 0:
populate = True
else:
dirinfo = DirInfo(dirname)
if populate:
dirinfo.populate(
no_empty=not hash_empty,
fast=fast,
resume=resume,
threads=threads,
progress=tqdm,
)
filename = dirinfo.save()
tqdm.write(f'Written {filename}')
return func(dirinfo)
def test_serialisation(tmp_path):
"""
Test failure modes. Success is tested in check_everything.
"""
subdir = (tmp_path / 'sub')
jsonfile = (tmp_path / 'sub.dirinfo.json')
(subdir / 'dir').mkdir(parents=True)
dirinfo = DirInfo(subdir)
assert dirinfo.save() == os.fspath(jsonfile)
# Not exactly a requirement, but for the tests to work we need this.
assert jsonfile.exists()
# If this fails, then testing that the bad cases fail is kind of pointless.
assert DirInfo.load(subdir).base == os.fspath(subdir)
# Make sure the encoder isn't accidentally used for something it can't handle.
with pytest.raises(TypeError):
json.dumps(object(), cls=Encoder)
# Make sure bad json file contents are rejected
def bad_jsonfile(jsondata):
with open(jsonfile, 'w', encoding='utf8') as outfile:
json.dump(jsondata, outfile)
with pytest.raises(ValueError):
DirInfo.load(subdir)
bad_jsonfile({'foo': 'bar'})
bad_jsonfile(None)
# If the serialised base doesn't match the actual location, then something
# is wrong and we should refuse to load it.
assert dirinfo.save() == os.fspath(jsonfile)
with open(jsonfile, 'r', encoding='utf8') as infile:
jsondata = json.load(infile)
jsondata['base'] += 'X'
bad_jsonfile(jsondata)
# If there's no data then load() fails, but cached() succeeds.
jsonfile.unlink()
with pytest.raises(FileNotFoundError):
DirInfo.load(subdir)
assert DirInfo.cached(subdir).base == subdir