def test_adding_backend(self):
FileStorage.register_backend("example", ExampleFile)
self.assertEqual(FileStorage.BACKENDS["example"], ExampleFile)
fs = FileStorage("example", "filename")
recs = fs.load()
self.assertEqual(len(recs), 1)
self.assertEqual(recs[0].fields, ["a", "b"])
def run_test(self, fmt, lossy=False):
options = {"table-is-field-0": True}
filename = self.tempdir.name + "/" + fmt
fs = FileStorage(fmt, filename, options=options)
fs.store(self.data)
m = fs.load()
self.compare(self.data, m, lossy)
self.check_serialized_data(fs, filename, m)
def compression_test(self, format):
tempdir = tempfile.TemporaryDirectory()
options = {"compression": format}
magic = self.magic[format]
filename = tempdir.name + "/dtb"
fs = FileStorage("json", filename, options=options)
fs.store(self.data)
m = fs.load()
self.compare(self.data, m)
with open(filename, "rb") as fp:
header = fp.read(len(magic))
self.assertEqual(header, magic)
tempdir.cleanup()
def test_default(self):
tempdir = tempfile.TemporaryDirectory()
filename = tempdir.name + "/dtb"
fs = FileStorage("json", filename)
fs.store(self.data)
m = fs.load()
self.compare(self.data, m)
with open(filename, "rb") as fp:
header = fp.read(20)
for k, v in self.magic.items():
self.assertNotEqual(header[0 : len(v)], v)
self.assertEqual(header[0:1], b"[")
tempdir.cleanup()
def test_autodetection(self):
for i in ["sha256", "sha384", "sha512"]:
x = self.create_filestorage_hash(i)
x.fs.store([Record(["", ""])])
fs = FileStorage("csv", x.tempfile, "hash")
recs = fs.load()
self.assertEqual(len(recs), 1)
self.assertIsInstance(recs[0], Record)
self.assertEqual(recs[0].fields[:], ["", ""])
with open(x.tempfile + ".checksum", "w") as fp:
# Something other than the correct value.
fp.write("%s:2:%s\n" % (i, self.WRONG))
with self.assertRaisesRegex(newfol.exception.FilemanipError, "corrupt"):
x.fs.load()
x.tempdir.cleanup()