def test_formats_for_obj():
arr = np.ndarray(3)
fmt = FormatRegistry.for_obj(arr)[0]
assert 'npz' in fmt.handled_extensions
assert FormatRegistry.for_ext('npy')[0] is fmt
expected_string_fmt_names = ['utf-8', 'unicode', 'json']
found_string_fmt_names = list(f.name
for f in FormatRegistry.for_obj('blah'))
assert found_string_fmt_names == expected_string_fmt_names
bytes_obj = fmt.serialize(arr)[0]
assert np.array_equal(fmt.deserialize(bytes_obj, ), arr)
def test_formats_for_ext():
fmt = FormatRegistry.for_ext('json')[0]
assert fmt.serialize({'blah': 'blah'})[0] == b'{"blah": "blah"}'
assert fmt.deserialize(b'{"meow": "mix"}', ) == {'meow': 'mix'}