def compare(self, current_data, all_data, vf, version):
# GH12277 encoding default used to be latin-1, now utf-8
if LooseVersion(version) < '0.18.0':
data = read_msgpack(vf, encoding='latin-1')
else:
data = read_msgpack(vf)
self.check_min_structure(data, version)
for typ, dv in data.items():
assert typ in all_data, ('unpacked data contains '
'extra key "{0}"'.format(typ))
for dt, result in dv.items():
assert dt in current_data[typ], ('data["{0}"] contains extra '
'key "{1}"'.format(typ, dt))
try:
expected = current_data[typ][dt]
except KeyError:
continue
# use a specific comparator
# if available
comp_method = "compare_{typ}_{dt}".format(typ=typ, dt=dt)
comparator = getattr(self, comp_method, None)
if comparator is not None:
comparator(result, expected, typ, version)
else:
check_arbitrary(result, expected)
return data
def test_string_io(self):
df = DataFrame(np.random.randn(10, 2))
s = df.to_msgpack(None)
result = read_msgpack(s)
tm.assert_frame_equal(result, df)
s = df.to_msgpack()
result = read_msgpack(s)
tm.assert_frame_equal(result, df)
s = df.to_msgpack()
result = read_msgpack(compat.BytesIO(s))
tm.assert_frame_equal(result, df)
s = to_msgpack(None, df)
result = read_msgpack(s)
tm.assert_frame_equal(result, df)
with ensure_clean(self.path) as p:
s = df.to_msgpack()
fh = open(p, 'wb')
fh.write(s)
fh.close()
result = read_msgpack(p)
tm.assert_frame_equal(result, df)
def test_iterator(self):
l = [
self.frame['float'], self.frame['float'].A, self.frame['float'].B,
None
]
with ensure_clean(self.path) as path:
to_msgpack(path, *l)
for i, packed in enumerate(read_msgpack(path, iterator=True)):
check_arbitrary(packed, l[i])
def test_invalid_arg(self):
# GH10369
class A(object):
def __init__(self):
self.read = 0
with pytest.raises(ValueError):
read_msgpack(path_or_buf=None)
with pytest.raises(ValueError):
read_msgpack(path_or_buf={})
with pytest.raises(ValueError):
read_msgpack(path_or_buf=A())
def test_iterator_with_string_io(self):
dfs = [DataFrame(np.random.randn(10, 2)) for i in range(5)]
s = to_msgpack(None, *dfs)
for i, result in enumerate(read_msgpack(s, iterator=True)):
tm.assert_frame_equal(result, dfs[i])
def encode_decode(self, x, compress=None, **kwargs):
with ensure_clean(self.path) as p:
to_msgpack(p, x, compress=compress, **kwargs)
return read_msgpack(p, **kwargs)