def test_single_and_double_with_struct(value, only_double):
# Float and double must match the behavior of the built-in struct module
if not only_double:
assert t.Single(value).serialize() == struct.pack("<f", value)
v1, r1 = t.Single.deserialize(struct.pack("<f", value))
assert compare_with_nan(v1, t.Single(value))
assert r1 == b""
assert t.Double(value).serialize() == struct.pack("<d", value)
v2, r2 = t.Double.deserialize(struct.pack("<d", value))
assert compare_with_nan(v2, t.Double(value))
assert r2 == b""
def test_single():
value = 1.25
extra = b"ab12!"
v = t.Single(value)
ser = v.serialize()
assert t.Single.deserialize(ser) == (value, b"")
assert t.Single.deserialize(ser + extra) == (value, extra)
with pytest.raises(ValueError):
t.Double.deserialize(ser[1:])
def test_single():
v = t.Single(1.25)
ser = v.serialize()
assert t.Single.deserialize(ser) == (1.25, b'')