def test_underscores():
for lit in VALID_UNDERSCORE_LITERALS:
if not any(ch in lit for ch in "jJxXoObB"):
assert Float(lit) == eval(lit)
# TODO this should work!!!
assert Float(lit) == Float(lit.replace("_", ""))
for lit in INVALID_UNDERSCORE_LITERALS:
if lit in ("0_7", "09_99"): # octals are not recognized here
continue
if not any(ch in lit for ch in "jJxXoObB"):
with pytest.raises(ValueError):
Float(lit)
# Additional test cases; nan and inf are never valid as literals,
# only in the Float() constructor, but we don't allow underscores
# in or around them.
with pytest.raises(ValueError):
Float("_NaN")
with pytest.raises(ValueError):
Float("Na_N")
with pytest.raises(ValueError):
Float("IN_F")
with pytest.raises(ValueError):
Float("-_INF")
with pytest.raises(ValueError):
Float("-INF_")
# Check that we handle bytes values correctly.
with pytest.raises(ValueError):
Float(b"0_.\xff9")
def test_non_numeric_input_types() -> None:
# Test possible non-numeric types for the argument x, including
# subclasses of the explicitly documented accepted types.
class CustomStr(str):
pass
class CustomBytes(bytes):
pass
class CustomByteArray(bytearray):
pass
factories = [
bytes,
bytearray,
lambda b: CustomStr(b.decode()),
CustomBytes,
CustomByteArray,
memoryview,
]
try:
# stdlib
from array import array
except ImportError:
pass
else:
factories.append(lambda b: array("B", b))
for f in factories:
x = f(b" 3.14 ")
assert Float(x) == 3.14
with pytest.raises(ValueError):
Float(f(b"A" * 0x10))
def test_send(client: sy.VirtualMachineClient) -> None:
syft_float = Float(5)
ptr = syft_float.send(client)
# Check pointer type
assert ptr.__class__.__name__ == "FloatPointer"
# Check that we can get back the object
res = ptr.get()
assert res == syft_float
def test_send() -> None:
alice = sy.VirtualMachine(name="alice")
alice_client = alice.get_client()
syft_float = Float(5)
ptr = syft_float.send(alice_client)
# Check pointer type
assert ptr.__class__.__name__ == "FloatPointer"
# Check that we can get back the object
res = ptr.get()
assert res == syft_float
def test_serde() -> None:
syft_float = Float(5)
serialized = syft_float._object2proto()
assert isinstance(serialized, Float_PB)
deserialized = Float._proto2object(proto=serialized)
assert isinstance(deserialized, Float)
assert deserialized.id == syft_float.id
assert deserialized == syft_float
def test_api_float(op, py_obj):
sy_float = Float(42.5)
py_float = 42.5
try:
func_py = getattr(py_float, op)
except Exception:
return
func_sy = getattr(sy_float, op)
pypy_err, sypy_err = None, None
pypy, sypy = None, None
try:
pypy = func_py(py_obj)
except Exception as e_pypy:
pypy_err = str(e_pypy)
try:
sypy = func_sy(py_obj)
except Exception as e_sysy:
sypy_err = str(e_sysy)
if any([pypy_err, sypy_err]):
assert pypy_err == sypy_err
else:
assert pypy == sypy
def test_api_sanity_check():
sy_int = Float(42.5)
py_int = 42.5
sy_int_API = set(dir(sy_int))
py_int_API = set(dir(py_int))
print(sy_int_API - py_int_API)
assert len(py_int_API - sy_int_API) == 0
def test_floatasratio() -> None:
for f, ratio in [
(0.875, (7, 8)),
(-0.875, (-7, 8)),
(0.0, (0, 1)),
(11.5, (23, 2)),
]:
assert f.as_integer_ratio() == ratio
for i in range(10000):
f = random.random()
f *= 10**random.randint(-100, 100)
n, d = f.as_integer_ratio()
assert Float(n).__truediv__(d) == f
with pytest.raises(OverflowError):
Float("inf").as_integer_ratio()
with pytest.raises(OverflowError):
Float("-inf").as_integer_ratio()
with pytest.raises(ValueError):
Float("nan").as_integer_ratio()
def test_short_repr() -> None:
# test short Float repr introduced in Python 3.1. One aspect
# of this repr is that we get some degree of str -> Float ->
# str roundtripping. In particular, for any numeric string
# containing 15 or fewer significant digits, those exact same
# digits (modulo trailing zeros) should appear in the output.
# No more repr(0.03) -> "0.029999999999999999"!
test_strings = [
# output always includes *either* a decimal point and at
# least one digit after that point, or an exponent.
"0.0",
"1.0",
"0.01",
"0.02",
"0.03",
"0.04",
"0.05",
"1.23456789",
"10.0",
"100.0",
# values >= 1e16 get an exponent...
"1000000000000000.0",
"9999999999999990.0",
"1e+16",
"1e+17",
# ... and so do values < 1e-4
"0.001",
"0.001001",
"0.00010000000000001",
"0.0001",
"9.999999999999e-05",
"1e-05",
# values designed to provoke failure if the FPU rounding
# precision isn't set correctly
"8.72293771110361e+25",
"7.47005307342313e+26",
"2.86438000439698e+28",
"8.89142905246179e+28",
"3.08578087079232e+35",
]
for s in test_strings:
negs = "-" + s
assert s == repr(Float(s))
assert negs == repr(Float(negs))
# Since Python 3.2, repr and str are identical
assert repr(Float(s)) == str(Float(s))
assert repr(Float(negs)) == str(Float(negs))
def test_is_integer() -> None:
assert not Float(1.1).is_integer()
assert Float(1.0).is_integer()
assert not Float("nan").is_integer()
assert not Float("inf").is_integer()
def test_keyword_args() -> None:
with pytest.raises(TypeError):
Float(x="3.14")
def __float__(self):
return Float(str(self)) + 1
def __new__(cls, value=0.0):
return Float.__new__(cls, 2 * value)
def test_Floatconversion() -> None:
# Make sure that calls to __float__() work properly
class Foo1(object):
def __float__(self):
return 42.0
class Foo2(Float):
def __float__(self):
return 42.0
class Foo3(Float):
def __new__(cls, value=0.0):
return Float.__new__(cls, 2 * value)
def __float__(self):
return self
class Foo4(Float):
def __float__(self):
return 42
# Issue 5759: __Float__ not called on str subclasses (though it is on
# unicode subclasses).
class FooStr(str):
def __float__(self):
return Float(str(self)) + 1
assert Float(Foo1()) == 42.0
assert Float(Foo2()) == 42.0
with pytest.raises(TypeError):
Float(Foo4(42))
assert Float(FooStr("8")) == 9.0
class Foo5:
def __Float__(self):
return ""
with pytest.raises(TypeError):
time.sleep(Foo5())
# using __index__ in init was added in python 3.8
# https://github.com/python/cpython/commit/bdbad71b9def0b86433de12cecca022eee91bd9f
if sys.version_info >= (3, 8):
class MyIndex:
def __init__(self, value):
self.value = value
def __index__(self):
return self.value
assert Float(MyIndex(42)) == 42.0
with pytest.raises(OverflowError):
Float(MyIndex(2**2000))
class MyInt:
def __int__(self):
return 42
with pytest.raises(TypeError):
Float(MyInt())
def test_nan_signs():
# When using the dtoa.c code, the sign of Float('nan') should
# be predictable.
assert copysign(1.0, Float("nan")) == 1.0
assert copysign(1.0, Float("-nan")) == -1.0
def test_Float_pow() -> None:
# test builtin pow and ** operator for IEEE 754 special cases.
# Special cases taken from section F.Float(9.4).4 of the C99 specification
for pow_op in pow, operator.pow:
# x**NAN is NAN for any x except 1
assert isnan(pow_op(-INF, NAN))
assert isnan(pow_op(Float(Float(-2.0)), NAN))
assert isnan(pow_op(Float(-1.0), NAN))
assert isnan(pow_op(Float(-0.5), NAN))
assert isnan(pow_op(Float(0.5), NAN))
assert isnan(pow_op(Float(2.0), NAN))
assert isnan(pow_op(INF, NAN))
assert isnan(pow_op(NAN, NAN))
# NAN**y is NAN for any y except +-0
assert isnan(pow_op(NAN, -INF))
assert isnan(pow_op(NAN, Float(-2.0)))
assert isnan(pow_op(NAN, Float(-1.0)))
assert isnan(pow_op(NAN, Float(-0.5)))
assert isnan(pow_op(NAN, Float(0.5)))
assert isnan(pow_op(NAN, Float(1.0)))
assert isnan(pow_op(NAN, Float(2.0)))
assert isnan(pow_op(NAN, INF))
# (+-0)**y raises ZeroDivisionError for y a negative odd integer
with pytest.raises(ZeroDivisionError):
pow_op(Float(-0.0), Float(-1.0))
with pytest.raises(ZeroDivisionError):
pow_op(Float(0.0), Float(-1.0))
# (+-0)**y raises ZeroDivisionError for y finite and negative
# but not an odd integer
with pytest.raises(ZeroDivisionError):
pow_op(Float(-0.0), Float(-2.0))
with pytest.raises(ZeroDivisionError):
pow_op(Float(-0.0), Float(-0.5))
with pytest.raises(ZeroDivisionError):
pow_op(Float(0.0), Float(-2.0))
with pytest.raises(ZeroDivisionError):
pow_op(Float(0.0), Float(-0.5))
# (+-0)**y is +-0 for y a positive odd integer
assert pow_op(Float(-0.0), Float(1.0)) == -0.0
assert pow_op(Float(0.0), Float(1.0)) == 0.0
# (+-0)**y is 0 for y finite and positive but not an odd integer
assert pow_op(Float(-0.0), Float(0.5)) == 0.0
assert pow_op(Float(-0.0), Float(2.0)) == 0.0
assert pow_op(Float(0.0), Float(0.5)) == 0.0
assert pow_op(Float(0.0), Float(2.0)) == 0.0
# (-1)**+-inf is 1
assert pow_op(Float(-1.0), -INF) == 1.0
# 1**y is 1 for any y, even if y is an infinity or nan
assert pow_op(Float(1.0), -INF) == 1.0
assert pow_op(Float(1.0), Float(-2.0)) == 1.0
assert pow_op(Float(1.0), Float(-1.0)) == 1.0
assert pow_op(Float(1.0), Float(-0.5)) == 1.0
assert pow_op(Float(1.0), Float(-0.0)) == 1.0
assert pow_op(Float(1.0), Float(0.0)) == 1.0
assert pow_op(Float(1.0), Float(0.5)) == 1.0
assert pow_op(Float(1.0), Float(1.0)) == 1.0
assert pow_op(Float(1.0), Float(2.0)) == 1.0
assert pow_op(Float(1.0), INF) == 1.0
assert pow_op(Float(1.0), NAN) == 1.0
# x**+-0 is 1 for any x, even if x is a zero, infinity, or nan
assert pow_op(-INF, Float(0.0)) == 1.0
assert pow_op(Float(-2.0), Float(0.0)) == 1.0
assert pow_op(Float(-1.0), Float(0.0)) == 1.0
assert pow_op(Float(-0.5), Float(0.0)) == 1.0
assert pow_op(Float(-0.0), Float(0.0)) == 1.0
assert pow_op(Float(0.0), Float(0.0)) == 1.0
assert pow_op(Float(0.5), Float(0.0)) == 1.0
assert pow_op(Float(1.0), Float(0.0)) == 1.0
assert pow_op(Float(2.0), Float(0.0)) == 1.0
assert pow_op(INF, Float(0.0)) == 1.0
assert pow_op(NAN, Float(0.0)) == 1.0
assert pow_op(-INF, Float(-0.0)) == 1.0
assert pow_op(Float(-2.0), Float(-0.0)) == 1.0
assert pow_op(Float(-1.0), Float(-0.0)) == 1.0
assert pow_op(Float(-0.5), Float(-0.0)) == 1.0
assert pow_op(Float(-0.0), Float(-0.0)) == 1.0
assert pow_op(Float(0.0), Float(-0.0)) == 1.0
assert pow_op(Float(0.5), Float(-0.0)) == 1.0
assert pow_op(Float(1.0), Float(-0.0)) == 1.0
assert pow_op(Float(2.0), Float(-0.0)) == 1.0
assert pow_op(INF, Float(-0.0)) == 1.0
assert pow_op(NAN, Float(-0.0)) == 1.0
# x**y defers to complex pow for finite negative x and
# non-integral y.
assert isinstance(pow_op(Float(-2.0), Float(-0.5)), complex)
assert isinstance(pow_op(Float(-2.0), Float(0.5)), complex)
assert isinstance(pow_op(Float(-1.0), Float(-0.5)), complex)
assert isinstance(pow_op(-1.0, Float(0.5)), complex)
assert isinstance(pow_op(Float(-0.5), Float(-0.5)), complex)
assert isinstance(pow_op(Float(-0.5), Float(0.5)), complex)
# x**-INF is INF for abs(x) < 1
assert pow_op(Float(-0.5), -INF) == INF
assert pow_op(Float(-0.0), -INF) == INF
assert pow_op(Float(0.0), -INF) == INF
assert pow_op(Float(0.5), -INF) == INF
# x**-INF is 0 for abs(x) > 1
assert pow_op(-INF, -INF) == 0.0
assert pow_op(Float(-2.0), -INF) == 0.0
assert pow_op(Float(2.0), -INF) == 0.0
assert pow_op(INF, -INF) == 0.0
# x**INF is 0 for abs(x) < 1
assert pow_op(Float(-0.5), INF) == 0.0
assert pow_op(Float(-0.0), INF) == 0.0
assert pow_op(Float(0.0), INF) == 0.0
assert pow_op(Float(0.5), INF) == 0.0
# x**INF is INF for abs(x) > 1
assert pow_op(-INF, INF) == INF
assert pow_op(Float(-2.0), INF) == INF
assert pow_op(Float(2.0), INF) == INF
assert pow_op(INF, INF) == INF
# (-INF)**y is -0.0 for y a negative odd integer
assert pow_op(-INF, Float(-1.0)) == -0.0
# (-INF)**y is 0.0 for y negative but not an odd integer
assert pow_op(-INF, Float(-0.5)) == 0.0
assert pow_op(-INF, Float(-2.0)) == 0.0
# (-INF)**y is -INF for y a positive odd integer
assert pow_op(-INF, Float(1.0)) == -INF
# (-INF)**y is INF for y positive but not an odd integer
assert pow_op(-INF, Float(0.5)) == INF
assert pow_op(-INF, Float(2.0)) == INF
# INF**y is INF for y positive
assert pow_op(INF, Float(0.5)) == INF
assert pow_op(INF, Float(1.0)) == INF
assert pow_op(INF, Float(2.0)) == INF
# INF**y is 0.0 for y negative
assert pow_op(INF, Float(-2.0)) == 0.0
assert pow_op(INF, Float(-1.0)) == 0.0
assert pow_op(INF, Float(-0.5)) == 0.0
# basic checks not covered by the special cases above
assert pow_op(Float(-2.0), Float(-2.0)) == 0.25
assert pow_op(Float(-2.0), Float(-1.0)) == Float(-0.5)
assert pow_op(Float(-2.0), Float(-0.0)) == Float(1.0)
assert pow_op(Float(-2.0), Float(0.0)) == Float(1.0)
assert pow_op(Float(-2.0), Float(1.0)) == Float(-2.0)
assert pow_op(Float(-2.0), Float(2.0)) == Float(4.0)
assert pow_op(Float(-1.0), Float(-2.0)) == Float(1.0)
assert pow_op(Float(-1.0), Float(-1.0)) == Float(-1.0)
assert pow_op(Float(-1.0), Float(-0.0)) == Float(1.0)
assert pow_op(Float(-1.0), Float(0.0)) == Float(1.0)
assert pow_op(Float(-1.0), Float(1.0)) == Float(-1.0)
assert pow_op(Float(-1.0), Float(2.0)) == Float(1.0)
assert pow_op(Float(2.0), Float(-2.0)) == Float(0.25)
assert pow_op(Float(2.0), Float(-1.0)) == Float(0.5)
assert pow_op(Float(2.0), Float(-0.0)) == Float(1.0)
assert pow_op(Float(2.0), Float(0.0)) == Float(1.0)
assert pow_op(Float(2.0), Float(1.0)) == Float(2.0)
assert pow_op(Float(2.0), Float(2.0)) == Float(4.0)
# 1 ** large and -1 ** large; some libms apparently
# have problems with these
assert pow_op(Float(1.0), -1e100) == Float(1.0)
assert pow_op(Float(1.0), 1e100) == Float(1.0)
assert pow_op(Float(-1.0), -1e100) == Float(1.0)
assert pow_op(Float(-1.0), 1e100) == Float(1.0)
# check sign for results that underflow to 0
assert pow_op(Float(-2.0), Float(-2000.0)) == Float(0.0)
assert isinstance(pow_op(Float(-2.0), Float(-2000.5)), complex)
assert pow_op(Float(-2.0), Float(-2001.0)) == Float(-0.0)
assert pow_op(Float(2.0), Float(-2000.0)) == Float(0.0)
assert pow_op(Float(2.0), Float(-2000.5)) == Float(0.0)
assert pow_op(Float(2.0), Float(-2001.0)) == Float(0.0)
assert pow_op(Float(-0.5), Float(2000.0)) == Float(0.0)
assert isinstance(pow_op(Float(-0.5), Float(2000.5)), complex)
assert pow_op(Float(-0.5), Float(2001.0)) == Float(-0.0)
assert pow_op(Float(0.5), Float(2000.0)) == Float(0.0)
assert pow_op(Float(0.5), Float(2000.5)) == Float(0.0)
assert pow_op(Float(0.5), Float(2001.0)) == Float(0.0)
def test_inf_from_str() -> None:
assert isinf(Float("inf"))
assert isinf(Float("+inf"))
assert isinf(Float("-inf"))
assert isinf(Float("infinity"))
assert isinf(Float("+infinity"))
assert isinf(Float("-infinity"))
assert repr(Float("inf")) == "inf"
assert repr(Float("+inf")) == "inf"
assert repr(Float("-inf")) == "-inf"
assert repr(Float("infinity")) == "inf"
assert repr(Float("+infinity")) == "inf"
assert repr(Float("-infinity")) == "-inf"
assert repr(Float("INF")) == "inf"
assert repr(Float("+Inf")) == "inf"
assert repr(Float("-iNF")) == "-inf"
assert repr(Float("Infinity")) == "inf"
assert repr(Float("+iNfInItY")) == "inf"
assert repr(Float("-INFINITY")) == "-inf"
assert str(Float("inf")) == "inf"
assert str(Float("+inf")) == "inf"
assert str(Float("-inf")) == "-inf"
assert str(Float("infinity")) == "inf"
assert str(Float("+infinity")) == "inf"
assert str(Float("-infinity")) == "-inf"
with pytest.raises(ValueError):
Float("info")
with pytest.raises(ValueError):
Float("+info")
with pytest.raises(ValueError):
Float("-info")
with pytest.raises(ValueError):
Float("in")
with pytest.raises(ValueError):
Float("+in")
with pytest.raises(ValueError):
Float("-in")
with pytest.raises(ValueError):
Float("infinit")
with pytest.raises(ValueError):
Float("+Infin")
with pytest.raises(ValueError):
Float("-INFI")
with pytest.raises(ValueError):
Float("infinitys")
with pytest.raises(ValueError):
Float("++Inf")
with pytest.raises(ValueError):
Float("-+inf")
with pytest.raises(ValueError):
Float("+-infinity")
with pytest.raises(ValueError):
Float("--Infinity")
def test_previous_round_bugs() -> None:
# particular cases that have occurred in bug reports
assert round(Float(25.0), -1) == Float(20.0)
assert round(Float(35.0), -1) == Float(40.0)
assert round(Float(45.0), -1) == Float(40.0)
assert round(Float(55.0), -1) == Float(60.0)
assert round(Float(65.0), -1) == Float(60.0)
assert round(Float(75.0), -1) == Float(80.0)
assert round(Float(85.0), -1) == Float(80.0)
assert round(Float(95.0), -1) == Float(100.0)
def test_float() -> None:
assert Float(3.14) == 3.14
assert Float(314) == 314.0
assert Float(" 3.14 ") == 3.14
with pytest.raises(ValueError):
Float(" 0x3.1 ")
with pytest.raises(ValueError):
Float(" -0x3.p-1 ")
with pytest.raises(ValueError):
Float(" +0x3.p-1 ")
with pytest.raises(ValueError):
Float("++3.14")
with pytest.raises(ValueError):
Float("+-3.14")
with pytest.raises(ValueError):
Float("-+3.14")
with pytest.raises(ValueError):
Float("--3.14")
with pytest.raises(ValueError):
Float(".nan")
with pytest.raises(ValueError):
Float("+.inf")
with pytest.raises(ValueError):
Float(".")
with pytest.raises(ValueError):
Float("-.")
with pytest.raises(TypeError):
Float({})
with pytest.raises(TypeError):
Float({})
# Lone surrogate
with pytest.raises(ValueError):
Float("\uD8F0")
# check that we don't accept alternate exponent markers
with pytest.raises(ValueError):
Float("-1.7d29")
with pytest.raises(ValueError):
Float("3D-14")
assert Float(" \u0663.\u0661\u0664 ") == 3.14
assert Float("\N{EM SPACE}3.14\N{EN SPACE}") == 3.14
# extra long strings should not be a problem
Float(b"." + b"1" * 1000)
Float("." + "1" * 1000)
with pytest.raises(ValueError):
Float("\u3053\u3093\u306b\u3061\u306f")
"1.4_j",
"1.4e5_j",
# Underscore right before e:
"1_e1",
"1.4_e1",
"1.4_e1j",
# Underscore right after e:
"1e_1",
"1.4e_1",
"1.4e_1j",
# Complex cases with parens:
"(1+1.5_j_)",
"(1+1.5_j)",
]
INF = Float("inf")
NAN = Float("nan")
have_getformat = hasattr(Float, "__getformat__")
class FloatSubclass(Float):
pass
class OtherFloatSubclass(Float):
pass
class F:
def __float__(self):
def test_inf_signs():
assert copysign(1.0, Float("inf")) == 1.0
assert copysign(1.0, Float("-inf")) == -1.0
def test_protobuf():
assert Float.get_protobuf_schema()
assert FloatWrapper.get_wrapped_type() is Float
def test_Float_mod() -> None:
# Check behaviour of % operator for IEEE 754 special cases.
# In particular, check signs of zeros.
mod = operator.mod
assert mod(Float(-1.0), Float(1.0)) == 0.0
assert mod(Float(-1e-100), Float(1.0)) == 1.0
assert mod(Float(-0.0), Float(1.0)) == 0.0
assert mod(Float(0.0), Float(1.0)) == 0.0
assert mod(Float(1e-100), Float(1.0)) == 1e-100
assert mod(Float(1.0), Float(1.0)) == 0.0
assert mod(Float(-1.0), Float(-1.0)) == -0.0
assert mod(Float(-1e-100), Float(-1.0)) == -1e-100
assert mod(Float(-0.0), Float(-1.0)) == -0.0
assert mod(Float(0.0), Float(-1.0)) == -0.0
assert mod(Float(1e-100), Float(-1.0)) == -1.0
assert mod(Float(1.0), Float(-1.0)) == -0.0
def test_previous_round_bugs():
# particular cases that have occurred in bug reports
assert round(562949953421312.5, 1) == 562949953421312.5
assert round(56294995342131.5, 3) == 56294995342131.5
# round-half-even
assert round(Float(25.0), -1) == Float(20.0)
assert round(Float(35.0), -1) == Float(40.0)
assert round(Float(45.0), -1) == Float(40.0)
assert round(Float(55.0), -1) == Float(60.0)
assert round(Float(65.0), -1) == Float(60.0)
assert round(Float(75.0), -1) == Float(80.0)
assert round(Float(85.0), -1) == Float(80.0)
assert round(Float(95.0), -1) == Float(100.0)
def test_Float_with_comma() -> None:
# set locale to something that doesn't use '.' for the decimal point
# Float must not accept the locale specific decimal point but
# it still has to accept the normal python syntax
assert Float(" 3.14 ") == 3.14
assert Float("+3.14 ") == 3.14
assert Float("-3.14 ") == -3.14
assert Float(".14 ") == 0.14
assert Float("3. ") == 3.0
assert Float("3.e3 ") == 3000.0
assert Float("3.2e3 ") == 3200.0
assert Float("2.5e-1 ") == 0.25
assert Float("5e-1") == 0.5
with pytest.raises(ValueError):
Float(" 3,14 ")
with pytest.raises(ValueError):
Float(" +3,14 ")
with pytest.raises(ValueError):
Float(" -3,14 ")
with pytest.raises(ValueError):
Float(" 0x3.1 ")
with pytest.raises(ValueError):
Float(" -0x3.p-1 ")
with pytest.raises(ValueError):
Float(" +0x3.p-1 ")
assert Float(" 25.e-1 ") == 2.5
def test_float() -> None:
assert SyFalse.__float__() == Float(0.0)
assert SyFalse.__float__() == SyFalse
assert SyTrue.__float__() == Float(1.0)
assert SyTrue.__float__() == SyTrue
def test_matches_Float_format() -> None:
# round should give the same results as Float formatting
for i in range(500):
x = i / 1000.0
assert Float(format(x, ".0f")) == round(x, 0)
assert Float(format(x, ".1f")) == round(x, 1)
assert Float(format(x, ".2f")) == round(x, 2)
for i in range(5, 5000, 10):
x = i / 1000.0
assert Float(format(x, ".0f")) == round(x, 0)
assert Float(format(x, ".1f")) == round(x, 1)
assert Float(format(x, ".2f")) == round(x, 2)
assert Float(format(x, ".3f")) == round(x, 3)
for i in range(500):
x = random.random()
assert Float(format(x, ".0f")) == round(x, 0)
assert Float(format(x, ".1f")) == round(x, 1)
assert Float(format(x, ".2f")) == round(x, 2)
assert Float(format(x, ".3f")) == round(x, 3)
def test_Float_memoryview() -> None:
assert Float(memoryview(b"12.3")[1:4]) == 2.3
assert Float(memoryview(b"12.3\x00")[1:4]) == 2.3
assert Float(memoryview(b"12.3 ")[1:4]) == 2.3
assert Float(memoryview(b"12.3A")[1:4]) == 2.3
assert Float(memoryview(b"12.34")[1:4]) == 2.3
def test_nan_from_str() -> None:
assert isnan(Float("nan"))
assert isnan(Float("+nan"))
assert isnan(Float("-nan"))
assert repr(Float("nan")) == "nan"
assert repr(Float("+nan")) == "nan"
assert repr(Float("-nan")) == "nan"
assert repr(Float("NAN")) == "nan"
assert repr(Float("+NAn")) == "nan"
assert repr(Float("-NaN")) == "nan"
assert str(Float("nan")) == "nan"
assert str(Float("+nan")) == "nan"
assert str(Float("-nan")) == "nan"
with pytest.raises(ValueError):
Float("nana")
with pytest.raises(ValueError):
Float("+nana")
with pytest.raises(ValueError):
Float("-nana")
with pytest.raises(ValueError):
Float("na")
with pytest.raises(ValueError):
Float("+na")
with pytest.raises(ValueError):
Float("-na")
with pytest.raises(ValueError):
Float("++nan")
with pytest.raises(ValueError):
Float("-+NAN")
with pytest.raises(ValueError):
Float("+-NaN")
with pytest.raises(ValueError):
Float("--nAn")
def check(s):
with pytest.raises(ValueError):
Float(s)