def test_nested_bytes_when_class_is_float(self, obj):
float_obj = Float(bytes(obj))
# NaN has several different binary representations.
assume(not math.isnan(float_obj.value))
bytes1 = bytes(obj)
bytes2 = bytes(float_obj)
self.assertEqual(bytes1, bytes2)
def test_negative_bits_raises_ValueError_for_float_from_int(
self, x_and_bits, negative_bits):
x, _ = x_and_bits
assume(not math.isnan(x) and not math.isinf(x))
i = int(x)
with self.assertRaises(ValueError):
Float(i, negative_bits)
def test_invalid_bits_raises_ValueError_for_float_from_int(
self, x_and_bits):
x, bits = x_and_bits
# x must be a numerical value so that it can be converted to int.
assume(not math.isnan(x) and not math.isinf(x))
i = int(x)
with self.assertRaises(ValueError):
Float(i, bits)
def test_float_from_int_sets_attributes_correctly(self, x_and_bits):
x, bits = x_and_bits
# x must be a numerical value so that it can be converted to int.
assume(not math.isnan(x) and not math.isinf(x))
i = int(x)
float_ = Float(i, bits)
self.assertEqual(float_.value, i)
self.assertEqual(float_.bits, 32)
def test_float_from_float_sets_attributes_correctly(self, x_and_bits):
x, bits = x_and_bits
float_ = Float(x, bits)
if math.isnan(x):
self.assertTrue(math.isnan(float_.value))
else:
self.assertEqual(float_.value, x)
self.assertEqual(float_.bits, 32)
def test_default_float(self):
parameter = dummy_parameter_from_line(
default='1.2e3', format_='real32')
self.assertEqual(parameter.default, Float(1.2e3))
def test_min_max_float(self):
parameter = dummy_parameter_from_line(
min_value='-1.23e-4', max_value='4.56e7', format_='real32')
self.assertEqual(parameter.min_value, Float(-1.23e-4))
self.assertEqual(parameter.max_value, Float(4.56e7))
def test_float_with_too_large_value_raises_ValueError(self):
with self.assertRaises(ValueError):
Float(1E50)
with self.assertRaises(ValueError):
Float(-1E50)
def test_bits_default_value(self):
self.assertEqual(Uint(1).bits, 8)
self.assertEqual(Sint(-1).bits, 8)
self.assertEqual(Float(1.0).bits, 32)
self.assertEqual(Float(1).bits, 32)
self.assertEqual(Bin(1).bits, 8)
def test_float_sets_small_value_to_0(self):
self.assertEqual(Float(1E-50).value, 0)
self.assertEqual(Float(-1E-50).value, 0)