def test_valid_pack(self):
"""Test packing valid fixed point values."""
precision = 8
field = ('a', 'F', 'i', precision)
self.assertTrue(ElementFixedPoint.valid(field))
elem = ElementFixedPoint(field, Mode.Big)
test_values = [
({'a': '4'}, 4),
({'a': 13.5}, 13.5),
({'a': '13.5'}, '13.5'),
({'a': '13.500'}, '13.500'),
({'a': Decimal('13.500')}, '13.500'),
({'a': 1.1 + 2.2}, '3.3'),
]
multiplier = 2 ** precision
for (in_val, out_val) in test_values:
ret = elem.pack(in_val)
if not isinstance(out_val, Decimal):
out_val = Decimal(out_val)
self.assertEqual(ret, int((out_val * multiplier)).to_bytes(4, 'big'))
def test_valid(self):
"""Test field formats that are valid fixedpoint elements."""
test_fields = [
('a', 'F', 'i', 8),
('b', 'F', 'h', 4),
('c', 'F', 'h', 7),
]
for field in test_fields:
with self.subTest(field): # pylint: disable=no-member
out = ElementFixedPoint.valid(field)
self.assertTrue(out)
def test_valid(self):
"""Test field formats that are valid fixedpoint elements."""
test_fields = [
('a', 'F', 'i', 8),
('b', 'F', 'h', 4),
('c', 'F', 'h', 7),
]
for field in test_fields:
with self.subTest(field): # pylint: disable=no-member
out = ElementFixedPoint.valid(field)
self.assertTrue(out)
def test_not_valid(self):
"""Test field formats that are not valid fixedpoint elements."""
test_fields = [
('a', 'PF', 16, 8), # Must have numbers preceding the F
('b', '3D', 8, 8), # D is not a valid prefix. Must be F for fixedpoint
('c', 'D', 8.0, 8), # Must be int, not float
('d', 'D', 8, 16), # bytes must be larger than precision.
('e', 'D', 8), # Must be of length four
]
for field in test_fields:
with self.subTest(field): # pylint: disable=no-member
out = ElementFixedPoint.valid(field)
self.assertFalse(out)
