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import unittest
from fontTools.misc.fixedTools import otRound
from fontMath.mathFunctions import (
add, addPt, sub, subPt, mul, mulPt, div, divPt, factorAngle, _roundNumber,
setRoundIntegerFunction, setRoundFloatFunction,
_ROUND_INTEGER_FUNC, _ROUND_FLOAT_FUNC, round2
)
class MathFunctionsTest(unittest.TestCase):
def __init__(self, methodName):
unittest.TestCase.__init__(self, methodName)
def test_add(self):
self.assertEqual(add(1, 2), 3)
self.assertEqual(add(3, -4), -1)
self.assertEqual(add(5, 0), 5)
self.assertEqual(add(6, 7), add(7, 6))
def test_addPt(self):
self.assertEqual(addPt((20, 230), (50, 40)), (70, 270))
def test_sub(self):
self.assertEqual(sub(10, 10), 0)
self.assertEqual(sub(10, -10), 20)
self.assertEqual(sub(-10, 10), -20)
def test_subPt(self):
self.assertEqual(subPt((20, 230), (50, 40)), (-30, 190))
def test_mul(self):
self.assertEqual(mul(1, 2), 2)
self.assertEqual(mul(3, -4), -12)
self.assertEqual(mul(10, 0), 0)
self.assertEqual(mul(5, 6), mul(6, 5))
def test_mulPt(self):
self.assertEqual(mulPt((15, 25), (2, 3)), (30, 75))
def test_div(self):
self.assertEqual(div(1, 2), 0.5)
with self.assertRaises(ZeroDivisionError):
div(10, 0)
self.assertEqual(div(12, -4), -3)
def test_divPt(self):
self.assertEqual(divPt((15, 75), (2, 3)), (7.5, 25.0))
def test_factorAngle(self):
f = factorAngle(5, (2, 1.5), mul)
self.assertEqual(_roundNumber(f, 2), 3.75)
def test_roundNumber(self):
# round to integer:
self.assertEqual(_roundNumber(0), 0)
self.assertEqual(_roundNumber(0.1), 0)
self.assertEqual(_roundNumber(0.99), 1)
self.assertEqual(_roundNumber(0.499), 0)
self.assertEqual(_roundNumber(0.5), 0)
self.assertEqual(_roundNumber(-0.499), 0)
self.assertEqual(_roundNumber(-0.5), 0)
self.assertEqual(_roundNumber(1.5), 2)
self.assertEqual(_roundNumber(-1.5), -2)
def test_roundNumber_to_float(self):
# round to float with specified decimals:
self.assertEqual(_roundNumber(0.3333, None), 0)
self.assertEqual(_roundNumber(0.3333, 0), 0.0)
self.assertEqual(_roundNumber(0.3333, 1), 0.3)
self.assertEqual(_roundNumber(0.3333, 2), 0.33)
self.assertEqual(_roundNumber(0.3333, 3), 0.333)
def test_set_custom_round_integer_func(self):
default = _ROUND_INTEGER_FUNC
try:
setRoundIntegerFunction(otRound)
self.assertEqual(_roundNumber(0.5), 1)
self.assertEqual(_roundNumber(-1.5), -1)
finally:
setRoundIntegerFunction(default)
def test_set_custom_round_float_func(self):
default = _ROUND_FLOAT_FUNC
try:
setRoundFloatFunction(round2)
self.assertEqual(_roundNumber(0.55, 1), 0.6)
self.assertEqual(_roundNumber(-1.555, 2), -1.55)
finally:
setRoundIntegerFunction(default)
if __name__ == "__main__":
unittest.main()
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