def testEquality(self):
my_half = BitWeight(1, 2)
self.assertEqual(self.half, my_half)
self.assertEqual(self.half.real(), my_half.real())
my_quarter = BitWeight(1, 4)
self.assertEqual(self.quarter, my_quarter)
self.assertEqual(self.quarter.real(), my_quarter.real())
class TestBitWeight(unittest.TestCase):
def setUp(self):
self.tiny = BitWeight(1, 1e6)
self.half = BitWeight(.5)
self.quarter = BitWeight(.25)
self.eighth = BitWeight(.125)
self.century = BitWeight(100)
self.millenium = BitWeight(1000)
def testNegativeAssertions(self):
with self.assertRaises(BitWeightRangeError):
unused_v = BitWeight(-.5)
with self.assertRaises(BitWeightRangeError):
unused_v = BitWeight(-1, 2)
with self.assertRaises(BitWeightRangeError):
unused_v = BitWeight(1, -2)
with self.assertRaises(BitWeightRangeError):
unused_v = BitWeight(1, 0)
def testAddition(self):
three_quarters = .75
self.assertEqual((self.half + self.quarter).real(), .75)
self.assertEqual((self.quarter + self.half).real(), .75)
# test the code path for equal values
self.assertEqual((self.quarter + self.quarter).real(), 0.5)
def testMultiplication(self):
one_quarter = .125
self.assertEqual((self.half * self.quarter).real(), .125)
self.assertEqual((self.quarter * self.half).real(), .125)
def testDivision(self):
self.assertEqual((self.half / self.quarter).real(), 2.)
self.assertEqual((self.quarter / self.half).real(), .5)
def testEquality(self):
my_half = BitWeight(1, 2)
self.assertEqual(self.half, my_half)
self.assertEqual(self.half.real(), my_half.real())
my_quarter = BitWeight(1, 4)
self.assertEqual(self.quarter, my_quarter)
self.assertEqual(self.quarter.real(), my_quarter.real())
def testComparison(self):
bws = [self.quarter, self.half, self.eighth]
bws.sort()
self.assertEqual([bw.real() for bw in bws], [.125, .25, .5])