def testMultiplyNumber(self):
self.assertEqual(Fraction(2, 3), Fraction(1, 3) * 2)
self.assertEqual(Fraction(-2, 3), Fraction(1, 3) * (-2))
self.assertEqual(Fraction(2, 3), 2 * Fraction(1, 3))
self.assertEqual(Fraction(-2, 3), -2 * Fraction(1, 3))
fraction = Fraction(1, 3)
fraction *= 2
self.assertEqual(Fraction(2, 3), fraction)
def testStrVariable(self):
self.assertEqual(
str(VariableBuilder().name('x').value(Fraction(1, 2)).build()),
'+(1/2)*x')
self.assertEqual(
str(VariableBuilder().name('x').value(Fraction(-1, 2)).build()),
'-(1/2)*x')
self.assertEqual(
str(VariableBuilder().name('x').value(Fraction(1, 1)).build()),
'+x')
self.assertEqual(
str(VariableBuilder().name('x').value(Fraction(-1, 1)).build()),
'-x')
self.assertEqual(
str(VariableBuilder().name('x').value(Fraction(-4, 2)).build()),
'-2*x')
self.assertEqual(
str(VariableBuilder().name('x').value(Fraction(4, 2)).build()),
'+2*x')
self.assertEqual(
str(VariableBuilder().name('x').value(Fraction(0, 2)).build()),
'+0*x')
def testReprVariable(self):
self.assertEqual(
repr(VariableBuilder().name('x').value(Fraction(1, 2)).build()),
'Variable(\'x\', Fraction(1, 2))')
def value(self, value_arg):
if isinstance(value_arg, Fraction):
self._value = Fraction(value_arg._num, value_arg._den)
else:
self._value = Fraction(value_arg, 1)
return self
def __init__(self):
self._value = Fraction(1, 1)
def fraction(self, num, den):
self._value = Fraction(num, den)
return self
def __init__(self):
self._name = 'x'
self._value = Fraction(1, 1)
def testAddFractions(self):
self.assertEqual(Fraction(2, 3), Fraction(1, 3) + Fraction(1, 3))
self.assertEqual(Fraction(2, 3), Fraction(4, 3) - Fraction(2, 3))
fraction = Fraction(1, 3)
fraction += Fraction(1, 3)
self.assertEqual(Fraction(2, 3), fraction)
def testFractionRepr(self):
self.assertEqual(repr(Fraction(1, 2)), "Fraction(1, 2)")
self.assertEqual(repr(Fraction(-1, 2)), "Fraction(-1, 2)")
self.assertEqual(repr(Fraction(3, 3)), "Fraction(1, 1)")
self.assertEqual(repr(Fraction(6, 3)), "Fraction(2, 1)")
def testFractionStr(self):
self.assertEqual(str(Fraction(1, 2)), "1/2")
self.assertEqual(str(Fraction(-1, 2)), "-1/2")
self.assertEqual(str(Fraction(3, 3)), "1")
self.assertEqual(str(Fraction(6, 3)), "2")
def testDivideFraction(self):
self.assertEqual(Fraction(4, 9), Fraction(1, 3) / Fraction(3, 4))
fraction = Fraction(1, 3)
fraction /= Fraction(2, 3)
self.assertEqual(Fraction(1, 2), fraction)
def testDivideNumber(self):
self.assertEqual(Fraction(2, 3), Fraction(4, 3) / 2)
self.assertEqual(Fraction(3, 1), 2 / Fraction(2, 3))
fraction = Fraction(4, 3)
fraction /= 2
self.assertEqual(Fraction(2, 3), fraction)
def testMultiplyFractions(self):
self.assertEqual(Fraction(2, 9), Fraction(1, 3) * Fraction(2, 3))
fraction = Fraction(1, 3)
fraction *= Fraction(2, 3)
self.assertEqual(Fraction(2, 9), fraction)
def testAddFractionNumber(self):
self.assertEqual(Fraction(4, 3), Fraction(1, 3) + 1)
self.assertEqual(Fraction(4, 3), 1 + Fraction(1, 3))
self.assertEqual(Fraction(2, 3), 1 - Fraction(1, 3))
self.assertEqual(Fraction(1, 3), Fraction(4, 3) - 1)
fraction = Fraction(1, 3)
fraction += 1
self.assertEqual(Fraction(4, 3), fraction)
fraction -= 1
self.assertEqual(Fraction(1, 3), fraction)