def test_str_2(self):
t1 = Term('y')
t2 = Term('-z')
eq = Equation('x', 'define x', (t2, t1))
self.assertEqual('-z+y', eq.GetRightHandSide())
def test_Addterm_3(self):
eq = Equation('x', 'define x')
eq.AddTerm('y')
self.assertEqual('y', eq.GetRightHandSide())
eq.AddTerm('w*z')
self.assertEqual('y+w*z', eq.GetRightHandSide())
def test_str_1(self):
t1 = Term('y')
t2 = Term('-z')
eq = Equation('x', 'define x', (t1, t2))
self.assertEqual('y-z', eq.GetRightHandSide())