def test_simplest_form(self): fq1 = FractionWithConstant() fq1.const = -2 fq1.num = 3 fq1.denom = 2 fq1.save() fq2 = fq1.simplest_form() self.assertEquals(fq2.const, -3) self.assertEquals(fq2.num, 1) self.assertEquals(fq2.denom, 2)
def test_basic_creation(self): fq = FractionWithConstant() fq.const = 1 fq.num = 2 fq.denom = 3 fq.save() fqs = FractionWithConstant.objects.all() fq = fqs[0] self.assertEquals(fq.const,1) self.assertEquals(fq.num,2) self.assertEquals(fq.denom,3) desc = fq.describe() self.assertEquals(desc,'1 2/3')
def test_zero_division_error(self): fq1 = FractionWithConstant() fq1.const = 1 fq1.num = 4 fq1.denom = 2 fq1.save() fq2 = FractionWithConstant() fq2.const = 2 fq2.num = 0 fq2.denom = 0 fq2.save() tst = fq1 == fq2 self.assertEquals(tst,'ZeroDivisionError')
def test_two_fractions_not_equal(self): fq1 = FractionWithConstant() fq1.const = 1 fq1.num = 4 fq1.denom = 2 fq1.save() fq2 = FractionWithConstant() fq2.const = 2 fq2.num = 1 fq2.denom = 2 fq2.save() tst = fq1 == fq2 self.assertEquals(tst,False)
def createFraction(i,oper):
if oper.oper_name == "+":
fs = ((3,1,2),(5,1,3)),((0,4,7),(0,2,5)),((3,2,3),(2,5,7)),((-3,3,4),(0,1,2))
f_ans = (8,5,6),(0,34,35),(6,8,21),(-3,1,4)
if oper.oper_name == "*":
fs = ((0,-1,3),(0,9,16)),((1,1,2),(2,1,5)),((-1,5,9),(-2,1,7)),((-2,3,5),(1,1,4))
f_ans = (0,-3,16),(3,3,10),(3,1,3),(-3,1,4)
if oper.oper_name == "/":
fs = ((0,1,2),(0,1,6)),((0,1,2),(3,0,1)),((2,1,2),(1,1,10)),((0,-3,4),(0,1,4))
f_ans = (3,0,1),(0,1,6),(2,3,11),(-3,0,0)
if oper.oper_name == "-":
fs = ((0,3,4),(0,1,4)),((15,3,4),(8,5,6)),((4,3,5),(1,9,10)),((0,1,2),(0,1,2))
f_ans = (0,1,2),(6,11,12),(2,7,10),(0,1,0)
q1 = FractionWithConstant()
q1.const = fs[i][0][0]
q1.num = fs[i][0][1]
q1.denom = fs[i][0][2]
q2 = FractionWithConstant()
q2.const = fs[i][1][0]
q2.num = fs[i][1][1]
q2.denom = fs[i][1][2]
ans = FractionWithConstant()
ans.const = f_ans[i][0]
ans.num = f_ans[i][1]
ans.denom = f_ans[i][2]
return[q1,q2,ans]