def test_equal(self):
bool1 = Rational(3, 4) == Rational(3, 4)
bool2 = Rational(3, 4) != Rational(7, 4)
bool3 = Rational(3, 4) == Rational(7, 4)
bool4 = Rational(3, 4) != Rational(3, 4)
self.assertEqual(bool1, True, "Error in equal")
self.assertEqual(bool2, True, "Error in equal")
self.assertEqual(bool3, False, "Error in equal")
self.assertEqual(bool4, False, "Error in equal")
def test_BR4(self):
x = Rational(-3, 4)
y = Rational(3, -4)
self.assertEqual(x, y, "Error in BR4")
def test_BR3(self):
x = Rational(3, 6)
y = Rational(1, 2)
self.assertEqual(x, y, "Error in B3")
def test_BR2(self):
x = Rational(2, 4)
self.assertEqual(x.__str__(), "1/2",
"Rational(2, 4) should output 1/2")
def test_BR1(self):
with self.assertRaises(ValueError):
Rational(5, 0)
def test_div_neg(self):
result = Rational(2, 3) / Rational(-5, 7)
self.assertEqual(result, Rational(-14, 15),
"Error in dividing Negative fractions")
def test_mult_neg(self):
result = Rational(2, 5) * Rational(-2, 5)
self.assertEqual(result, Rational(-4, 25),
"Error in multiplying Negative fractions")
def test_div_pos(self):
result = Rational(2, 3) / Rational(5, 7)
self.assertEqual(result, Rational(14, 15),
"Error in dividing Positive fractions")
def test_sub_neg(self):
result = Rational(2, 5) - Rational(-2, 5)
self.assertEqual(result, Rational(4, 5),
"Error in Substracting Negative Fractions")
def test_mult_pos(self):
result = Rational(2, 5) * Rational(2, 5)
self.assertEqual(result, Rational(4, 25),
"Error multiplying Positive fractions")
def test_sub_pos(self):
result = Rational(4, 5) - Rational(2, 5)
self.assertEqual(result, Rational(2, 5),
"Error in Substracting Positive Fractions")
def test_add_neg(self):
result = Rational(4, 5) - Rational(3, 5)
self.assertEqual(result, Rational(1, 5),
"Error in Adding Negative Fractions")
def test_add_pos(self):
result = Rational(2, 5) + Rational(2, 5)
self.assertEqual(result, Rational(4, 5),
"Error in Adding Positive Fractions")
# Driver for class Rational.
from RationalNumber import Rational
# create objects of class Rational
rational1 = Rational() # 1/1
rational2 = Rational(10, 30) # 10/30 (reduces to 1/3)
rational3 = Rational(-7, 14) # -7/14 (reduces to -1/2)
# print objects of class Rational
print("rational1:", rational1)
print("rational2:", rational2)
print("rational3:", rational3)
print()
# test mathematical operators
print(rational1, "/", rational2, "=", rational1 / rational2)
print(rational3, "-", rational2, "=", rational3 - rational2)
print(rational2, "*", rational3, "-", rational1, "=", \
rational2 * rational3 - rational1)
# overloading + implicitly overloads +=
rational1 += rational2 * rational3
print("\nrational1 after adding rational2 * rational3:", rational1)
print()
# test comparison operators
print(rational1, "<=", rational2, ":", rational1 <= rational2)
print(rational1, ">", rational3, ":", rational1 > rational3)
print()
# Fig. 8.10: relationalNumber_example.py # Driver for class Rational. from RationalNumber import Rational # create objects of class Rational rational1 = Rational() # 1/1 rational2 = Rational(10, 30) # 10/30 (reduces to 1/3) rational3 = Rational(-7, 14) # -7/14 (reduces to -1/2) # print objects of class Rational print "rational1:", rational1 print "rational2:", rational2 print "rational3:", rational3 print # test mathematical operators print rational1, "/", rational2, "=", rational1 / rational2 print rational3, "-", rational2, "=", rational3 - rational2 print rational2, "*", rational3, "-", rational1, "=", \ rational2 * rational3 - rational1 # overloading + implicitly overloads += rational1 += rational2 * rational3 print "\nrational1 after adding rational2 * rational3:", rational1 print # test comparison operators print rational1, "<=", rational2, ":", rational1 <= rational2 print rational1, ">", rational3, ":", rational1 > rational3 print