def test__add__(self, a, b, c, d):
if len(set([a, b, c, d])) != 4:
return
self.assertIsInstance(Subtraction(a, b) + Subtraction(c, d), Addition)
self.assertIsInstance(Subtraction(a, b) + Symbol(c), Addition)
self.assertIsInstance(Symbol(a) + Subtraction(b, c), Addition)
def test__sub__(self, a, b, c, d):
if len(set([a, b, c, d])) != 4:
return
self.assertIsInstance(
Subtraction(a, b) - Subtraction(c, d), Subtraction)
self.assertIsInstance(Subtraction(a, b) - Symbol(c), Subtraction)
self.assertIsInstance(Symbol(a) - Subtraction(b, c), Subtraction)
def test__pow__(self, a, b):
Symbol(a)**Symbol(b)
def test__truediv__(self, a, b):
Symbol(a) / Symbol(b)
def test__mul__(self, a, b):
Symbol(a) * Symbol(b)
def test__sub__(self, a, b):
Symbol(a) - Symbol(b)
def test__add__(self, a, b):
Symbol(a) + Symbol(b)
def test_derivative(self, a):
self.assertEqual(Symbol(a).derivative(), 1)
def test__add__(self, a, b):
if a == b:
self.assertIsInstance(Symbol(a) + Symbol(b), Multiplication)
else:
self.assertIsInstance(Symbol(a) + Symbol(b), Addition)
def test__neq__(self, a, b):
if a == b:
return
self.assertNotEqual(Symbol(a), Symbol(b))
def test__eq__(self, a):
self.assertEqual(Symbol(a), Symbol(a))
def test__str__(self, a):
self.assertEqual(str(a), str(Symbol(a)))
def test__init__(self, a):
Symbol(a)
def test__neq__(self, a, b, c):
self.assertNotEqual(Subtraction(a, b), Symbol(c))
if a != b:
self.assertNotEqual(Subtraction(a, b), Subtraction(b, a))
def test__eq__(self, a, b):
self.assertEqual(Subtraction(a, b), Subtraction(a, b))
self.assertEqual(Subtraction(a, b), Addition(a, -Symbol(b)))
self.assertEqual(Subtraction(a, b),
Subtraction(-Symbol(b), -Symbol(a)))
def test__neq__(self, a, b, c):
self.assertNotEqual(Addition(a, b), Symbol(c))