def test_read_mixed_with_frac(self):
ast = self.parse(r'\frac{1}{2} * \frac{3}{4} * \frac{5}{6}')
self.assertEqual(
ast,
Multiplication(
Multiplication(Division(Constant('1'), Constant('2')),
Division(Constant('3'), Constant('4'))),
Division(Constant('5'), Constant('6'))))
def test_read_priority_of_operations_two(self):
ast = self.parse(r'\frac{1}{1 - 2^{1-s}}')
one = Constant('1')
self.assertEqual(
ast,
Division(
one,
Subtraction(
one,
Exponentiation(Constant('2'),
Subtraction(one, Variable('s'))))))
def test_read_mixed_without_times_frac(self):
ast = self.parse(r'\frac{1}{4} \frac{x}{2}')
self.assertEqual(
ast,
Multiplication(Division(Constant('1'), Constant('4')),
Division(Variable('x'), Constant('2'))))
def test_read_mixed_operations_of_constants(self):
ast = self.parse('3 * 2 / 4 * 5')
self.assertEqual(
ast,
Division(Multiplication(Constant('3'), Constant('2')),
Multiplication(Constant('4'), Constant('5'))))
def test_read_frac_of_variables(self):
ast = self.parse('\\frac{x}{y}')
self.assertEqual(ast, Division(Variable('x'), Variable('y')))
def test_read_division_of_variables(self):
ast = self.parse('x / y')
self.assertEqual(ast, Division(Variable('x'), Variable('y')))
def test_read_division_of_multiple_constants(self):
ast = self.parse('3 / 2 / 5')
self.assertEqual(
ast, Division(Division(Constant('3'), Constant('2')),
Constant('5')))