def test_str_method_of_classes(self):
four = s.create_constant(4)
y = s.create_variable('y')
f = four + 3.5 * (y - 2)
self.assertEqual(str(four), '4')
self.assertEqual(str(y), 'y')
self.assertEqual(str(f), '(4 + (3.5 * (y - 2)))')
def test_expressions(self):
four = s.create_constant(4)
y = s.create_variable('y')
f = four / 2 + 3.5 * (y - 2)
d = (3 + 1j) + y
z = 15 - 2 / four * (12 / f)
self.assertEqual(d.evaluate(y=2), 5 + 1j)
self.assertEqual(f.evaluate(y=2), 2)
self.assertEqual(f.evaluate(y=0), -5)
self.assertEqual(z.evaluate(y=2, x=3), 12.0)
def test_constant_evaluation(self):
self.assertEqual(second.create_variable('x').evaluate(x=42), 42)
self.assertEqual(second.create_constant(5).evaluate(), 5)
def test_operators(self):
y = second.create_variable('y')
twelve = second.create_constant(12)
expression = y + twelve
self.assertEqual(expression.evaluate(y=3), 15)
def test_constant_evaluation(self):
self.assertEqual(second.create_variable('x').evaluate(x=42), 42)
self.assertEqual(second.create_constant(5).evaluate(), 5)
def test_operators(self):
y = second.create_variable('y')
twelve = second.create_constant(12)
expression = y + twelve
self.assertEqual(expression.evaluate(y=3), 15)
def test_create_constant(self):
const = s.create_constant(4.5)
self.assertEqual(str(const), '4.5')
self.assertEqual(const.evaluate(), 4.5)
