def test_greater_than_or_equal(self):
self.assertTrue(evaluate('10 >= 5'))
self.assertFalse(evaluate('5 >= 10'))
self.assertTrue(evaluate('5 >= 5'))
def test_less_than_or_equal(self):
self.assertTrue(evaluate('5 <= 10'))
self.assertFalse(evaluate('10 <= 5'))
self.assertTrue(evaluate('10 <= 10'))
def test_greater_than(self):
self.assertTrue(evaluate('10 > 5'))
self.assertFalse(evaluate('5 > 10'))
self.assertFalse(evaluate('5 > 5'))
def test_strings(self):
with self.assertRaises(UnsupportedOperation):
evaluate('"string"')
def test_items(self):
with self.assertRaises(UnsupportedOperation):
evaluate('b[0]', b=5)
def test_not(self):
self.assertFalse(evaluate('not 10 > 5'))
self.assertTrue(evaluate('not 5 > 10'))
def test_comparisons_with_variable(self):
self.assertTrue(evaluate('a < 10', a=5))
def test_division(self):
self.assertEqual(evaluate('10 / 2'), 5)
def test_exponentiation(self):
self.assertEqual(evaluate('5 ** 2'), 25)
def test_subtraction(self):
self.assertEqual(evaluate('5 - 2'), 3)
def test_multiplication(self):
self.assertEqual(evaluate('3 * 2'), 6)
def test_non_expression_code(self):
with self.assertRaises(BadExpression):
evaluate('a = 5')
def test_addition(self):
self.assertEqual(evaluate('2 + 2'), 4)
def test_multiple_expressions(self):
with self.assertRaises(BadExpression):
evaluate('5 + 5; 2 + 2')
def test_and(self):
self.assertTrue(evaluate('10 > 5 and 10 > 6'))
self.assertFalse(evaluate('10 < 5 and 10 > 6'))
self.assertFalse(evaluate('10 > 5 and 10 < 6'))
self.assertFalse(evaluate('10 < 5 and 10 < 6'))
def test_modulo(self):
self.assertEqual(evaluate('10 % 3'), 1)
def test_or(self):
self.assertTrue(evaluate('10 > 5 or 10 > 6'))
self.assertTrue(evaluate('10 < 5 or 10 > 6'))
self.assertTrue(evaluate('10 > 5 or 10 < 6'))
self.assertFalse(evaluate('10 < 5 or 10 < 6'))
def test_equal(self):
self.assertTrue(evaluate('5 == 5'))
self.assertFalse(evaluate('10 == 5'))
def test_calculating_with_variables(self):
self.assertEqual(evaluate('a + b', a=2, b=3), 5)
def test_unequal(self):
self.assertFalse(evaluate('5 != 5'))
self.assertTrue(evaluate('5 != 10'))
def test_undefined_variables(self):
with self.assertRaises(UndefinedVariable):
evaluate('a + b', a=3)
def test_less_than(self):
self.assertTrue(evaluate('5 < 10'))
self.assertFalse(evaluate('10 < 5'))
self.assertFalse(evaluate('10 < 10'))
def test_attrs(self):
with self.assertRaises(UnsupportedOperation):
evaluate('b.attr', b=5)
def test_computer(code, result):
assert evaluate(code) == result