def test_sum_without_mocking(self):
calculator = Calculator()
actual = calculator.sum(2, 4)
self.assertEqual(6, actual)
class TestCalculator(unittest.TestCase):
# this is the Calculator class instance.
calculator = None
# class level setup function, execute once only before any test function.
@classmethod
def setUpClass(cls):
load_test_data()
print('')
print('setUpClass')
# class level setup function, execute once only after all test function's execution.
@classmethod
def tearDownClass(cls):
close_test_data_file()
print('')
print('tearDownClass')
# execute before every test case function run.
def setUp(self):
self.calculator = Calculator()
print('')
print('setUp')
# execute after every test case function run.
def tearDown(self):
# release the Calculator object.
if self.calculator is not None:
self.calculator = None
print('')
print('tearDown')
# below are function that test Calculator class's plus, minus, multiple and divide functions.
def test_addition(self):
print('')
print('******test_addition******')
# get each row text from the csv file.
for row in test_data_row_list[0]:
# the first column in the text line is x value.
x = row[0]
# the second column in the text line is y value.
y = row[1]
# the third column in the text line is (x + y) value.
expect_result = row[2]
result = self.calculator.sum(x, y)
print(
str(x) + ' + ' + str(y) + ' = ' + str(result) + ', expect ' +
str(expect_result))
self.assertEqual(float(result), float(expect_result))
def test_subtraction(self):
print('')
print('******test_subtraction******')
for row in test_data_row_list[1]:
x = row[0]
y = row[1]
expect_result = row[2]
result = self.calculator.subtract(x, y)
print(
str(x) + ' - ' + str(y) + ' = ' + str(result) + ', expect ' +
str(expect_result))
self.assertAlmostEqual(float(result), float(expect_result))
def test_multiplication(self):
print('')
print('******test_multiplication******')
for row in test_data_row_list[2]:
x = row[0]
y = row[1]
# the fifth column in the text line is (x * y) value.
expect_result = row[2]
result = self.calculator.multiply(x, y)
print(
str(x) + ' * ' + str(y) + ' = ' + str(result) + ', expect ' +
str(expect_result))
self.assertEqual(float(result), float(expect_result))
def test_division(self):
print('')
print('******test_division******')
for row in test_data_row_list[3]:
x = row[0]
y = row[1]
# the sixth column in the text line is (x / y) value.
expect_result = row[2]
result = self.calculator.divide(x, y)
print(
str(x) + ' / ' + str(y) + ' = ' + str(result) + ', expect ' +
str(expect_result))
self.assertEqual(float(result), float(expect_result))
def test_squareRoot(self):
print('')
print('******test_squareRoot******')
for row in test_data_row_list[4]:
x = row[0]
expect_result = row[1]
result = self.calculator.root(x, 2)
print(' √ ' + str(x) + ' = ' + str(result) + ', expect ' +
str(expect_result))
self.assertEqual(float(result), float(expect_result))
def test_squared(self):
print('')
print('******test_squared******')
for row in test_data_row_list[5]:
x = row[0]
# the sixth column in the text line is (x / y) value.
expect_result = row[1]
result = self.calculator.power(x, 2)
print(
str(x) + '² ' + ' = ' + str(result) + ', expect ' +
str(expect_result))
self.assertEqual(float(result), float(expect_result))
