def test_neg_zero(self):
"""
测试前者负数、后者为0相除
:return:
"""
actual_result = MathCalculate(-1, 0).divide()
expect_result = ZeroDivisionError
msg = '测试前者负数、后者为0相除'
fail_msg = '前者负数、后者为0相除测试失败'
try:
self.assertIsInstance(actual_result, expect_result, msg=fail_msg)
except AssertionError as e:
print('具体异常为：{}'.format(e))
self.file.write('{}，执行结果：{}，具体异常为：{}\n'.format(msg, 'fail', e))
raise e
else:
self.file.write('{}，执行结果：{}\n'.format(msg, 'pass'))
def test_neg_pos(self):
"""
测试前者负数、后者正数相减
:return:
"""
actual_result = MathCalculate(-1, 2).minus()
expect_result = -3
msg = '前者负数、后者正数相减测试'
fail_msg = '前者负数、后者正数相减测试失败'
try:
self.assertEqual(actual_result, expect_result, msg=fail_msg)
except AssertionError as e:
self.file.write('{}，执行结果为：{}，具体异常为：{}\n'.format(msg, 'Fail', e))
raise e
else:
self.file.write('{}，执行结果为：{}\n'.format(msg, 'Pass'))
def test_neg_pos(self):
"""
测试前者负数、后者正数相除
:return:
"""
actual_result = MathCalculate(-1, 2).divide()
expect_result = -0.5
msg = '测试前者负数、后者正数相除'
fail_msg = '前者负数、后者正数相除测试失败'
try:
self.assertEqual(actual_result, expect_result, msg=fail_msg)
except AssertionError as e:
print('具体异常为：{}'.format(e))
self.file.write('{}，执行结果：{}，具体异常为：{}\n'.format(msg, 'fail', e))
raise e
else:
self.file.write('{}，执行结果：{}\n'.format(msg, 'pass'))
def test_zero_zero(self):
"""
测试两个0相减
:return:
"""
actual_result = MathCalculate(0, 0).minus()
expect_result = 0
msg = '两个0相减测试'
fail_msg = '两个0相减测试失败'
try:
self.assertEqual(actual_result, expect_result, msg=fail_msg)
except AssertionError as e:
self.file.write('{}，执行结果为：{}，具体异常为：{}\n'.format(msg, 'Fail', e))
raise e
else:
self.file.write('{}，执行结果为：{}\n'.format(msg, 'Pass'))
