Python-Chapter11

2018-04-16

作业的完整代码我放在Github上，可以在我的github中查看。

11-1：城市和国家：

city_functions.py:

1 2	def city_country(city, country): return '%s, %s' % (city, country)

test_cities.py:

import unittest
from city_functions import city_country

class CityTestCase(unittest.TestCase):
    def test_city_country(self):
        result = city_country('Santiago', 'Chile')
        self.assertEqual(result, 'Santiago, Chile')

if __name__ == '__main__':
    unittest.main()

运行：
11-1

11-2：人口数量：

1

city_functions.py:

1 2	def city_country(city, country, population): return '%s, %s - population %d' % (city, country, population)

test_cities.py:

import unittest
from city_functions import city_country

class CityTestCase(unittest.TestCase):
    def test_city_country(self):
        result = city_country('Santiago', 'Chile')
        self.assertEqual(result, 'Santiago, Chile')

if __name__ == '__main__':
    unittest.main()

运行：
11-2-1

2

city_functions.py:

def city_country(city, country, population=0):
    if population:
        return '%s, %s - population %d' % (city, country, population)
    else:
        return '%s, %s' % (city, country)

test_cities.py:

import unittest
from city_functions import city_country

class CityTestCase(unittest.TestCase):
    def test_city_country(self):
        result = city_country('Santiago', 'Chile')
        self.assertEqual(result, 'Santiago, Chile')

if __name__ == '__main__':
    unittest.main()

运行：
11-2-2

3

city_functions.py:

def city_country(city, country, population=0):
    if population:
        return '%s, %s - population %d' % (city, country, population)
    else:
        return '%s, %s' % (city, country)

test_cities.py:

import unittest
from city_functions import city_country

class CityTestCase(unittest.TestCase):
    def test_city_country(self):
        result = city_country('Santiago', 'Chile')
        self.assertEqual(result, 'Santiago, Chile')

    def test_city_country_population(self):
        result = city_country('Santiago', 'Chile', population=500000)
        self.assertEqual(result, 'Santiago, Chile - population 500000')

if __name__ == '__main__':
    unittest.main()

运行：
11-2-3

11-3：雇员：

employee.py:

class Employee:
    def __init__(self, fn, sn, sl):
        self.first_name = fn
        self.second_name = sn
        self.salary = sl

    def give_raise(self, bonus=5000):
        self.salary += bonus

test_employee.py:

import unittest
from employee import Employee

class EmployeeTest(unittest.TestCase):
    def setUp(self):
        self.em = Employee('Wang', 'Ming', 10000)

    def test_give_default_raise(self):
        self.em.give_raise()
        self.assertEqual(self.em.salary, 15000)

    def test_give_custom_raise(self):
        """self.em的状态不会发生改变，和初始化状态一样"""
        self.em.give_raise(10000)
        self.assertEqual(self.em.salary, 20000)

if __name__ == '__main__':
    unittest.main()

运行：
11-3