高级编程技术 hw week6

11-1：

import unittest
def city_function(city,country):
    return city.title()+', '+country.title()
class TestCities(unittest.TestCase):    
    def test_city_country(self):
        format_ans=city_function('shenzhen','china')
        self.assertEqual(format_ans,'Shenzhen, China')
unittest.main()

本题输出如下：

.
----------------------------------------------------------------------
Ran 1 test in 0.000s


OK

11-2：

population为必选参数时：

import unittest
def city_function(city,country,population):
    return city.title()+', '+country.title()+' - population '+population
class TestCities(unittest.TestCase):    
    def test_city_country(self):
        format_ans=city_function('shenzhen','china')
        self.assertEqual(format_ans,'Shenzhen, China')

unittest.main()

输出为：

E
======================================================================
ERROR: test_city_country (__main__.TestCities)
----------------------------------------------------------------------
Traceback (most recent call last):
  File ".\hw week6.py", line 7, in test_city_country
    format_ans=city_function('shenzhen','china')
TypeError: city_function() missing 1 required positional argument: 'population'

----------------------------------------------------------------------
Ran 1 test in 0.001s

FAILED (errors=1)

population为可选参数时：

import unittest
def city_function(city,country,population=0):
    if population:
        return city.title()+', '+country.title()+' - population '+str(population)
    else:
        return city.title()+', '+country.title()
class TestCities(unittest.TestCase):    
    def test_city_country(self):
        format_ans=city_function('shenzhen','china')
        self.assertEqual(format_ans,'Shenzhen, China')

unittest.main()

输出为：

.
----------------------------------------------------------------------
Ran 1 test in 0.000s

OK

再添加一个测试函数后：

import unittest
def city_function(city,country,population=0):
    if population:
        return city.title()+', '+country.title()+' - population '+str(population)
    else:
        return city.title()+', '+country.title()
class TestCities(unittest.TestCase):    
    def test_city_country(self):
        format_ans=city_function('shenzhen','china')
        self.assertEqual(format_ans,'Shenzhen, China')
    def test_city_country_population(self):
        format_ans=city_function('shenzhen','china',12528300)
        self.assertEqual(format_ans,'Shenzhen, China - population 12528300')
unittest.main()

输出为：

..
----------------------------------------------------------------------
Ran 2 tests in 0.000s

OK

11-3：

class Employee:
    def __init__ (self,firstname,lastname,salary_for_year=0):
        self.firstname=firstname
        self.lastname=lastname
        self.salary_for_year=salary_for_year
    def give_raise(self,salary_raise=5000):
        self.salary_for_year=salary_raise

import unittest
class Test(unittest.TestCase):
    def setUp(self):
        self.salary=10000
        self.employee=Employee('Taylor','Green')
    def test_give_default_raise(self):
        self.employee.give_raise()
        self.assertEqual(5000,self.employee.salary_for_year)
    def test_give_custom_raise(self):
        self.employee.give_raise(self.salary)
        self.assertEqual(10000,self.employee.salary_for_year)
unittest.main()

输出如下：

..
----------------------------------------------------------------------
Ran 2 tests in 0.000s

OK