一 实战——自动化测试

1 game.py

#coding:utf-8
class Room(object):

    def __init__(self, name, description):
        self.name = name
        self.description = description
        self.paths = {}
        
    #返回依据direction在paths中的到的值    
    def go(self, direction):
        return self.paths.get(direction, None)    
    
    #给paths赋值   
    def add_paths(self, paths):    
        self.paths.update(paths)

2 ex47_test.py

#coding:utf-8
from nose.tools import *
from ex47.game import Room
# 在ex47项目的skeleton文件夹下面——输入：nosetests
# nose是指令，tests--是执行nose指令的文件夹
# tests文件夹中的xx_tests.py文件就是测试文件，
# 里面有几个函数就测试就是几个测试用例
def test_room():
    gold = Room("GoldRoom",
                """This room has gold in it you can grab. There's a
                door to the north.""")                
    assert_equal(gold.name, "GoldRoom")
    assert_equal(gold.paths, {})
    
def test_room_paths():
    center = Room("Center", "Test room in the center.")
    north = Room("North", "Test room in the north.")
    south = Room("South", "Test room in the south.")
    
    center.add_paths({'north': north, 'south': south})
    assert_equal(center.go('north'), north)
    assert_equal(center.go('south'), south)    # 用断言判断两个值是否相等
    
def test_map():
    start = Room("Start", "You can go west and down a hole.")
    west = Room("Trees", "There are trees here, you can go east.")
    down = Room("Dungeon", "It's dark down here,you can go up.")
    
    start.add_paths({'west': west, 'down': down})
    west.add_paths({'east': start})
    down.add_paths({'up': start})
    
    assert_equal(start.go('west'), west)
    assert_equal(start.go('west').go('east'), start)
    assert_equal(start.go('down').go('up'), start)
    
# 笔记    
# 1.测试脚本要放在test/目录下，并且命名为xx_tests.py,否则nosetests就不会执行
# 你的测试脚本了。这样还有一个好处就是防止测试代码和别的代码互相混掉。
# 2.为你的每一个模块写一个测试。
# 3.测试用例（函数）保持简短，但如果看上去不怎么整洁也没关系，测试用例一般都有点乱。
# 4.就算测试用例有些乱，也要试着让他们保持整洁，把里面的重复代码删掉。创建一些辅助
# 函数来避免重复的代码。因为重复的代码会让修改测试变的十分困难
# 5.最后一条是别把测试当回事。有时候，更好的方法是把代码和测试全部删掉
# 然后重新设计代码。——好的代码不是一次就写出来的    

二 测试结果

E:\Python\exercise\ex47\skeleton>nosetests
...
----------------------------------------------------------------------
Ran 3 tests in 0.034s

OK