[英]Fixing python/nose2/bin/nose2: not found
我正在OOP中接受测试,预计将在其中创建ShoppingCart。
我已经编写了通过unittest所有测试的代码,但是当我尝试提交时,出现此错误/错误
/ bin / sh:1:python / nose2 / bin / nose2:找不到
下面显示了我的代码和单元测试。 Unittiest
import unittest
class ShoppingCartTestCases(unittest.TestCase):
def setUp(self):
self.cart = ShoppingCart()
self.shop = Shop()
def test_cart_property_initialization(self):
self.assertEqual(self.cart.total, 0, msg='Initial value of total not correct')
self.assertIsInstance(self.cart.items, dict, msg='Items is not a dictionary')
def test_add_item(self):
self.cart.add_item('Mango', 3, 10)
self.assertEqual(self.cart.total, 30, msg='Cart total not correct after adding items')
self.assertEqual(self.cart.items['Mango'], 3, msg='Quantity of items not correct after adding item')
def test_remove_item(self):
self.cart.add_item('Mango', 3, 10)
self.cart.remove_item('Mango', 2, 10)
self.assertEqual(self.cart.total, 10, msg='Cart total not correct after removing item')
self.assertEqual(self.cart.items['Mango'], 1, msg='Quantity of items not correct after removing item')
def test_checkout_returns_correct_balance(self):
self.cart.add_item('Mango', 3, 10)
self.cart.add_item('Orange', 16, 10)
self.assertEqual(self.cart.checkout(265), 75, msg='Balance of checkout not correct')
self.assertEqual(self.cart.checkout(25), 'Cash paid not enough', msg='Balance of checkout not correct')
def test_shop_is_instance_of_shopping_cart(self):
self.assertTrue(isinstance(self.shop, ShoppingCart), msg='Shop is not a subclass of ShoppingCart')
def test_shop_remove_item_method(self):
for i in range(15):
self.shop.remove_item()
self.assertEqual(self.shop.quantity, 85)
mycode的
class ShoppingCart(object):
def __init__(self):
self.total = 0
self.items = {}
def add_item(self, item_name, quantity, price):
if item_name and quantity >= 1:
self.items.update({item_name : quantity})
if quantity and price >= 1:
self.total += (quantity * price)
def remove_item(self, item_name, quantity, price):
self.total -= (quantity * price)
if quantity >= self.items[item_name]:
try:
del self.items[item_name]
except (KeyError, ValueError):
return None
self.items[item_name] -= quantity
def checkout(self, cash_paid):
balance = 0
if cash_paid < self.total:
return "Cash paid not enough"
balance = cash_paid - self.total
return balance
class Shop(ShoppingCart):
def __init__(self):
ShoppingCart.__init__(self)
self.quantity = 100
def remove_item(self):
self.quantity -= 1
问题的根本原因在于unittest类中的setUp()方法。 因此,在诸如IDLE之类的python开发环境上运行unittest类会进一步暴露该问题。 完全错误实际上是这样的
“桌面/实践python / shoppingcarttestcases.py”,setUp self.cart = ShoppingCart()中的第4行,名称错误:未定义全局名称'ShoppingCart'
解决方案可能在于正确定义/继承/实现购物车类。
我希望这可以缩小范围。 如果您认为这有帮助,并找到解决方案,请也张贴在论坛上。
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