Django unittest assertRaise自定义错误

Question

我已经定义了一个自定义错误，但是如果我测试是否得到了自定义错误
提出来，它失败了。

我的models.py:

class CustomError(Exception):
    """
    This exception is my custom error
    """

class Company(models.Model):
    name = models.CharField(max_length=200)

    def test_error(self):
    raise CustomError('hello')

在我的tests.py中:

import unittest
from myapp.models import Company,Customer,Employee,Location,Product,ProductCategory,AllreadyPayedError,CustomError

class CompanyTestCase(unittest.TestCase):
    def setUp(self):
        self.company = Company.objects.create(name="lizto")

    def test2(self):
        self.assertRaises(CustomError, self.company.test_error)

测试失败，显示以下输出:

======================================================================
ERROR: test2 (myapp.api.tests.CompanyTestCase)
----------------------------------------------------------------------
Traceback (most recent call last):
  File "/Users/......./tests.py", line 27, in test2
    self.assertRaises(CustomError, self.company.test_error)
  File "/System/Library/Frameworks/Python.framework/Versions/2.5/lib/
python2.5/unittest.py", line 320, in failUnlessRaises
    callableObj(*args, **kwargs)
  File "    /Users/....../models.py", line 17, in test_error
    raise CustomError('hello')
CustomError: hello

----------------------------------------------------------------------
Ran 18 tests in 1.122s

任何人都知道如果提高 CustomError我应该怎么做才能测试

Answer 1

您可以捕获该错误并断言它已发生。

例如:(未测试)

def test2(self)
    error_occured = False
    try:
        self.company.test_error()
    except CustomError:
        error_occured = True

    self.assertTrue(error_ocurred)

似乎远非理想，但会解开您的障碍。