Question

我正在使用nosetest工具断言python unittest：

...
from nose.tools import assert_equals, assert_almost_equal

class TestPolycircles(unittest.TestCase):

    def setUp(self):
        self.latitude = 32.074322
        self.longitude = 34.792081
        self.radius_meters = 100
        self.number_of_vertices = 36
        self.vertices = polycircles.circle(latitude=self.latitude,
                                           longitude=self.longitude,
                                           radius=self.radius_meters,
                                           number_of_vertices=self.number_of_vertices)

    def test_number_of_vertices(self):
        """Asserts that the number of vertices in the approximation polygon
        matches the input."""
        assert_equals(len(self.vertices), self.number_of_vertices)

    ...

当我运行python setup.py test时，我收到了弃用警告：

...
Asserts that the number of vertices in the approximation polygon ...
/Users/adamatan/personal/polycircles/polycircles/test/test_polycircles.py:22:    
DeprecationWarning: Please use assertEqual instead.
  assert_equals(len(self.vertices), self.number_of_vertices)
ok
...

我在鼻子工具中找不到任何assertEqual。这个警告来自哪里，我该如何解决？

Answer 1

nose.tools assert_*函数仅为TestCase方法自动创建PEP8 别名，因此assert_equals与{{1}相同}}

但是，后者只是TestCase.assertEquals()的别名（注意：没有尾随TestCase.assertEqual() ）。该警告旨在告诉您，您需要s而不是TestCase.assertEquals()而不是alias has been deprecated。

对于转换为使用TestCase.assertEqual()的{{1}}（无跟踪nose.tools）：

assert_equal

如果您使用s（尾随from nose.tools import assert_equal, assert_almost_equal def test_number_of_vertices(self): """Asserts that the number of vertices in the approximation polygon matches the input.""" assert_equal(len(self.vertices), self.number_of_vertices)），您也会看到使用assert_almost_equals的类似警告。

Python 3.3：使用nose.tools.assert_equals时的DeprecationWarning

1 个答案: