[英]Pytest with mock/pytest-mock
For some reason I cannot get mock.patch to work in any scenario when using Pytest.出于某种原因,在使用 Pytest 时,我无法让 mock.patch 在任何情况下工作。 It simply doesn't do the patching.
它根本不进行修补。 Am I using it incorrectly or is something messed up with my configuration?
是我使用不当还是我的配置有问题?
base.py基础文件
def foo():
return 'foo'
def get_foo():
return foo()
test_base.py test_base.py
import pytest
import mock
from pytest_mock import mocker
from base import get_foo
@mock.patch('base.foo')
def test_get_foo(mock_foo):
mock_foo.return_value = 'bar'
assert get_foo() == 'bar'
def test_get_foo2(mocker):
m = mocker.patch('base.foo', return_value='bar')
assert get_foo() == 'bar'
def test_get_foo3():
with mock.patch('base.foo', return_value='bar') as mock_foo:
assert get_foo() == 'bar'
pytest results pytest 结果
============================================================= test session starts =============================================================
platform linux2 -- Python 2.7.13, pytest-3.0.7, py-1.4.33, pluggy-0.4.0
rootdir: /projects/git/ABC/query, inifile:
plugins: mock-1.6.0
collected 13 items
test_base.py .....FFF.....
================================================================== FAILURES ===================================================================
________________________________________________________________ test_get_foo _________________________________________________________________
mock_foo = <MagicMock name='foo' id='140418877133648'>
@mock.patch('base.foo')
def test_get_foo(mock_foo):
mock_foo.return_value = 'bar'
> assert get_foo() == 'bar'
E AssertionError: assert 'foo' == 'bar'
E - foo
E + bar
test_base.py:67: AssertionError
________________________________________________________________ test_get_foo2 ________________________________________________________________
mocker = <pytest_mock.MockFixture object at 0x7fb5d14bc210>
def test_get_foo2(mocker):
m = mocker.patch('base.foo', return_value='bar')
> assert get_foo() == 'bar'
E AssertionError: assert 'foo' == 'bar'
E - foo
E + bar
test_base.py:71: AssertionError
________________________________________________________________ test_get_foo3 ________________________________________________________________
def test_get_foo3():
with mock.patch('base.foo', return_value='bar') as mock_foo:
> assert get_foo() == 'bar'
E AssertionError: assert 'foo' == 'bar'
E - foo
E + bar
test_base.py:75: AssertionError
The problem was due to the relationship between my import specification and PATH variable.问题是由于我的导入规范和 PATH 变量之间的关系。 If I specified the entire path in the
patch
argument, like: @mock.patch('<PROJECT_ROOT>.<SUBPACKAGE>.base.foo')
where PATH had the parent directory of as an entry, then it worked.如果我在
patch
参数中指定了整个路径,例如: @mock.patch('<PROJECT_ROOT>.<SUBPACKAGE>.base.foo')
其中 PATH 具有作为条目的父目录,那么它就起作用了。 I don't know why it wasn't throwing an import error if it wasn't finding base.foo
.如果没有找到
base.foo
我不知道为什么它不会抛出导入错误。 And if it wasn't finding it, I don't understand how the scope was different.如果它没有找到它,我不明白范围有什么不同。
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