Python - 运行py.test和coverage测试的tox中的InvocationError

时间:2017-07-03 11:49:41

标签: python pytest coverage.py tox

我的项目具有以下结构:

my_project
|
 setup.py
 tox.ini
 src
   |
   core_functions.py 
   client.py
   server.py
   sql_database.py
   tests.py

tests.py文件包含文件client.py, server.py, sql_database.py, core_functions.py

中所有函数的测试

接下来,我创建了tox.ini文件,我想将其用于py.testscoverage tests的自动化。 tox.ini文件的结构如下:

[tox]
envlist = py27,cov

[testenv]
commands = py.test -sv --doctest-modules my_project/__init__.py my_project/tests.py


[testenv:py27]
commands = coverage erase
           coverage run --source=my_project -m pytest
           coverage report -m
deps = pytest

当我在命令行tox中运行时,py.tests成功,但覆盖测试失败并出现以下错误:

============== test session starts ===================
platform darwin -- Python 2.7.13, pytest-3.1.1, py-1.4.33, pluggy-0.4.0
rootdir: /Users/xyz/Documents/ProjectGit/MyProject/my_project, inifile:
plugins: cov-2.5.1
collecting 10334 items / 167 errorsERROR: InvocationError: 
'/Users/xyz/Documents/ProjectGit/MyProject/my_project/.tox/py27/bin/coverage run --source=my_project -m pytest'
cov inst-nodeps: /Users/xyz/Documents/ProjectGit/MyProject/my_project/.tox/dist/my_project-0.0.1.zip
cov installed: asn1crypto==0.22.0,attrs==17.2.0,Automat==0.6.0,bitarray==0.8.1,boto3==1.4.4,
botocore==1.5.59,cffi==1.10.0,constantly==15.1.0,coverage==4.4.1,cryptography==1.9,
cycler==0.10.0,docutils==0.13.1,enum34==1.1.6,Fabric==1.13.2,functools32==3.2.3.post2,
future==0.16.0,futures==3.1.1,idna==2.5,incremental==17.5.0,ipaddress==1.0.18,jmespath==0.9.3,
my_project==0.0.1,matplotlib==2.0.2,msgpack-python==0.4.8,numpy==1.12.1,paramiko==2.1.2,
Paver==1.2.4,petlib==0.0.41,py==1.4.33,pyasn1==0.2.3,pybloom==1.1,pycparser==2.17,
pyparsing==2.2.0,pytest==3.1.1,pytest-cov==2.5.1,python-dateutil==2.6.0,pytz==2017.2,
s3transfer==0.1.10,scapy==2.3.3,scipy==0.19.0,six==1.10.0,sphinxmix==0.0.6,
subprocess32==3.2.7,Twisted==17.1.0,zope.interface==4.4.1
cov runtests: PYTHONHASHSEED='3903710496'
cov runtests: commands[0] | py.test -sv --doctest-modules my_project/__init__.py my_project/tests.py

如何修复我的tox.ini文件以使其正常工作?

1 个答案:

答案 0 :(得分:3)

问题是两次调用之间的区别。

[testenv]你实际上是在打电话:

py.test -sv --doctest-modules my_project/__init__.py my_project/tests.py

但与你正在运行的覆盖范围相当:

py.test
没有参数的

py.test将从当前目录递归并尝试发现测试。这通常不是你想要的(你不关心测试stdlib,以及你添加到virtualenv的所有依赖项等)。

如果您将其他调用的参数添加到覆盖范围内,它将按您的意愿行事:

coverage run --source=my_project -m pytest -sv --doctest-modules my_project/__init__.py my_project/tests.py