AttributeError: 'Config' object has no attribute 'test_system'
AttributeError: 'Config' object has no attribute 'test_system'
rootdir: python, inifile: pytest.ini, testpaths: test_cases
plugins: metadata-1.8.0, html-1.22.0, sugar-0.9.2, timeout-1.3.3, forked-1.0.2, xdist-1.29.0, repeat-0.8.0
timeout: 3600.0s
timeout method: signal
timeout func_only: False
gw0 ok / gw1 ok / gw2 ok
../python-venv/lib/python2.7/site-packages/pluggy/hooks.py:289: in __call__
return self._hookexec(self, self.get_hookimpls(), kwargs)
../python-venv/lib/python2.7/site-packages/pluggy/manager.py:87: in _hookexec
return self._inner_hookexec(hook, methods, kwargs)
../python-venv/lib/python2.7/site-packages/pluggy/manager.py:81: in <lambda>
firstresult=hook.spec.opts.get("firstresult") if hook.spec else False,
../python-venv/lib/python2.7/site-packages/_pytest/python.py:234: in pytest_pycollect_makeitem
res = list(collector._genfunctions(name, obj))
../python-venv/lib/python2.7/site-packages/_pytest/python.py:410: in _genfunctions
self.ihook.pytest_generate_tests(metafunc=metafunc)
../python-venv/lib/python2.7/site-packages/pluggy/hooks.py:289: in __call__
return self._hookexec(self, self.get_hookimpls(), kwargs)
../python-venv/lib/python2.7/site-packages/pluggy/manager.py:87: in _hookexec
return self._inner_hookexec(hook, methods, kwargs)
../python-venv/lib/python2.7/site-packages/pluggy/manager.py:81: in <lambda>
firstresult=hook.spec.opts.get("firstresult") if hook.spec else False,
../../modules/test/python/test_cases/uts_plugin.py:20: in pytest_generate_tests
for build_config in metafunc.config.test_system.build_configuration.get(
E AttributeError: 'Config' object has no attribute 'test_system'
gw0 [1] / gw1 ok / gw2 ok
所有测试 运行 在不使用“-n”选项的情况下都很好。我打印了 config 的属性,它里面确实有 test_system,但我不知道为什么它会失败。
使用 xdist
分发测试时在主节点和工作节点之间共享数据的常用方法是实现 pytest_configure_node
挂钩,然后按以下方式访问数据:
if hasattr(request.config, 'slaveinput'):
... # we are in worker node
else:
... # we are in master
这是我试图与您发布的异常回溯关联的示例:
class TestSystem:
def __init__(self):
self.build_configuration = dict()
def pytest_configure(config):
if hasattr(config, 'slaveinput'): # slave
return
# we are on master node
# create test system object, attach to config
s = TestSystem()
s.build_configuration['foo'] = 'bar'
config.test_system = s
def pytest_configure_node(node):
# this is the pendant of pytest_configure hook, but for worker nodes only
# store serializable stuff from test system object in slaveinput
node.slaveinput['test_system_serialized'] = node.config.test_system.build_configuration
def pytest_generate_tests(metafunc):
if hasattr(metafunc.config, 'slaveinput'): # we are in worker node
# restore test system object using serialized data
s = TestSystem()
s.build_configuration = metafunc.config.slaveinput['test_system_serialized']
else: # master
# simply get test system instance from config
s = metafunc.config.test_system
# generate tests
if 'test_system' in metafunc.fixturenames:
metafunc.parametrize('test_system', [s])
请注意,您不能在主服务器和工作服务器之间共享 TestSystem
实例,只能共享原始数据类型(字符串、数字、列表、字典等)。这就是为什么只有 build_configuration
dict 存储在 slaveinput
中并且每个工作人员从共享数据重新创建自己的 TestSystem
对象。
示例测试:
import time
import pytest
@pytest.mark.parametrize('n', range(1, 5))
def test_eggs(n, test_system):
time.sleep(1)
assert test_system.build_configuration['foo'] == 'bar'
运行 测试连续产生:
$ pytest -v
...
test_spam.py::test_eggs[test_system0-1] PASSED
test_spam.py::test_eggs[test_system0-2] PASSED
test_spam.py::test_eggs[test_system0-3] PASSED
test_spam.py::test_eggs[test_system0-4] PASSED
运行分布式模式测试:
$ pytest -v -n4
...
scheduling tests via LoadScheduling
test_spam.py::test_eggs[test_system0-1]
test_spam.py::test_eggs[test_system0-2]
test_spam.py::test_eggs[test_system0-4]
test_spam.py::test_eggs[test_system0-3]
[gw1] [ 25%] PASSED test_spam.py::test_eggs[test_system0-2]
[gw2] [ 50%] PASSED test_spam.py::test_eggs[test_system0-3]
[gw0] [ 75%] PASSED test_spam.py::test_eggs[test_system0-1]
[gw3] [100%] PASSED test_spam.py::test_eggs[test_system0-4]
rootdir: python, inifile: pytest.ini, testpaths: test_cases
plugins: metadata-1.8.0, html-1.22.0, sugar-0.9.2, timeout-1.3.3, forked-1.0.2, xdist-1.29.0, repeat-0.8.0
timeout: 3600.0s
timeout method: signal
timeout func_only: False
gw0 ok / gw1 ok / gw2 ok
../python-venv/lib/python2.7/site-packages/pluggy/hooks.py:289: in __call__
return self._hookexec(self, self.get_hookimpls(), kwargs)
../python-venv/lib/python2.7/site-packages/pluggy/manager.py:87: in _hookexec
return self._inner_hookexec(hook, methods, kwargs)
../python-venv/lib/python2.7/site-packages/pluggy/manager.py:81: in <lambda>
firstresult=hook.spec.opts.get("firstresult") if hook.spec else False,
../python-venv/lib/python2.7/site-packages/_pytest/python.py:234: in pytest_pycollect_makeitem
res = list(collector._genfunctions(name, obj))
../python-venv/lib/python2.7/site-packages/_pytest/python.py:410: in _genfunctions
self.ihook.pytest_generate_tests(metafunc=metafunc)
../python-venv/lib/python2.7/site-packages/pluggy/hooks.py:289: in __call__
return self._hookexec(self, self.get_hookimpls(), kwargs)
../python-venv/lib/python2.7/site-packages/pluggy/manager.py:87: in _hookexec
return self._inner_hookexec(hook, methods, kwargs)
../python-venv/lib/python2.7/site-packages/pluggy/manager.py:81: in <lambda>
firstresult=hook.spec.opts.get("firstresult") if hook.spec else False,
../../modules/test/python/test_cases/uts_plugin.py:20: in pytest_generate_tests
for build_config in metafunc.config.test_system.build_configuration.get(
E AttributeError: 'Config' object has no attribute 'test_system'
gw0 [1] / gw1 ok / gw2 ok
所有测试 运行 在不使用“-n”选项的情况下都很好。我打印了 config 的属性,它里面确实有 test_system,但我不知道为什么它会失败。
使用 xdist
分发测试时在主节点和工作节点之间共享数据的常用方法是实现 pytest_configure_node
挂钩,然后按以下方式访问数据:
if hasattr(request.config, 'slaveinput'):
... # we are in worker node
else:
... # we are in master
这是我试图与您发布的异常回溯关联的示例:
class TestSystem:
def __init__(self):
self.build_configuration = dict()
def pytest_configure(config):
if hasattr(config, 'slaveinput'): # slave
return
# we are on master node
# create test system object, attach to config
s = TestSystem()
s.build_configuration['foo'] = 'bar'
config.test_system = s
def pytest_configure_node(node):
# this is the pendant of pytest_configure hook, but for worker nodes only
# store serializable stuff from test system object in slaveinput
node.slaveinput['test_system_serialized'] = node.config.test_system.build_configuration
def pytest_generate_tests(metafunc):
if hasattr(metafunc.config, 'slaveinput'): # we are in worker node
# restore test system object using serialized data
s = TestSystem()
s.build_configuration = metafunc.config.slaveinput['test_system_serialized']
else: # master
# simply get test system instance from config
s = metafunc.config.test_system
# generate tests
if 'test_system' in metafunc.fixturenames:
metafunc.parametrize('test_system', [s])
请注意,您不能在主服务器和工作服务器之间共享 TestSystem
实例,只能共享原始数据类型(字符串、数字、列表、字典等)。这就是为什么只有 build_configuration
dict 存储在 slaveinput
中并且每个工作人员从共享数据重新创建自己的 TestSystem
对象。
示例测试:
import time
import pytest
@pytest.mark.parametrize('n', range(1, 5))
def test_eggs(n, test_system):
time.sleep(1)
assert test_system.build_configuration['foo'] == 'bar'
运行 测试连续产生:
$ pytest -v
...
test_spam.py::test_eggs[test_system0-1] PASSED
test_spam.py::test_eggs[test_system0-2] PASSED
test_spam.py::test_eggs[test_system0-3] PASSED
test_spam.py::test_eggs[test_system0-4] PASSED
运行分布式模式测试:
$ pytest -v -n4
...
scheduling tests via LoadScheduling
test_spam.py::test_eggs[test_system0-1]
test_spam.py::test_eggs[test_system0-2]
test_spam.py::test_eggs[test_system0-4]
test_spam.py::test_eggs[test_system0-3]
[gw1] [ 25%] PASSED test_spam.py::test_eggs[test_system0-2]
[gw2] [ 50%] PASSED test_spam.py::test_eggs[test_system0-3]
[gw0] [ 75%] PASSED test_spam.py::test_eggs[test_system0-1]
[gw3] [100%] PASSED test_spam.py::test_eggs[test_system0-4]