测量python线程中的覆盖率

Question

我正试图用一个使用pythonthreading模块创建的线程的代码来衡量代码覆盖率。我使用coverage来测量覆盖范围。然而，我无法获得在线程中运行的代码来进行测量。我尝试遵循覆盖率文档中的建议来测量子流程中的覆盖率，但没有成功。

以下是一个最小的示例文件untitled.py:

import time, threading
import numpy as np

def thread():
print(f'{threading.get_ident()}: started thread')
time.sleep(np.random.uniform(1, 10))
print(f'{threading.get_ident()}: done')

def run_threads():
threads = [threading.Thread(target=thread)]
for t in threads:
t.start()

print('started all threads')

for t in threads:
t.join()

print('all threads done')

if __name__ == '__main__':

run_threads()

> coverage run untitled.py
139952541644544: started thread
started all threads
139952541644544: done
all threads done
> coverage combine
Combined data file .coverage.248973.677959
> coverage report -m
Name          Stmts   Miss  Cover   Missing
-------------------------------------------
untitled.py      14      3    79%   6-8
-------------------------------------------
TOTAL            14      3    79%
> 

如您所见，第6-8行(thread()函数(已执行，但未进行测量。

对于上下文，我在linux机器上运行，Python 3.9.0，coverage6.2。目录包含以下.coveragerc文件：

# .coveragerc to control coverage.py
[run]
source = ./
parallel = True
concurrency = multiprocessing
[report]
# Regexes for lines to exclude from consideration
exclude_lines =
# Have to re-enable the standard pragma
pragma: no cover
# Don't complain about missing debug-only code:
def __repr__
if self.debug
# Don't complain if tests don't hit defensive assertion code:
raise AssertionError
raise NotImplementedError
# Don't complain if non-runnable code isn't run:
if 0:
if __name__ == .__main__.:

我非常感谢你的建议！！

Answer 1

您需要指定"线程"；作为并发设置的一部分：

concurrency = multiprocessing,thread

我不确定你是否需要多重处理。您的示例程序没有使用它，也许您的真实程序也没有。