[英]How to redirect Python's unittest modules error traceback to log file using logging module?
I have a python test script and I am trying to redirect its output(stdout and stderr) both to console and a log file.The script produces following output in console which is what I want. 我有一个python测试脚本,我试图将其输出(stdout和stderr)都重定向到控制台和日志文件。该脚本在控制台中生成我想要的以下输出。
test_valid_timerange (testapp.TestApp) ... FAIL
test_has_dashboard_description (testapp.TestApp) ... ok
======================================================================
FAIL: test_valid_timerange (testapp.TestApp)
----------------------------------------------------------------------
Traceback (most recent call last):
File "/Users/himanshu/git/content/test/testapp.py", line 135, in test_valid_timerange
"%s: panel %s in dashboard %s does not use relative url" % (self.appname, dash.get("name"), panel.get("name")))
AssertionError: Kubernetes: panel Kubernetes - Kube-System in dashboard Pod and Container Running in Kube-System does not use relative url
----------------------------------------------------------------------
Ran 2 tests in 0.001s
FAILED (failures=1)
But in log file I am getting only this. 但是在日志文件中,我只能得到这个。
2018-06-29 18:29:56,289 [MainThread ] [INFO ] Starting Tests for manifestfile: /Users/himanshu/git/content/src/main/app-package/kubernetes/kops/kubernetes.manifest.json appfile: /Users/himanshu/git/content/src/main/app-package/kubernetes/kops/kubernetes.json
2018-06-29 18:29:56,341 [MainThread ] [INFO ] testing Kubernetes: test_valid_timerange
2018-06-29 18:29:56,341 [MainThread ] [INFO ] testing Kubernetes: test_has_dashboard_description
2018-06-29 18:29:56,342 [MainThread ] [DEBUG] Results - Total TestCases: 2 Total Failed: 1
I know one way of doing it is to explicitly get failures and errors from result object of test and printing them using a logger whose handler outputs only to file(This is because if I use my current logger it has both streamhandler and filehandler and it will print failure messages two times in console). 我知道这样做的一种方法是从测试结果对象中明确获取失败和错误,并使用记录程序将其打印出来,记录程序的处理程序仅输出到文件(这是因为如果使用当前的记录程序,它既具有流处理程序又具有文件处理程序,并且它将在控制台中两次打印失败消息)。 This is my current code 这是我当前的代码
def get_logger():
log = logging.getLogger(__name__)
if not log.handlers:
log.setLevel(logging.DEBUG)
logFormatter = logging.Formatter("%(asctime)s [%(threadName)-12.12s] [%(levelname)-5.5s] %(message)s")
consoleHandler = logging.StreamHandler(sys.stdout)
consoleHandler.setFormatter(logFormatter)
log.addHandler(consoleHandler)
filehandler = RotatingFileHandler(LOGFILE, maxBytes=(1024*1024*25), backupCount=7)
filehandler.setFormatter(logFormatter)
log.addHandler(filehandler)
return log
logger = get_logger()
suite = unittest.TestSuite()
// using suite.addTest to add tests and using logger in each test function
result = unittest.TextTestRunner().run(suite)
Is there any other better way possible without creating another logger with a single handler? 如果不使用单个处理程序创建另一个记录器,还有其他更好的方法吗? I am looking for alternatives like passing a logger while create test suite (unittest.TestSuite(logger=mylogger)) or using the same logger but explicitly passing an argument to use a specific handler(logger.info(msg, using=filehandler)) or pass some argument which stops printing failure msg to console and i can use my custom logger to print to both console and file. 我正在寻找替代方案,例如在创建测试套件时传递记录器(unittest.TestSuite(logger = mylogger))或使用相同的记录器,但显式传递参数以使用特定的处理程序(logger.info(msg,using = filehandler))或通过传递一些参数来停止向控制台输出失败的消息,我可以使用我的自定义记录器同时打印到控制台和文件。
I used something similar to as mentioned here 我使用了类似于此处提到的内容
class LoggerWriter:
def __init__(self, logger):
self.logger = logger
def write(self, message):
if message != '\n' and message != " ... ":
self.logger.debug(message)
def flush(self):
pass
suite = unittest.TestSuite()
result = unittest.TextTestRunner(stream=LoggerWriter(logger), verbosity=3).run(suite)
PS I still don't know whether it's the best way to solve the problem. PS我仍然不知道这是否是解决问题的最佳方法。
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