Use set_log_path hook,but only create log file, nothing in it.

[trimQiu]

Using the 'set_log_path' hook on pytest 4.6.2 (Python 3.6.5) creates log files but does not write anything to them.

In conftest.py I write like #4707

@pytest.hookimpl(hookwrapper=True,tryfirst=True)
def pytest_runtest_setup(item):
    config=item.config
    logging_plugin=config.pluginmanager.get_plugin("logging-plugin")
    full_fname=os.path.join("Report",item._request.node.name+".log")
    logging_plugin.set_log_path(full_fname)
    yield

After running the pytest command, there are some log files in the "Report" folder. But size of all log files is 0. My test code is like this：

def test_ok1():
	logging.info("ok1")
	
def test_ok2():
	logging.info("ok2")

[Zac-HD]

Are you sure that logs are being emitted from those tests? What happens if you don't configure it to log to a file?

It looks to me like you need to (a) use the caplog fixture, and (b) configure it to capture logging levels below WARNING (the default).

[CameronHudson8]

I'm using the --log-file=./myfile.log argument, and I have the same problem: A log file is created, but it's blank. I have failing tests, so I doubt that an insufficient log level is to blame.

[The-Compiler]

@CameronHudson8 Your issue is unrelated to this (see #5659).

[Zac-HD]

Closing as stale.