Previously, a LoggingCaptureHandler was instantiated for each test's
setup/call/teardown which turns out to be expensive.
Instead, only keep one instance and reset it between runs.
The logstart/logreport/logfinish hooks don't need the stuff in
_runtest_for. The test capturing catching_logs call is irrelevant for
them, and the item-conditional sections are gone.
- Instead of making it optional, always set up a handler, but possibly
going to /dev/null. This simplifies the code by removing a lot of
conditionals. It also can replace the NullHandler() we already add.
- Change `set_log_path` to just change the stream, instead of recreating
one. Besides plugging a resource leak, it enables the next item.
- Remove the capturing_logs from _runtest_for, since it sufficiently
covered by the one in pytest_runtestloop now, which wraps all other
_runtest_for calls.
The first item alone would have had an adverse performance impact, but
the last item removes it.
Remove usage of `@contextmanager` as it is a bit slower than
hand-rolling, and also disallows re-entry which we want to use.
Removing protections around addHandler()/removeHandler(), because
logging already checks that internally.
Conceptually it doesn't check per catching_logs (and catching_logs
doesn't restore the older one either). It is just something that is
defined for each handler once.
* Update setup.py requires and classifiers
* Drop Python 2.7 and 3.4 from CI
* Update docs dropping 2.7 and 3.4 support
* Fix mock imports and remove tests related to pypi's mock module
* Add py27 and 34 support docs to the sidebar
* Remove usage of six from tmpdir
* Remove six.PY* code blocks
* Remove sys.version_info related code
* Cleanup compat
* Remove obsolete safe_str
* Remove obsolete __unicode__ methods
* Remove compat.PY35 and compat.PY36: not really needed anymore
* Remove unused UNICODE_TYPES
* Remove Jython specific code
* Remove some Python 2 references from docs
Related to #5275
A method _create_formatter was introduced that is used for both the
log_cli_formatter and the log_formatter.
Consequences of this commit are:
* Captured logs that are output for each failing test are formatted
using the ColoredLevelFromatter.
* The formatter used for writing to a file still uses the non-colored
logging.Formatter class.
We improve the following things in the logging format:
* Show module name instead of just the filename
* show level of logging as the first thing
* show lineno attached to module:file details
Thanks to @blueyed who suggested this on the github issue.
It's my first contribution and I have added myself to AUTHORS.
I also added to a changelog file.
While it should be closed in logging's shutdown [1], the following would
still issue a ResourceWarning:
```
import logging
log_file_handler = logging.FileHandler("temp.log", mode="w", encoding="UTF-8")
root_logger = logging.getLogger()
root_logger.addHandler(log_file_handler)
root_logger.removeHandler(log_file_handler)
root_logger.error("error")
del log_file_handler
```
It looks like the weakref might get lost for some reason.
See https://github.com/pytest-dev/pytest/pull/4981/commits/92ffe42b45 / #4981
for more information.
1: c1419578a1/Lib/logging/__init__.py (L2107-L2139)