Added handling of %f directive to print microseconds in log format options, such as log-date-format. It is impossible to do with a standard logging.Formatter because it uses time.strftime which doesn't know about milliseconds and %f. In this PR I added a custom Formatter which converts LogRecord to a datetime.datetime object and formats it with %f flag. This behaviour is enabled only if a microsecond flag is specified in a format string.
Also added a few tests to check the standard and changed behavior.
Closes#10991
Forces requested `caplog` logging levels to be enabled if they were disabled via `logging.disable()`
`[attr-defined]` mypy error ignored in `logging.py` because there were existing errors with the imports
and `loggin.Logger.manager` is an attr set at runtime. Since it's in the standard lib I can't really fix that.
Ignored an attr-defined error in `src/_pytest/config/__init__.py` because the re-export is necessary.
Fixes#8711
Setting log_level via the CLI or .ini will control the log level of the
report that is dumped upon failure of a test.
If caplog modified the log level during the execution of that test, it
should not impact the level that is displayed upon failure in the
"captured log report" section.
[
ran:
- rebased
- reused handler
- changed store keys also to "caplog_handler_*"
- added changelog
all bugs are mine :)
]
Currently, a bad logging call, e.g.
logger.info('oops', 'first', 2)
triggers the default logging handling, which is printing an error to
stderr but otherwise continuing.
For regular programs this behavior makes sense, a bad log message
shouldn't take down the program. But during tests, it is better not to
skip over such mistakes, but propagate them to the user.
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.
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.