Version 4.2
------------
- Since concurrency=multiprocessing uses subprocesses, options specified
on the coverage.py command line will not be communicated down to them.
Only options in the configuration file will apply to the subprocesses.
Previously, the options didn't apply to the subprocesses, but there
was no indication. Now it is an error to use
--concurrency=multiprocessing and other run-affecting options on the
command line. This prevents failures like those reported in issue 495.
- Filtering the HTML report is now faster, thanks to Ville Skyttä.
Version 4.2b1
-------------
Work from the PyCon 2016 Sprints!
- BACKWARD INCOMPATIBILITY: the coverage combine command now ignores an
existing .coverage data file. It used to include that file in its
combining. This caused confusing results, and extra tox "clean" steps.
If you want the old behavior, use the new coverage combine --append
option.
- The concurrency option can now take multiple values, to support
programs using multiprocessing and another library such as eventlet.
This is only possible in the configuration file, not from the command
line. The configuration file is the only way for sub-processes to all
run with the same options.
- Using a concurrency setting of multiprocessing now implies --parallel
so that the main program is measured similarly to the sub-processes.
- When using automatic subprocess measurement, running coverage commands
would create spurious data files. This is now fixed.
- A new configuration option, report:sort, controls what column of the
text report is used to sort the rows.
- The HTML report has a more-visible indicator for which column is being
sorted.
- If the HTML report cannot find the source for a file, the message now
suggests using the -i flag to allow the report to continue.
- When reports are ignoring errors, there's now a warning if a file
cannot be parsed, rather than being silently ignored.
- A new option for coverage debug is available: coverage debug config
shows the current configuration.
- Running coverage as a module (python -m coverage) no longer shows the
program name as __main__.py.
- The test_helpers module has been moved into a separate pip-installable
package: unittest-mixins.
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