Update coverage to 6.0

[pyup-bot]

This PR updates coverage from 5.0.3 to 6.0.

Changelog

6.0

--------------------------

- The ``coverage html`` command now prints a message indicating where the HTML
report was written.  Fixes `issue 1195`_.

- The ``coverage combine`` command now prints messages indicating each data
file being combined.  Fixes `issue 1105`_.

- The HTML report now includes a sentence about skipped files due to
``skip_covered`` or ``skip_empty`` settings.  Fixes `issue 1163`_.

- Unrecognized options in the configuration file are no longer errors. They are
now warnings, to ease the use of coverage across versions.  Fixes `issue
1035`_.

- Fix handling of exceptions through context managers in Python 3.10. A missing
exception is no longer considered a missing branch from the with statement.
Fixes `issue 1205`_.

- Fix another rarer instance of "Error binding parameter 0 - probably
unsupported type." (`issue 1010`_).

- Creating a directory for the coverage data file now is safer against
conflicts when two coverage runs happen simultaneously (`pull 1220`_).
Thanks, Clément Pit-Claudel.

.. _issue 1035: https://github.com/nedbat/coveragepy/issues/1035
.. _issue 1105: https://github.com/nedbat/coveragepy/issues/1105
.. _issue 1163: https://github.com/nedbat/coveragepy/issues/1163
.. _issue 1195: https://github.com/nedbat/coveragepy/issues/1195
.. _issue 1205: https://github.com/nedbat/coveragepy/issues/1205
.. _pull 1220: https://github.com/nedbat/coveragepy/pull/1220


.. _changes_60b1:

6.0b1

----------------------------

- Dropped support for Python 2.7, PyPy 2, and Python 3.5.

- Added support for the Python 3.10 ``match/case`` syntax.

- Data collection is now thread-safe.  There may have been rare instances of
exceptions raised in multi-threaded programs.

- Plugins (like the `Django coverage plugin`_) were generating "Already
imported a file that will be measured" warnings about Django itself.  These
have been fixed, closing `issue 1150`_.

- Warnings generated by coverage.py are now real Python warnings.

- Using ``--fail-under=100`` with coverage near 100% could result in the
self-contradictory message :code:`total of 100 is less than fail-under=100`.
This bug (`issue 1168`_) is now fixed.

- The ``COVERAGE_DEBUG_FILE`` environment variable now accepts ``stdout`` and
``stderr`` to write to those destinations.

- TOML parsing now uses the `tomli`_ library.

- Some minor changes to usually invisible details of the HTML report:

- Use a modern hash algorithm when fingerprinting, for high-security
 environments (`issue 1189`_).  When generating the HTML report, we save the
 hash of the data, to avoid regenerating an unchanged HTML page. We used to
 use MD5 to generate the hash, and now use SHA-3-256.  This was never a
 security concern, but security scanners would notice the MD5 algorithm and
 raise a false alarm.

- Change how report file names are generated, to avoid leading underscores
 (`issue 1167`_), to avoid rare file name collisions (`issue 584`_), and to
 avoid file names becoming too long (`issue 580`_).

.. _Django coverage plugin: https://pypi.org/project/django-coverage-plugin/
.. _issue 580: https://github.com/nedbat/coveragepy/issues/580
.. _issue 584: https://github.com/nedbat/coveragepy/issues/584
.. _issue 1150: https://github.com/nedbat/coveragepy/issues/1150
.. _issue 1167: https://github.com/nedbat/coveragepy/issues/1167
.. _issue 1168: https://github.com/nedbat/coveragepy/issues/1168
.. _issue 1189: https://github.com/nedbat/coveragepy/issues/1189
.. _tomli: https://pypi.org/project/tomli/


.. _changes_56b1:

5.6b1

----------------------------

Note: 5.6 final was never released. These changes are part of 6.0.

- Third-party packages are now ignored in coverage reporting.  This solves a
few problems:

- Coverage will no longer report about other people's code (`issue 876`_).
 This is true even when using ``--source=.`` with a venv in the current
 directory.

- Coverage will no longer generate "Already imported a file that will be
 measured" warnings about coverage itself (`issue 905`_).

- The HTML report uses j/k to move up and down among the highlighted chunks of
code.  They used to highlight the current chunk, but 5.0 broke that behavior.
Now the highlighting is working again.

- The JSON report now includes ``percent_covered_display``, a string with the
total percentage, rounded to the same number of decimal places as the other
reports' totals.

.. _issue 876: https://github.com/nedbat/coveragepy/issues/876
.. _issue 905: https://github.com/nedbat/coveragepy/issues/905


.. _changes_55:

5.5

--------------------------

- ``coverage combine`` has a new option, ``--keep`` to keep the original data
files after combining them.  The default is still to delete the files after
they have been combined.  This was requested in `issue 1108`_ and implemented
in `pull request 1110`_.  Thanks, Éric Larivière.

- When reporting missing branches in ``coverage report``, branches aren't
reported that jump to missing lines.  This adds to the long-standing behavior
of not reporting branches from missing lines.  Now branches are only reported
if both the source and destination lines are executed.  Closes both `issue
1065`_ and `issue 955`_.

- Minor improvements to the HTML report:

- The state of the line visibility selector buttons is saved in local storage
 so you don't have to fiddle with them so often, fixing `issue 1123`_.

- It has a little more room for line numbers so that 4-digit numbers work
 well, fixing `issue 1124`_.

- Improved the error message when combining line and branch data, so that users
will be more likely to understand what's happening, closing `issue 803`_.

.. _issue 803: https://github.com/nedbat/coveragepy/issues/803
.. _issue 955: https://github.com/nedbat/coveragepy/issues/955
.. _issue 1065: https://github.com/nedbat/coveragepy/issues/1065
.. _issue 1108: https://github.com/nedbat/coveragepy/issues/1108
.. _pull request 1110: https://github.com/nedbat/coveragepy/pull/1110
.. _issue 1123: https://github.com/nedbat/coveragepy/issues/1123
.. _issue 1124: https://github.com/nedbat/coveragepy/issues/1124


.. _changes_54:

5.4

--------------------------

- The text report produced by ``coverage report`` now always outputs a TOTAL
line, even if only one Python file is reported.  This makes regex parsing
of the output easier.  Thanks, Judson Neer.  This had been requested a number
of times (`issue 1086`_, `issue 922`_, `issue 732`_).

- The ``skip_covered`` and ``skip_empty`` settings in the configuration file
can now be specified in the ``[html]`` section, so that text reports and HTML
reports can use separate settings.  The HTML report will still use the
``[report]`` settings if there isn't a value in the ``[html]`` section.
Closes `issue 1090`_.

- Combining files on Windows across drives now works properly, fixing `issue
577`_.  Thanks, `Valentin Lab <pr1080_>`_.

- Fix an obscure warning from deep in the _decimal module, as reported in
`issue 1084`_.

- Update to support Python 3.10 alphas in progress, including `PEP 626: Precise
line numbers for debugging and other tools <pep626_>`_.

.. _issue 577: https://github.com/nedbat/coveragepy/issues/577
.. _issue 732: https://github.com/nedbat/coveragepy/issues/732
.. _issue 922: https://github.com/nedbat/coveragepy/issues/922
.. _issue 1084: https://github.com/nedbat/coveragepy/issues/1084
.. _issue 1086: https://github.com/nedbat/coveragepy/issues/1086
.. _issue 1090: https://github.com/nedbat/coveragepy/issues/1090
.. _pr1080: https://github.com/nedbat/coveragepy/pull/1080
.. _pep626: https://www.python.org/dev/peps/pep-0626/


.. _changes_531:

5.3.1

----------------------------

- When using ``--source`` on a large source tree, v5.x was slower than previous
versions.  This performance regression is now fixed, closing `issue 1037`_.

- Mysterious SQLite errors can happen on PyPy, as reported in `issue 1010`_. An
immediate retry seems to fix the problem, although it is an unsatisfying
solution.

- The HTML report now saves the sort order in a more widely supported way,
fixing `issue 986`_.  Thanks, Sebastián Ramírez (`pull request 1066`_).

- The HTML report pages now have a :ref:`Sleepy Snake <sleepy>` favicon.

- Wheels are now provided for manylinux2010, and for PyPy3 (pp36 and pp37).

- Continuous integration has moved from Travis and AppVeyor to GitHub Actions.

.. _issue 986: https://github.com/nedbat/coveragepy/issues/986
.. _issue 1037: https://github.com/nedbat/coveragepy/issues/1037
.. _issue 1010: https://github.com/nedbat/coveragepy/issues/1010
.. _pull request 1066: https://github.com/nedbat/coveragepy/pull/1066

.. _changes_53:

5.3

--------------------------

- The ``source`` setting has always been interpreted as either a file path or a
module, depending on which existed.  If both interpretations were valid, it
was assumed to be a file path.  The new ``source_pkgs`` setting can be used
to name a package to disambiguate this case.  Thanks, Thomas Grainger. Fixes
`issue 268`_.

- If a plugin was disabled due to an exception, we used to still try to record
its information, causing an exception, as reported in `issue 1011`_.  This is
now fixed.

.. _issue 268: https://github.com/nedbat/coveragepy/issues/268
.. _issue 1011: https://github.com/nedbat/coveragepy/issues/1011


.. _changes_521:

5.2.1

----------------------------

- The dark mode HTML report still used light colors for the context listing,
making them unreadable (`issue 1009`_).  This is now fixed.

- The time stamp on the HTML report now includes the time zone. Thanks, Xie
Yanbo (`pull request 960`_).

.. _pull request 960: https://github.com/nedbat/coveragepy/pull/960
.. _issue 1009: https://github.com/nedbat/coveragepy/issues/1009


.. _changes_52:

5.2

--------------------------

- The HTML report has been redesigned by Vince Salvino.  There is now a dark
mode, the code text is larger, and system sans serif fonts are used, in
addition to other small changes (`issue 858`_ and `pull request 931`_).

- The ``coverage report`` and ``coverage html`` commands now accept a
``--precision`` option to control the number of decimal points displayed.
Thanks, Teake Nutma (`pull request 982`_).

- The ``coverage report`` and ``coverage html`` commands now accept a
``--no-skip-covered`` option to negate ``--skip-covered``.  Thanks, Anthony
Sottile (`issue 779`_ and `pull request 932`_).

- The ``--skip-empty`` option is now available for the XML report, closing
`issue 976`_.

- The ``coverage report`` command now accepts a ``--sort`` option to specify
how to sort the results.  Thanks, Jerin Peter George (`pull request 1005`_).

- If coverage fails due to the coverage total not reaching the ``--fail-under``
value, it will now print a message making the condition clear.  Thanks,
Naveen Yadav (`pull request 977`_).

- TOML configuration files with non-ASCII characters would cause errors on
Windows (`issue 990`_).  This is now fixed.

- The output of ``--debug=trace`` now includes information about how the
``--source`` option is being interpreted, and the module names being
considered.

.. _pull request 931: https://github.com/nedbat/coveragepy/pull/931
.. _pull request 932: https://github.com/nedbat/coveragepy/pull/932
.. _pull request 977: https://github.com/nedbat/coveragepy/pull/977
.. _pull request 982: https://github.com/nedbat/coveragepy/pull/982
.. _pull request 1005: https://github.com/nedbat/coveragepy/pull/1005
.. _issue 779: https://github.com/nedbat/coveragepy/issues/779
.. _issue 858: https://github.com/nedbat/coveragepy/issues/858
.. _issue 976: https://github.com/nedbat/coveragepy/issues/976
.. _issue 990: https://github.com/nedbat/coveragepy/issues/990


.. _changes_51:

5.1

--------------------------

- The JSON report now includes counts of covered and missing branches. Thanks,
Salvatore Zagaria.

- On Python 3.8, try-finally-return reported wrong branch coverage with
decorated async functions (`issue 964`_).  This is now fixed. Thanks, Kjell
Braden.

- The :meth:`~coverage.Coverage.get_option` and
:meth:`~coverage.Coverage.set_option` methods can now manipulate the
``[paths]`` configuration setting.  Thanks to Bernát Gábor for the fix for
`issue 967`_.

.. _issue 964: https://github.com/nedbat/coveragepy/issues/964
.. _issue 967: https://github.com/nedbat/coveragepy/issues/967


.. _changes_504:

5.0.4

----------------------------

- If using the ``[run] relative_files`` setting, the XML report will use
relative files in the ``<source>`` elements indicating the location of source
code.  Closes `issue 948`_.

- The textual summary report could report missing lines with negative line
numbers on PyPy3 7.1 (`issue 943`_).  This is now fixed.

- Windows wheels for Python 3.8 were incorrectly built, but are now fixed.
(`issue 949`_)

- Updated Python 3.9 support to 3.9a4.

- HTML reports couldn't be sorted if localStorage wasn't available. This is now
fixed: sorting works even though the sorting setting isn't retained. (`issue
944`_ and `pull request 945`_). Thanks, Abdeali Kothari.

.. _issue 943: https://github.com/nedbat/coveragepy/issues/943
.. _issue 944: https://github.com/nedbat/coveragepy/issues/944
.. _pull request 945: https://github.com/nedbat/coveragepy/pull/945
.. _issue 948: https://github.com/nedbat/coveragepy/issues/948
.. _issue 949: https://github.com/nedbat/coveragepy/issues/949


.. _changes_503:

Links

• PyPI: https://pypi.org/project/coverage
• Changelog: https://pyup.io/changelogs/coverage/
• Repo: https://github.com/nedbat/coveragepy

[pyup-bot]

Closing this in favor of #657