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Explicit path alias matching order for coverage combine #649

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nedbat opened this issue Mar 14, 2018 · 5 comments
Closed

Explicit path alias matching order for coverage combine #649

nedbat opened this issue Mar 14, 2018 · 5 comments
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combine enhancement New feature or request

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@nedbat
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nedbat commented Mar 14, 2018

Originally reported by Jonathan Beezley (Bitbucket: jbeezley, GitHub: jbeezley)


Over in https://github.com/girder/girder, we have a fairly convoluted use case where we need to use path aliases for our coverage combine step, but we also need ensure that the matching occurs in the correct order. To gloss over some of the messy details, the issue is that in a development install we have the following directory structure:

root/ ->
    girder/
        __init__.py
        ...
    plugins/
        __init__.py
        ...

But when installed, the package looks like this:

root/ ->
    girder/
        __init__.py
        ...
        plugins/
            __init__.py
            ...

We need to be able to combine coverage files executed from both of these environments,so we use a path alias that looks like this:

[coverage:paths]
plugins =
    plugins/
    build/test/tox/*/lib/*/site-packages/girder/plugins/
girder = 
    girder/
    build/test/tox/*/lib/*/site-packages/girder/

The issue here is that it matches the girder section first and aliases the plugin modules to $PWD/girder/plugins rather than $PWD/plugins.

Globbing patterns don't allow us to exclude only certain subdirectories from the second group, so we need to have some way to ensure that the it is matched after the first.

I would be willing to implement one of the following solutions. I would appreciate any guidance as to which approach (if any) would be preferred by the maintainers.

  1. Somehow allow explicit regex's in the path matching. I'm not sure how the syntax of this would work.
  2. Use an OrderedDict on this line so that the original order in the config file is preserved. This would be ideal, but it would require a backport of OrderedDict for python 2.6 support.
  3. Iterate through the keys in sorted order on this line. Users could then choose to name the alias targets so they apply in the required order. This is the simplest solution that I can think of, but it smells a little hacky to me.

@nedbat
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nedbat commented Sep 6, 2018

@jbeezley An OrderedDict sounds like a good approach. I've dropped Python 2.6 support since you wrote this up.

@nedbat
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nedbat commented Dec 1, 2019

I've fixed this in 65b9007. Thanks for the detailed example. It's now enshrined in my test suite!

@nedbat nedbat closed this as completed Dec 1, 2019
nedbat added a commit that referenced this issue Dec 1, 2019
@nedbat
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nedbat commented Dec 8, 2019

This was released as part of 5.0b2 today.

@nedbat
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nedbat commented Nov 30, 2022

This is now improved in commit 7e7c44b. The result of a remapping must exist, so now this scenario will find the correct file with the path aliases in either order.

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nedbat commented Dec 3, 2022

This is now released as part of coverage 7.0.0b1.

netbsd-srcmastr pushed a commit to NetBSD/pkgsrc that referenced this issue May 5, 2023
Version 7.2.5 — 2023-04-30
--------------------------

- Fix: ``html_report()`` could fail with an AttributeError on ``isatty`` if run
  in an unusual environment where sys.stdout had been replaced.  This is now
  fixed.


Version 7.2.4 — 2023-04-28
--------------------------

PyCon 2023 sprint fixes!

- Fix: with ``relative_files = true``, specifying a specific file to include or
  omit wouldn't work correctly (`issue 1604`_).  This is now fixed, with
  testing help by `Marc Gibbons <pull 1608_>`_.

- Fix: the XML report would have an incorrect ``<source>`` element when using
  relative files and the source option ended with a slash (`issue 1541`_).
  This is now fixed, thanks to `Kevin Brown-Silva <pull 1608_>`_.

- When the HTML report location is printed to the terminal, it's now a
  terminal-compatible URL, so that you can click the location to open the HTML
  file in your browser.  Finishes `issue 1523`_ thanks to `Ricardo Newbery
  <pull 1613_>`_.

- Docs: a new :ref:`Migrating page <migrating>` with details about how to
  migrate between major versions of coverage.py.  It currently covers the
  wildcard changes in 7.x.  Thanks, `Brian Grohe <pull 1610_>`_.

.. _issue 1523: nedbat/coveragepy#1523
.. _issue 1541: nedbat/coveragepy#1541
.. _issue 1604: nedbat/coveragepy#1604
.. _pull 1608: nedbat/coveragepy#1608
.. _pull 1609: nedbat/coveragepy#1609
.. _pull 1610: nedbat/coveragepy#1610
.. _pull 1613: nedbat/coveragepy#1613


Version 7.2.3 — 2023-04-06
--------------------------

- Fix: the :ref:`config_run_sigterm` setting was meant to capture data if a
  process was terminated with a SIGTERM signal, but it didn't always.  This was
  fixed thanks to `Lewis Gaul <pull 1600_>`_, closing `issue 1599`_.

- Performance: HTML reports with context information are now much more compact.
  File sizes are typically as small as one-third the previous size, but can be
  dramatically smaller. This closes `issue 1584`_ thanks to `Oleh Krehel
  <pull 1587_>`_.

- Development dependencies no longer use hashed pins, closing `issue 1592`_.

.. _issue 1584: nedbat/coveragepy#1584
.. _pull 1587: nedbat/coveragepy#1587
.. _issue 1592: nedbat/coveragepy#1592
.. _issue 1599: nedbat/coveragepy#1599
.. _pull 1600: nedbat/coveragepy#1600


Version 7.2.2 — 2023-03-16
--------------------------

- Fix: if a virtualenv was created inside a source directory, and a sourced
  package was installed inside the virtualenv, then all of the third-party
  packages inside the virtualenv would be measured.  This was incorrect, but
  has now been fixed: only the specified packages will be measured, thanks to
  `Manuel Jacob <pull 1560_>`_.

- Fix: the ``coverage lcov`` command could create a .lcov file with incorrect
  LF (lines found) and LH (lines hit) totals.  This is now fixed, thanks to
  `Ian Moore <pull 1583_>`_.

- Fix: the ``coverage xml`` command on Windows could create a .xml file with
  duplicate ``<package>`` elements. This is now fixed, thanks to `Benjamin
  Parzella <pull 1574_>`_, closing `issue 1573`_.

.. _pull 1560: nedbat/coveragepy#1560
.. _issue 1573: nedbat/coveragepy#1573
.. _pull 1574: nedbat/coveragepy#1574
.. _pull 1583: nedbat/coveragepy#1583


Version 7.2.1 — 2023-02-26
--------------------------

- Fix: the PyPI page had broken links to documentation pages, but no longer
  does, closing `issue 1566`_.

- Fix: public members of the coverage module are now properly indicated so that
  mypy will find them, fixing `issue 1564`_.

.. _issue 1564: nedbat/coveragepy#1564
.. _issue 1566: nedbat/coveragepy#1566


Version 7.2.0 — 2023-02-22
--------------------------

- Added a new setting ``[report] exclude_also`` to let you add more exclusions
  without overwriting the defaults.  Thanks, `Alpha Chen <pull 1557_>`_,
  closing `issue 1391`_.

- Added a :meth:`.CoverageData.purge_files` method to remove recorded data for
  a particular file.  Contributed by `Stephan Deibel <pull 1547_>`_.

- Fix: when reporting commands fail, they will no longer congratulate
  themselves with messages like "Wrote XML report to file.xml" before spewing a
  traceback about their failure.

- Fix: arguments in the public API that name file paths now accept pathlib.Path
  objects.  This includes the ``data_file`` and ``config_file`` arguments to
  the Coverage constructor and the ``basename`` argument to CoverageData.
  Closes `issue 1552`_.

- Fix: In some embedded environments, an IndexError could occur on stop() when
  the originating thread exits before completion.  This is now fixed, thanks to
  `Russell Keith-Magee <pull 1543_>`_, closing `issue 1542`_.

- Added a ``py.typed`` file to announce our type-hintedness.  Thanks,
  `KotlinIsland <pull 1550_>`_.

.. _issue 1391: nedbat/coveragepy#1391
.. _issue 1542: nedbat/coveragepy#1542
.. _pull 1543: nedbat/coveragepy#1543
.. _pull 1547: nedbat/coveragepy#1547
.. _pull 1550: nedbat/coveragepy#1550
.. _issue 1552: nedbat/coveragepy#1552
.. _pull 1557: nedbat/coveragepy#1557


Version 7.1.0 — 2023-01-24
--------------------------

- Added: the debug output file can now be specified with ``[run] debug_file``
  in the configuration file.  Closes `issue 1319`_.

- Performance: fixed a slowdown with dynamic contexts that's been around since
  6.4.3.  The fix closes `issue 1538`_.  Thankfully this doesn't break the
  `Cython change`_ that fixed `issue 972`_.  Thanks to Mathieu Kniewallner for
  the deep investigative work and comprehensive issue report.

- Typing: all product and test code has type annotations.

.. _Cython change: nedbat/coveragepy#1347
.. _issue 972: nedbat/coveragepy#972
.. _issue 1319: nedbat/coveragepy#1319
.. _issue 1538: nedbat/coveragepy#1538

Version 7.0.5 — 2023-01-10
--------------------------

- Fix: On Python 3.7, a file with type annotations but no ``from __future__
  import annotations`` would be missing statements in the coverage report. This
  is now fixed, closing `issue 1524`_.

.. _issue 1524: nedbat/coveragepy#1524


Version 7.0.4 — 2023-01-07
--------------------------

- Performance: an internal cache of file names was accidentally disabled,
  resulting in sometimes drastic reductions in performance.  This is now fixed,
  closing `issue 1527`_.   Thanks to Ivan Ciuvalschii for the reproducible test
  case.

.. _issue 1527: nedbat/coveragepy#1527


Version 7.0.3 — 2023-01-03
--------------------------

- Fix: when using pytest-cov or pytest-xdist, or perhaps both, the combining
  step could fail with ``assert row is not None`` using 7.0.2.  This was due to
  a race condition that has always been possible and is still possible. In
  7.0.1 and before, the error was silently swallowed by the combining code.
  Now it will produce a message "Couldn't combine data file" and ignore the
  data file as it used to do before 7.0.2.  Closes `issue 1522`_.

.. _issue 1522: nedbat/coveragepy#1522


Version 7.0.2 — 2023-01-02
--------------------------

- Fix: when using the ``[run] relative_files = True`` setting, a relative
  ``[paths]`` pattern was still being made absolute.  This is now fixed,
  closing `issue 1519`_.

- Fix: if Python doesn't provide tomllib, then TOML configuration files can
  only be read if coverage.py is installed with the ``[toml]`` extra.
  Coverage.py will raise an error if TOML support is not installed when it sees
  your settings are in a .toml file. But it didn't understand that
  ``[tools.coverage]`` was a valid section header, so the error wasn't reported
  if you used that header, and settings were silently ignored.  This is now
  fixed, closing `issue 1516`_.

- Fix: adjusted how decorators are traced on PyPy 7.3.10, fixing `issue 1515`_.

- Fix: the ``coverage lcov`` report did not properly implement the
  ``--fail-under=MIN`` option.  This has been fixed.

- Refactor: added many type annotations, including a number of refactorings.
  This should not affect outward behavior, but they were a bit invasive in some
  places, so keep your eyes peeled for oddities.

- Refactor: removed the vestigial and long untested support for Jython and
  IronPython.

.. _issue 1515: nedbat/coveragepy#1515
.. _issue 1516: nedbat/coveragepy#1516
.. _issue 1519: nedbat/coveragepy#1519


Version 7.0.1 — 2022-12-23
--------------------------

- When checking if a file mapping resolved to a file that exists, we weren't
  considering files in .whl files.  This is now fixed, closing `issue 1511`_.

- File pattern rules were too strict, forbidding plus signs and curly braces in
  directory and file names.  This is now fixed, closing `issue 1513`_.

- Unusual Unicode or control characters in source files could prevent
  reporting.  This is now fixed, closing `issue 1512`_.

- The PyPy wheel now installs on PyPy 3.7, 3.8, and 3.9, closing `issue 1510`_.

.. _issue 1510: nedbat/coveragepy#1510
.. _issue 1511: nedbat/coveragepy#1511
.. _issue 1512: nedbat/coveragepy#1512
.. _issue 1513: nedbat/coveragepy#1513


Version 7.0.0 — 2022-12-18
--------------------------

Nothing new beyond 7.0.0b1.


Version 7.0.0b1 — 2022-12-03
----------------------------

A number of changes have been made to file path handling, including pattern
matching and path remapping with the ``[paths]`` setting (see
:ref:`config_paths`).  These changes might affect you, and require you to
update your settings.

(This release includes the changes from `6.6.0b1 <changes_6-6-0b1_>`_, since
6.6.0 was never released.)

- Changes to file pattern matching, which might require updating your
  configuration:

  - Previously, ``*`` would incorrectly match directory separators, making
    precise matching difficult.  This is now fixed, closing `issue 1407`_.

  - Now ``**`` matches any number of nested directories, including none.

- Improvements to combining data files when using the
  :ref:`config_run_relative_files` setting, which might require updating your
  configuration:

  - During ``coverage combine``, relative file paths are implicitly combined
    without needing a ``[paths]`` configuration setting.  This also fixed
    `issue 991`_.

  - A ``[paths]`` setting like ``*/foo`` will now match ``foo/bar.py`` so that
    relative file paths can be combined more easily.

  - The :ref:`config_run_relative_files` setting is properly interpreted in
    more places, fixing `issue 1280`_.

- When remapping file paths with ``[paths]``, a path will be remapped only if
  the resulting path exists.  The documentation has long said the prefix had to
  exist, but it was never enforced.  This fixes `issue 608`_, improves `issue
  649`_, and closes `issue 757`_.

- Reporting operations now implicitly use the ``[paths]`` setting to remap file
  paths within a single data file.  Combining multiple files still requires the
  ``coverage combine`` step, but this simplifies some single-file situations.
  Closes `issue 1212`_ and `issue 713`_.

- The ``coverage report`` command now has a ``--format=`` option.  The original
  style is now ``--format=text``, and is the default.

  - Using ``--format=markdown`` will write the table in Markdown format, thanks
    to `Steve Oswald <pull 1479_>`_, closing `issue 1418`_.

  - Using ``--format=total`` will write a single total number to the
    output.  This can be useful for making badges or writing status updates.

- Combining data files with ``coverage combine`` now hashes the data files to
  skip files that add no new information.  This can reduce the time needed.
  Many details affect the speed-up, but for coverage.py's own test suite,
  combining is about 40% faster. Closes `issue 1483`_.

- When searching for completely un-executed files, coverage.py uses the
  presence of ``__init__.py`` files to determine which directories have source
  that could have been imported.  However, `implicit namespace packages`_ don't
  require ``__init__.py``.  A new setting ``[report]
  include_namespace_packages`` tells coverage.py to consider these directories
  during reporting.  Thanks to `Felix Horvat <pull 1387_>`_ for the
  contribution.  Closes `issue 1383`_ and `issue 1024`_.

- Fixed environment variable expansion in pyproject.toml files.  It was overly
  broad, causing errors outside of coverage.py settings, as described in `issue
  1481`_ and `issue 1345`_.  This is now fixed, but in rare cases will require
  changing your pyproject.toml to quote non-string values that use environment
  substitution.

- An empty file has a coverage total of 100%, but used to fail with
  ``--fail-under``.  This has been fixed, closing `issue 1470`_.

- The text report table no longer writes out two separator lines if there are
  no files listed in the table.  One is plenty.

- Fixed a mis-measurement of a strange use of wildcard alternatives in
  match/case statements, closing `issue 1421`_.

- Fixed internal logic that prevented coverage.py from running on
  implementations other than CPython or PyPy (`issue 1474`_).

- The deprecated ``[run] note`` setting has been completely removed.

.. _implicit namespace packages: https://peps.python.org/pep-0420/
.. _issue 608: nedbat/coveragepy#608
.. _issue 649: nedbat/coveragepy#649
.. _issue 713: nedbat/coveragepy#713
.. _issue 757: nedbat/coveragepy#757
.. _issue 991: nedbat/coveragepy#991
.. _issue 1024: nedbat/coveragepy#1024
.. _issue 1212: nedbat/coveragepy#1212
.. _issue 1280: nedbat/coveragepy#1280
.. _issue 1345: nedbat/coveragepy#1345
.. _issue 1383: nedbat/coveragepy#1383
.. _issue 1407: nedbat/coveragepy#1407
.. _issue 1418: nedbat/coveragepy#1418
.. _issue 1421: nedbat/coveragepy#1421
.. _issue 1470: nedbat/coveragepy#1470
.. _issue 1474: nedbat/coveragepy#1474
.. _issue 1481: nedbat/coveragepy#1481
.. _issue 1483: nedbat/coveragepy#1483
.. _pull 1387: nedbat/coveragepy#1387
.. _pull 1479: nedbat/coveragepy#1479



Version 6.6.0b1 — 2022-10-31
----------------------------

(Note: 6.6.0 final was never released. These changes are part of `7.0.0b1
<changes_7-0-0b1_>`_.)

- Changes to file pattern matching, which might require updating your
  configuration:

  - Previously, ``*`` would incorrectly match directory separators, making
    precise matching difficult.  This is now fixed, closing `issue 1407`_.

  - Now ``**`` matches any number of nested directories, including none.

- Improvements to combining data files when using the
  :ref:`config_run_relative_files` setting:

  - During ``coverage combine``, relative file paths are implicitly combined
    without needing a ``[paths]`` configuration setting.  This also fixed
    `issue 991`_.

  - A ``[paths]`` setting like ``*/foo`` will now match ``foo/bar.py`` so that
    relative file paths can be combined more easily.

  - The setting is properly interpreted in more places, fixing `issue 1280`_.

- Fixed environment variable expansion in pyproject.toml files.  It was overly
  broad, causing errors outside of coverage.py settings, as described in `issue
  1481`_ and `issue 1345`_.  This is now fixed, but in rare cases will require
  changing your pyproject.toml to quote non-string values that use environment
  substitution.

- Fixed internal logic that prevented coverage.py from running on
  implementations other than CPython or PyPy (`issue 1474`_).

.. _issue 991: nedbat/coveragepy#991
.. _issue 1280: nedbat/coveragepy#1280
.. _issue 1345: nedbat/coveragepy#1345
.. _issue 1407: nedbat/coveragepy#1407
.. _issue 1474: nedbat/coveragepy#1474
.. _issue 1481: nedbat/coveragepy#1481
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