
py.test 2.0.0: asserts++, unittest++, reporting++, config++, docs++
*******************************************************************

Welcome to pytest-2.0.0, a major new release of "py.test", the rapid
easy Python testing tool.  There are many new features and
enhancements, see below for summary and detailed lists.  A lot of
long-deprecated code has been removed, resulting in a much smaller and
cleaner implementation.  See the new docs with examples here:

   http://pytest.org/2.0.0/index.html

A note on packaging: pytest used to part of the "py" distribution up
until version py-1.3.4 but this has changed now:  pytest-2.0.0 only
contains py.test related code and is expected to be backward-
compatible to existing test code. If you want to install pytest, just
type one of:

   pip install -U pytest
   easy_install -U pytest

Many thanks to all issue reporters and people asking questions or
complaining.  Particular thanks to Floris Bruynooghe and Ronny
Pfannschmidt for their great coding contributions and many others for
feedback and help.

best, holger krekel


New Features
============

* new invocations through Python interpreter and from Python:

     python -m pytest      # on all pythons >= 2.5

  or from a python program:

     import pytest ; pytest.main(arglist, pluginlist)

  see http://pytest.org/2.0.0/usage.html for details.

* new and better reporting information in assert expressions if
  comparing lists, sequences or strings.

  see http://pytest.org/2.0.0/assert.html#newreport

* new configuration through ini-files (setup.cfg or tox.ini
  recognized), for example:

     [pytest]
     norecursedirs = .hg data*  # don't ever recurse in such dirs
     addopts = -x --pyargs      # add these command line options by default

  see http://pytest.org/2.0.0/customize.html

* improved standard unittest support.  In general py.test should now
  better be able to run custom unittest.TestCases like twisted trial
  or Django based TestCases.  Also you can now run the tests of an
  installed 'unittest' package with py.test:

     py.test --pyargs unittest

* new "-q" option which decreases verbosity and prints a more nose
  /unittest-style "dot" output.

* many many more detailed improvements details


Fixes
=====

* fix issue126 - introduce py.test.set_trace() to trace execution via
  PDB during the running of tests even if capturing is ongoing.

* fix issue124 - make reporting more resilient against tests opening
  files on filedescriptor 1 (stdout).

* fix issue109 - sibling conftest.py files will not be loaded. (and
  Directory collectors cannot be customized anymore from a Directory's
  conftest.py - this needs to happen at least one level up).

* fix issue88 (finding custom test nodes from command line arg)

* fix issue93 stdout/stderr is captured while importing conftest.py

* fix bug: unittest collected functions now also can have "pytestmark"
  applied at class/module level


Important Notes
===============

* The usual way in pre-2.0 times to use py.test in python code was to
  import "py" and then e.g. use "py.test.raises" for the helper. This
  remains valid and is not planned to be deprecated.  However, in most
  examples and internal code you'll find "import pytest" and
  "pytest.raises" used as the recommended default way.

* pytest now first performs collection of the complete test suite
  before running any test. This changes for example the semantics of
  when pytest_collectstart/pytest_collectreport are called.  Some
  plugins may need upgrading.

* The pytest package consists of a 400 LOC core.py and about 20
  builtin plugins, summing up to roughly 5000 LOCs, including
  docstrings. To be fair, it also uses generic code from the "pylib",
  and the new "py" package to help with filesystem and
  introspection/code manipulation.


(Incompatible) Removals
=======================

* py.test.config is now only available if you are in a test run.

* the following (mostly already deprecated) functionality was removed:

  * removed support for Module/Class/... collection node definitions
    in conftest.py files.  They will cause nothing special.

  * removed support for calling the pre-1.0 collection API of "run()"
    and "join"

  * removed reading option values from conftest.py files or env
    variables. This can now be done much much better and easier
    through the ini-file mechanism and the "addopts" entry in
    particular.

  * removed the "disabled" attribute in test classes.  Use the
    skipping and pytestmark mechanism to skip or xfail a test class.

* py.test.collect.Directory does not exist anymore and it is not
  possible to provide an own "Directory" object. If you have used this
  and don't know what to do, get in contact.  We'll figure something
  out.

  Note that pytest_collect_directory() is still called but any return
  value will be ignored.  This allows to keep old code working that
  performed for example "py.test.skip()" in collect() to prevent
  recursion into directory trees if a certain dependency or command
  line option is missing.

see *Changelog history* for more detailed changes.
