Running through some of my tests with the `-3` flag in python2.7 I encountered some errors within py.test itself. This fixes those errors so we can use py.test in order to identify problems with Python 3.
The assertion reinterpretation is an old backwards compatibility
mode which was no longer being maintained on feature-parity with
the assertion rewriting mode. It was also responsible for some
dubious patching of builtins and test with side-effects would
suddenly start passing. Since re-writing has been the default for
a long time and plugins are now also re-written it is time to
retire reinterpretation.
Hook up the PEP 302 import hook very early in pytest startup so
that it gets installed before setuptools-installed plugins are
imported. Also iterate over all installed plugins and mark them
for rewriting. If an installed plugin is already imported then
a warning is issued, we can not break since that might break
existing plugins and the fallback will still be gracefull to
plain asserts.
Some existing tests are failing in this commit because of the new
warning triggered by inline pytest runs due to the hypothesis
plugin already being imported. The tests will be fixed in the next
commit.
When you don't get enough information with a test running on a CI, it's quite
frustrating, for various reasons:
- It's more likely to be a flaky test, so you might not be able to reproduce
the failure.
- Passing -vv is quite bothersome (creating a temporary commit and reverting
it)
For those reasons, if something goes wrong on CI, it's good to have as much
information as possible.
Sometimes the repr of an object can contain the "\n{" sequence which is
used as a formatting language, so they are escaped to "\\n{". But the
collapse-false code needs to look for the real "\n{" token instead of
simply "{" as otherwise it may get unbalanced braces from the object's
repr (sometimes caused by the collapsing of long reprs by saferepr).
Fixes issue #731.
--HG--
branch : pytest-2.7
Bruno Oliveira
Roy Williams
Floris Bruynooghe
Ronny Pfannschmidt
RedBeardCode
Vasily Kuznetsov
Tom Viner
Marcin Biernat
Florian Bruhin
Ronny Pfannschmidt
Thomas Kluyver
Matthias Bussonnier
holger krekel
Edison Gustavo Muenz
Benjamin Peterson