* Add failing test for issue #4507.
* Add looks_like_hash() with tests.
* Add news file.
* Address issue #4507 by using looks_like_hash().
* Tweak warning text.
* Fix test after rebasing.
* Remove extra line.
* Add the RevOptions class, and test.
* Start using the RevOptions class.
* Add news file.
* Update for mypy.
* Fix test after rebasing.
* Address @xavfernandez's review comments.
This saves a network hop when using git and passing an explicit sha
as a ref by comparing the version that's already checked out.
Yields a ~4x speedup on my local machine
Before:
```
$ /usr/local/bin/pip --version
pip 7.1.0 from /usr/local/lib/python2.7/site-packages (python 2.7)
$ time /usr/local/bin/pip install --disable-pip-version-check -e git+https://github.com/getsentry/raven-python.git@56fc6f7beecf445843d0ec7052bb8c6f0ea80a2e#egg=raven_dev
Obtaining raven-dev from git+https://github.com/getsentry/raven-python.git@56fc6f7beecf445843d0ec7052bb8c6f0ea80a2e#egg=raven_dev
Updating ./src/raven-dev clone (to 56fc6f7beecf445843d0ec7052bb8c6f0ea80a2e)
Could not find a tag or branch '56fc6f7beecf445843d0ec7052bb8c6f0ea80a2e', assuming commit.
Installing collected packages: raven-dev
Running setup.py develop for raven-dev
Successfully installed raven-dev
/usr/local/bin/pip install --disable-pip-version-check -e 0.84s user 0.48s system 39% cpu 3.300 total
```
After:
```
$ /Users/matt/.virtualenvs/pip/bin/pip --version
pip 7.2.0.dev0 from /Users/matt/code/pip (python 2.7)
$ time /Users/matt/.virtualenvs/pip/bin/pip install --disable-pip-version-check -e git+https://github.com/getsentry/raven-python.git@56fc6f7beecf445843d0ec7052bb8c6f0ea80a2e#egg=raven_dev
Obtaining raven-dev from git+https://github.com/getsentry/raven-python.git@56fc6f7beecf445843d0ec7052bb8c6f0ea80a2e#egg=raven_dev
checking version
Skipping because already up-to-date.
Installing collected packages: raven-dev
Running setup.py develop for raven-dev
Successfully installed raven-dev
/Users/matt/.virtualenvs/pip/bin/pip install --disable-pip-version-check -e 0.59s user 0.22s system 98% cpu 0.824 total
```
* Move virtualenv creation out of TestPipEnvironment
* Remove global state and force explicit use of TestPipEnvironment
instances
* Remove "backup" virtualenv copying and instead create new
virtual environments each time.
* Remove the monkeypatched "PyPICache" functionality
* Remove things that were not being used anymore and were dead
weight
* Remove sitecustomize support which was primarily used to
monkeypatch the "PyPICache" but was used in one or two other
tests.
* Better output with the bare asserts we use throughout the tests
* Function fixtures are pretty nice, especially as a way to
start a background server or create an isolated virtualenv
* develop:
add back in old tox.ini
add back test lost in the restructure
more functional/unit tests restructure
break up tests dir into data, unit tests, and functional tests
