From ff70d109032c2f04cc3a0c12db4d6efa4311ed2a Mon Sep 17 00:00:00 2001
From: Peter Stachowski <peter@tesora.com>
Date: Mon, 4 Apr 2016 18:09:37 +0000
Subject: [PATCH] Remove times.dbm file for each tox run

If you run the py27 tox tests then attempt to run the py34 tests,
the following error will occur:

    running testr
    running=OS_STDOUT_CAPTURE=${OS_STDOUT_CAPTURE:-1} \
    OS_STDERR_CAPTURE=${OS_STDERR_CAPTURE:-1} \
    OS_TEST_TIMEOUT=${OS_TEST_TIMEOUT:-60} \
    ${PYTHON:-python} -m subunit.run discover -t ./ ./ --list
    db type could not be determined
    error: testr failed (3)

This happens because the apparently the times.dbm file generated
by py27 is not compatible with py34. The converse is not true though -
if you run py34 first, py27 will work.

Both these bugs have been filed against it, but I see no resolution
https://bugs.launchpad.net/testrepository/+bug/1212909
https://bugs.launchpad.net/testrepository/+bug/1229445

The work-around is to delete the file, which is what is now done
before running every tox test. Once the bug has been fixed, the
work-around can be removed.

Change-Id: Icf5d9efc65ffda8acdcc6f43b37ef03c84b3fd43
Closes-Bug: #1565928
---
 tox.ini | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/tox.ini b/tox.ini
index ef0c39a6..a3de8860 100644
--- a/tox.ini
+++ b/tox.ini
@@ -17,8 +17,10 @@ install_command = pip install -U {opts} {packages}
 deps = -r{toxinidir}/requirements.txt
        -r{toxinidir}/test-requirements.txt
 commands = find . -type f -name "*.pyc" -delete
+           rm -f .testrepository/times.dbm
            python setup.py testr --testr-args='{posargs}'
 whitelist_externals = find
+                      rm
 
 [testenv:debug]
 commands = oslo_debug_helper -t troveclient/tests {posargs}