Use testr to run nova unittests.

Convert nova from using nosetests to testr for its test runner. Some
tests had to be modified to get them to run properly under testr.

run_tests.sh has been updated to run testr instead of nosetests.

Coverage is collected by running subunit.run under coverage.py when the
coverage environment is selected.

Note that you will need to rebuild your virtualenvs as nose is being
removed from the dependency lists and is being replaced by testr. Tests
will run in different processes once this test is merged so you cannot
use test classes to pass information between tests. Each test should be
a proper independent unit. Additionally the -x and -d flags to
run_tests.sh have been removed as there are currently no decent
approximations for those functions.

Change-Id: I019ca098972ca749b195f59968cf21edd5ba9109

1 files changed, 11 insertions, 8 deletions

diff --git a/tox.ini b/tox.ini
index 586013081d..4fa567518b 100644
--- a/tox.ini
+++ b/tox.ini
@@ -3,19 +3,16 @@ envlist = py26,py27,pep8
 
 [testenv]
 setenv = VIRTUAL_ENV={envdir}
-         NOSE_WITH_OPENSTACK=1
-         NOSE_OPENSTACK_COLOR=1
-         NOSE_OPENSTACK_RED=0.05
-         NOSE_OPENSTACK_YELLOW=0.025
-         NOSE_OPENSTACK_SHOW_ELAPSED=1
-         NOSE_OPENSTACK_STDOUT=1
          LANG=en_US.UTF-8
          LANGUAGE=en_US:en
          LC_ALL=C
+         OS_STDOUT_NOCAPTURE=False
+         OS_STDERR_NOCAPTURE=False
 
 deps = -r{toxinidir}/tools/pip-requires
        -r{toxinidir}/tools/test-requires
-commands = nosetests {posargs}
+commands = bash -c 'if [ ! -d ./.testrepository ] ; then testr init ; fi'
+           bash -c 'testr run --parallel {posargs} ; RET=$? ; echo "Slowest Tests" ; testr slowest && exit $RET'
 
 [tox:jenkins]
 sitepackages = True
@@ -40,7 +37,13 @@ deps = pyflakes
 commands = python tools/flakes.py nova
 
 [testenv:cover]
-setenv = NOSE_WITH_COVERAGE=1
+# Need to omit DynamicallyCompiledCheetahTemplate.py from coverage because
+# it ceases to exist post test run. Also do not run test_coverage_ext tests
+# while gathering coverage as those tests conflict with coverage.
+setenv = OMIT=--omit=DynamicallyCompiledCheetahTemplate.py
+         PYTHON=coverage run --source nova --parallel-mode
+commands = bash -c 'if [ ! -d ./.testrepository ] ; then testr init ; fi'
+           bash -c 'testr run --parallel \^\(\?\!\.\*test_coverage_ext\)\.\*\$ ; RET=$? ; coverage combine ; coverage html -d ./cover $OMIT && exit $RET'
 
 [testenv:venv]
 commands = {posargs}