Switch to use stestr for unit test

According to Openstack summit session [1],
stestr is maintained project to which all Openstack projects should migrate.
So we should switch to stestr.

[1] https://etherpad.openstack.org/p/YVR-python-pti

Change-Id: Ibad09169024dc7b8ee967432c18669094d9ed31e

.gitignore

@@ -26,7 +26,7 @@ pip-log.txt
 .coverage
 .tox
 nosetests.xml
-.testrepository
+.stestr/
 .venv
 node_modules
 cover*

.stestr.conf

@@ -0,0 +1,3 @@
+[DEFAULT]
+test_path=./searchlight_ui/tests
+top_dir=.

.testr.conf

@@ -1,7 +0,0 @@
-[DEFAULT]
-test_command=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 ./ . $LISTOPT $IDOPTION
-test_id_option=--load-list $IDFILE
-test_list_option=--list

test-requirements.txt

@@ -13,7 +13,7 @@ sphinx>=1.6.2 # BSD
 openstackdocstheme>=1.11.0 # Apache-2.0
 reno>=1.8.0 # Apache-2.0
 oslotest>=1.10.0 # Apache-2.0
-testrepository>=0.0.18 # Apache-2.0/BSD
+stestr>=2.0.0 # Apache-2.0
 testscenarios>=0.4 # Apache-2.0/BSD
 testtools>=1.4.0 # MIT
 # This also needs xvfb library installed on your OS

tox.ini

@@ -37,7 +37,14 @@ setenv =
 commands = nosetests searchlight_ui/tests/integration_tests/tests {posargs}
 
 [testenv:cover]
-commands = python setup.py test --coverage --testr-args='{posargs}'
+setenv =
+   {[testenv]setenv}
+   PYTHON=coverage run --source searchlight_ui --parallel-mode
+commands =
+   stestr run {posargs}
+   coverage combine
+   coverage html -d cover
+   coverage xml -o cover/coverage.xml
 
 [testenv:docs]
 deps = -r{toxinidir}/doc/requirements.txt