Switch to using stestr

When the TC merged I2637dd714cbb6d38ef8b8dc1083e359207118284 we're
supposed to invoke stestr rather than testr so lets do that

Change-Id: Iba54c6540644d3d4942686b9f1c33fce6d19d431

.gitignore

@@ -28,6 +28,7 @@ cover/
 .tox
 nosetests.xml
 .testrepository
+.stestr/
 .venv
 
 # Translations

.stestr.conf

@@ -0,0 +1,3 @@
+[DEFAULT]
+test_path=./oslotest/tests/unit
+top_path=./

.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

lower-constraints.txt

@@ -39,6 +39,7 @@ six==1.10.0
 snowballstemmer==1.2.1
 Sphinx==1.6.5
 sphinxcontrib-websupport==1.0.1
+stestr==2.0.0
 stevedore==1.20.0
 testrepository==0.0.18
 testtools==2.2.0

requirements.txt

@@ -5,7 +5,7 @@
 fixtures>=3.0.0 # Apache-2.0/BSD
 python-subunit>=1.0.0 # Apache-2.0/BSD
 six>=1.10.0 # MIT
-testrepository>=0.0.18 # Apache-2.0/BSD
+stestr>=2.0.0 # Apache-2.0
 testtools>=2.2.0 # MIT
 mock>=2.0.0 # BSD
 mox3>=0.20.0 # Apache-2.0

test-requirements.txt

@@ -13,5 +13,5 @@ coverage!=4.4,>=4.0 # Apache-2.0
 sphinx!=1.6.6,!=1.6.7,>=1.6.5 # BSD
 openstackdocstheme>=1.18.1 # Apache-2.0
 oslo.config>=5.2.0 # Apache-2.0
-
+stestr==2.0.0
 reno>=2.5.0 # Apache-2.0

tox.ini

@@ -9,7 +9,7 @@ deps =
   -c{env:UPPER_CONSTRAINTS_FILE:https://git.openstack.org/cgit/openstack/requirements/plain/upper-constraints.txt}
   -r{toxinidir}/test-requirements.txt
   -r{toxinidir}/requirements.txt
-commands = python setup.py testr --slowest --testr-args='{posargs}'
+commands = stestr run --slowest {posargs}
 
 [testenv:py27]
 basepython = python2.7
@@ -20,8 +20,13 @@ commands = flake8
 
 [testenv:cover]
 basepython = python3
+setenv =
+    PYTHON=coverage run --source $project --parallel-mode
 commands =
-  python setup.py test --coverage --testr-args='{posargs}'
+    stestr run '{posargs}'
+    coverage combine
+    coverage html -d cover
+    coverage xml -o cover/coverage.xml
 
 [testenv:venv]
 basepython = python3