Switch to stestr

stestr is maintained project to which all Openstack projects
should use.

Change-Id: I18a83ef1909e758e82f7e9d888d65363a4528249
(cherry picked from commit 90cf6a6dbe)

.gitignore

@@ -38,6 +38,7 @@ cover
 .coverage
 .tox
 .testrepository
+.stestr/*
 nosetests.xml
 
 # Translations

.stestr.conf

@@ -0,0 +1,3 @@
+[DEFAULT]
+test_path=${TEST_PATH:-./tripleo_heat_templates/tests}
+top_dir=./

.testr.conf

@@ -1,4 +0,0 @@
-[DEFAULT]
-test_command=OS_STDOUT_CAPTURE=1 OS_STDERR_CAPTURE=1 OS_TEST_TIMEOUT=60 OS_LOG_CAPTURE=1 ${PYTHON:-python} -m subunit.run discover -t ./ $LISTOPT $IDOPTION
-test_id_option=--load-list $IDFILE
-test_list_option=--list

test-requirements.txt

@@ -11,6 +11,7 @@ python-subunit>=1.0.0 # Apache-2.0/BSD
 testrepository>=0.0.18 # Apache-2.0/BSD
 testscenarios>=0.4 # Apache-2.0/BSD
 testtools>=2.2.0 # MIT
+stestr>=2.0.0 # Apache-2.0
 oslotest>=3.2.0 # Apache-2.0
 yaql>=1.1.3 # Apache 2.0 License
 ansible-runner>=1.4.2 # Apache

tox.ini

@@ -13,7 +13,9 @@ deps =
        -c{env:TOX_CONSTRAINTS_FILE:https://releases.openstack.org/constraints/upper/wallaby}
        -r{toxinidir}/requirements.txt
        -r{toxinidir}/test-requirements.txt
-commands = python setup.py testr --slowest --testr-args='{posargs}'
+commands =
+  stestr run {posargs}
+  stestr slowest
 
 [testenv:venv]
 commands = {posargs}
@@ -71,7 +73,15 @@ whitelist_externals =
 commands = bash -c tools/releasenotes_tox.sh
 
 [testenv:cover]
-commands = python setup.py test --coverage --coverage-package-name=tripleo_heat_templates --testr-args='{posargs}'
+setenv =
+  PYTHON=coverage run --source tripleo_heat_templates --parallel-mode
+commands =
+  coverage erase
+  stestr run {posargs}
+  coverage combine
+  coverage html -d cover
+  coverage xml -o cover/coverage.xml
+  coverage report
 
 [testenv:genconfig]
 commands =