Switch to stestr

stestr is maintained, while testrepository is not. OpenStack is
migrating to stestr, go ahead and follow suit.

The --no-subunit-trace flag is added to keep the quiet test run
behavior. If we remove it, stestr will by default print the name of each
test as it starts it.

This uses environment inclusions which need tox 2.8.1 due to a bug fix.
So increase the tox minversion.

Change-Id: I08cd4bee86b56d9a68644b049497c34e34e5f226

.coveragerc

@@ -0,0 +1,7 @@
+[run]
+branch = True
+source = nodepool
+omit = nodepool/tests/*
+
+[report]
+ignore_errors = True

.stestr.conf

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

.testr.conf

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

test-requirements.txt

@@ -8,6 +8,6 @@ reno>=2.5.0 # Apache-2.0
 fixtures>=0.3.12
 mock>=1.0
 python-subunit
-testrepository>=0.0.13
+stestr>=1.0.0 # Apache-2.0
 testscenarios
 testtools>=0.9.27

tox.ini

@@ -1,5 +1,5 @@
 [tox]
-minversion = 1.6
+minversion = 2.8.1
 skipsdist = True
 envlist = pep8,py35
 
@@ -8,13 +8,16 @@ envlist = pep8,py35
 setenv = STATSD_HOST=localhost
          STATSD_PORT=8125
          VIRTUAL_ENV={envdir}
+         OS_LOG_CAPTURE={env:OS_LOG_CAPTURE:true}
+         OS_STDOUT_CAPTURE={env:OS_STDOUT_CAPTURE:true}
+         OS_STDERR_CAPTURE={env:OS_STDERR_CAPTURE:true}
 usedevelop = True
 install_command = pip install {opts} {packages}
 deps = -r{toxinidir}/requirements.txt
        -r{toxinidir}/test-requirements.txt
 passenv = NODEPOOL_ZK_HOST
-commands =
-  python setup.py testr --slowest --testr-args='{posargs}'
+commands = stestr run --no-subunit-trace {posargs}
+           stestr slowest
 
 [testenv:pep8]
 basepython = python3
@@ -30,8 +33,14 @@ commands = bindep test
 
 [testenv:cover]
 basepython = python3
+setenv =
+    {[testenv]setenv}
+    PYTHON=coverage run --source nodepool --parallel-mode
 commands =
-  python setup.py testr --coverage
+    stestr run --no-subunit-trace {posargs}
+    coverage combine
+    coverage html -d cover
+    coverage xml -o cover/coverage.xml
 
 [testenv:docs]
 basepython = python3