diff --git a/.gitignore b/.gitignore
index cbe9e56..2e2c30a 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,5 +1,5 @@
 /build/
-.testrepository
+.stestr/
 .tox/
 ceilometer_powervm.egg-info/
 *.pyc
@@ -7,3 +7,5 @@ doc/build
 AUTHORS
 ChangeLog
 /.idea/
+.coverage
+cover/
diff --git a/.stestr.conf b/.stestr.conf
new file mode 100644
index 0000000..527ec98
--- /dev/null
+++ b/.stestr.conf
@@ -0,0 +1,4 @@
+[DEFAULT]
+test_path=./ceilometer_powervm/tests
+top_dir=./
+
diff --git a/.testr.conf b/.testr.conf
deleted file mode 100644
index 3199fbb..0000000
--- a/.testr.conf
+++ /dev/null
@@ -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:-600} \
-             ${PYTHON:-python} -m subunit.run discover -t ./ . $LISTOPT $IDOPTION
-test_id_option=--load-list $IDFILE
-test_list_option=--list
diff --git a/test-requirements.txt b/test-requirements.txt
index 6006621..18b5866 100644
--- a/test-requirements.txt
+++ b/test-requirements.txt
@@ -7,11 +7,10 @@ bashate>=0.5.1 # Apache-2.0
 coverage!=4.4,>=4.0 # Apache-2.0
 fixtures>=3.0.0 # Apache-2.0/BSD
 python-subunit>=1.0.0 # Apache-2.0/BSD
-testrepository>=0.0.18 # Apache-2.0/BSD
+stestr>=1.0.0 # Apache-2.0
 testscenarios>=0.4 # Apache-2.0/BSD
 testtools>=2.2.0 # MIT
 oslotest>=3.2.0 # Apache-2.0
-os-testr>=1.0.0 # Apache-2.0
 sphinx!=1.6.6,!=1.6.7,>=1.6.5 # BSD
 oslosphinx>=4.7.0 # Apache-2.0
 mock>=2.0.0 # BSD
diff --git a/tools/pretty_tox.sh b/tools/pretty_tox.sh
deleted file mode 100644
index 799ac18..0000000
--- a/tools/pretty_tox.sh
+++ /dev/null
@@ -1,16 +0,0 @@
-#!/usr/bin/env bash
-
-set -o pipefail
-
-TESTRARGS=$1
-
-# --until-failure is not compatible with --subunit see:
-#
-# https://bugs.launchpad.net/testrepository/+bug/1411804
-#
-# this work around exists until that is addressed
-if [[ "$TESTARGS" =~ "until-failure" ]]; then
-    python setup.py testr --slowest --testr-args="$TESTRARGS"
-else
-    python setup.py testr --slowest --testr-args="--subunit $TESTRARGS" | subunit-trace -f
-fi
diff --git a/tox.ini b/tox.ini
index ce6b40e..b416fd6 100644
--- a/tox.ini
+++ b/tox.ini
@@ -11,16 +11,39 @@ ignore_basepython_conflict = True
 basepython = python3
 usedevelop = True
 install_command = pip install {opts} {packages}
-setenv = VIRTUAL_ENV={envdir}
-	 PYTHONHASHSEED=0
+setenv =
+  VIRTUAL_ENV={envdir}
+  PYTHONHASHSEED=0
+  LANGUAGE=en_US
+  LC_ALL=en_US.utf-8
+  OS_STDOUT_CAPTURE=1
+  OS_STDERR_CAPTURE=1
+  OS_TEST_TIMEOUT=60
 deps =
        -c{env:UPPER_CONSTRAINTS_FILE:https://git.openstack.org/cgit/openstack/requirements/plain/upper-constraints.txt}
        -r{toxinidir}/requirements.txt
        -r{toxinidir}/test-requirements.txt
        -egit+https://git.openstack.org/openstack/ceilometer#egg=ceilometer
        -rhttps://git.openstack.org/cgit/openstack/ceilometer/plain/test-requirements.txt
-whitelist_externals = bash
-commands = bash tools/pretty_tox.sh '{posargs}'
+whitelist_externals =
+  bash
+  find
+commands =
+  find . -type f -name "*.pyc" -delete
+
+[testenv:py27]
+basepython = python2.7
+commands =
+  {[testenv]commands}
+  stestr run {posargs}
+  stestr slowest
+
+[testenv:py35]
+basepython = python3.5
+commands =
+  {[testenv]commands}
+  stestr run {posargs}
+  stestr slowest
 
 [testenv:pep8]
 commands = flake8
@@ -29,7 +52,17 @@ commands = flake8
 commands = {posargs}
 
 [testenv:cover]
-commands = python -m ceilometer.openstack.common.lockutils python setup.py testr --slowest --coverage --testr-args="{posargs}"
+setenv =
+    {[testenv]setenv}
+    PYTHON=coverage run --source ceilometer_powervm --parallel-mode
+commands =
+    {[testenv]commands}
+    coverage erase
+    stestr run {posargs}
+    coverage combine
+    coverage html -d cover
+    coverage xml -o cover/coverage.xml
+    coverage report
 
 [testenv:docs]
 commands = python setup.py build_sphinx