Switch to stestr

According to Openstack summit session [1],
stestr is maintained project to which all Openstack projects should migrate.
Let's switch to stestr as other projects have already moved to it.

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

Change-Id: Ic098f8560599554e0b6bb16ae326d4d30a8a5504

.gitignore

@@ -7,6 +7,7 @@ dist/
 .DS_Store
 *.log
 .testrepository
+.stestr/
 subunit.log
 build
 swiftclient/versioninfo

.stestr.conf

@@ -0,0 +1,4 @@
+[DEFAULT]
+test_path=${OS_TEST_PATH:-./tests/unit}
+top_dir=./
+

lower-constraints.txt

@@ -39,7 +39,7 @@ six==1.9.0
 snowballstemmer==1.2.1
 sphinx==1.6.2
 sphinxcontrib-websupport==1.0.1
-testrepository==0.0.18
+stestr==2.0.0
 testtools==2.2.0
 traceback2==1.4.0
 unittest2==1.1.0

test-requirements.txt

@@ -5,6 +5,6 @@ keystoneauth1>=3.4.0  # Apache-2.0
 mock>=1.2.0 # BSD
 oslosphinx>=4.7.0  # Apache-2.0
 sphinx!=1.6.6,!=1.6.7,>=1.6.2 # BSD
-testrepository>=0.0.18
+stestr>=2.0.0 # Apache-2.0
 reno>=2.5.0 # Apache-2.0
 openstackdocstheme>=1.18.1 # Apache-2.0

tox.ini

@@ -16,8 +16,8 @@ deps = -r{toxinidir}/requirements.txt
        .[keystone]
 commands = sh -c '(find . -not \( -type d -name .?\* -prune \) \
            \( -type d -name "__pycache__" -or -type f -name "*.py[co]" \) \
-           -print0; find . -name "*.dbm*" -print0) | xargs -0 rm -rf'
-           python setup.py testr --testr-args="{posargs}"
+           -print0) | xargs -0 rm -rf'
+           stestr run {posargs}
 whitelist_externals = sh
 passenv = SWIFT_* *_proxy
 
@@ -32,17 +32,28 @@ commands = {posargs}
 
 [testenv:cover]
 basepython = python3
-commands = python setup.py testr --coverage
-           coverage report
+setenv =
+    PYTHON=coverage run --source swiftclient --parallel-mode
+commands =
+    stestr run
+    coverage combine
+    coverage html -d cover
+    coverage xml -o cover/coverage.xml
+    coverage report
 
 [testenv:func]
 basepython = python3
-setenv = OS_TEST_PATH=tests.functional
+setenv =
+    OS_TEST_PATH=tests.functional
+    PYTHON=coverage run --source swiftclient --parallel-mode
 whitelist_externals =
     coverage
     rm
 commands =
-    python setup.py testr --coverage --testr-args="--concurrency=1"
+    stestr run --concurrency=1
+    coverage combine
+    coverage html -d cover
+    coverage xml -o cover/coverage.xml
     coverage report -m
     rm -f .coverage