Switch to stestr for running unit tests

* As stestr is the successor of testr, it's time to switch to
  stestr for running refstack unit tests.

Change-Id: I3b9c0e2b4363dec24bad43bf5cfbeef4ecc7a37c

.gitignore

@@ -1,5 +1,5 @@
 *.pyc
-.testrepository/
+.stestr/
 .tox
 *.egg-info/
 *.egg

.stestr.conf

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

.testr.conf

@@ -1,4 +0,0 @@
-[DEFAULT]
-test_command=OS_STDOUT_CAPTURE=1 OS_STDERR_CAPTURE=1 coverage run -m subunit.run discover -t ./ -s ./refstack_client/tests/unit $LISTOPT $IDOPTION
-test_id_option=--load-list $IDFILE
-test_list_option=--list

test-requirements.txt

@@ -4,7 +4,7 @@ flake8==2.0
 docutils>=0.11  # OSI-Approved Open Source, Public Domain
 # required to build documentation
 sphinx>=1.6.2  # BSD
-testrepository>=0.0.18
+stestr>=1.1.0 # Apache-2.0
 testtools>=0.9.34
 mock
 coverage

tox.ini

@@ -12,8 +12,8 @@ setenv = VIRTUAL_ENV={envdir}
          LC_ALL=C
 deps = -r{toxinidir}/requirements.txt
        -r{toxinidir}/test-requirements.txt
-commands = /bin/rm -f .testrepository/times.dbm
-           python setup.py testr --testr-args='{posargs}'
+commands =
+  stestr --test-path ./refstack_client/tests/unit run {posargs}
 distribute = false
 
 [testenv:pep8]
@@ -25,13 +25,14 @@ distribute = false
 commands = {posargs}
 
 [testenv:cover]
-commands = coverage run \
-    --include './refstack_client/*' \
-    --omit './refstack_client/tests*' \
-    -m testtools.run discover refstack_client.tests.unit
-           coverage report
+commands =
+  coverage erase
+  find . -type f -name "*.pyc" -delete
+  stestr --test-path ./refstack_client/tests run {posargs}
+  coverage combine
   coverage html -d cover
-           /bin/rm .coverage
+  coverage xml -o cover/coverage.xml
+  coverage report
 
 [testenv:docs]
 commands = python setup.py build_sphinx {posargs}