Update tox.ini to conform to the PTI

The current Python Testing Interface specifies the use of
stester, so update tox.ini to use it.

Closes-bug: #1780272
Change-Id: I6b6c60486a26cfbb5793c074fe6f554c6a324846
Co-Authored-By: Nguyen Hai <nguyentrihai93@gmail.com>

.stestr.conf

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

.testr.conf

@@ -1,8 +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:-160} \
-             ${PYTHON:-python} -m subunit.run discover -t ./ ${OS_TEST_PATH:-./glance_store/tests/unit} $LISTOPT $IDOPTION
-
-test_id_option=--load-list $IDFILE
-test_list_option=--list

lower-constraints.txt

@@ -81,7 +81,6 @@ Sphinx==1.6.2
 sphinxcontrib-websupport==1.0.1
 stestr==2.0.0
 stevedore==1.20.0
-testrepository==0.0.18
 testscenarios==0.4
 testtools==2.2.0
 traceback2==1.4.0

test-requirements.txt

@@ -12,7 +12,7 @@ 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
 requests-mock>=1.2.0 # Apache-2.0
-testrepository>=0.0.18 # Apache-2.0/BSD
+stestr>=2.0.0 # Apache-2.0
 testscenarios>=0.4 # Apache-2.0/BSD
 testtools>=2.2.0 # MIT
 oslotest>=3.2.0 # Apache-2.0

tox.ini

@@ -11,7 +11,7 @@ deps =
    -r{toxinidir}/requirements.txt
    -r{toxinidir}/test-requirements.txt
 passenv = OS_TEST_*
-commands = ostestr --slowest {posargs}
+commands = stestr run --slowest {posargs}
 
 [testenv:docs]
 basepython = python3
@@ -45,8 +45,13 @@ commands = bandit -r glance_store -x tests --skip B101,B110,B303
 
 [testenv:cover]
 basepython = python3
-setenv = VIRTUAL_ENV={envdir}
-commands = python setup.py testr --coverage --testr-args='^(?!.*test.*coverage).*$'
+setenv =
+    PYTHON=coverage run --source glance_store --parallel-mode
+commands =
+    stestr run {posargs}
+    coverage combine
+    coverage html -d cover
+    coverage xml -o cover/coverage.xml
 
 [testenv:venv]
 basepython = python3
@@ -56,13 +61,12 @@ commands = {posargs}
 # running functional tests.
 [testenv:functional-swift]
 sitepackages = True
-setenv = OS_TEST_PATH=./glance_store/tests/functional/swift
-commands = ostestr --slowest --testr-args='glance_store.tests.functional.swift'
+commands =
+    stestr run --slowest --test-path=./glance_store/tests/functional/swift
 
 [testenv:functional-filesystem]
-sitepackages = True
-setenv = OS_TEST_PATH=./glance_store/tests/functional/filesystem
-commands = ostestr --slowest --testr-args='glance_store.tests.functional.filesystem'
+commands =
+    stestr run --slowest --test-path=./glance_store/tests/functional/filesystem
 
 [doc8]
 ignore-path = .venv,.git,.tox,*glance_store/locale*,*lib/python*,glance_store.egg*,doc/build,*requirements.txt,lower-constraints.txt