Use testrepository as the test runner

There are several benefits moving to testr brings
  - It reduces the diversity of tools in OpenStack
  - testrepository and related components are used in OpenStack Infra
    environment for data analisys and deeper integration
  - Reduces chances of a new dependency hell because py.test won’t be
    added to global-requirements
  - Sticking to global requirements is an idea which is in the scope
    of discussions around Fuel.

In order to facilitate both running specific tests and debugging
this patch introduces dbgunit and dbgfunc tox environments that
utilize oslotest to run unit and functional tests correspondingly
and respect pdb.

Examples:

  - tox -e dbgunit v1.test_parser
  - tox -e dbgfunc v1.test_client.TestHandlers.test_env_action

Partial-bug: #1499659
Change-Id: Ia3e9c16bb21a875ceea3ea3a30c12ac8dfabc277

.testr.conf

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

test-requirements.txt

@@ -2,11 +2,10 @@ hacking>=0.10.0,<0.11
 mock>=1.0
 oslotest>=1.5.1,<1.6.0 # Apache-2.0
 requests-mock>=0.6.0 # Apache-2.0
+testrepository>=0.0.18
 testtools>=0.9.36,!=1.2.0
 
 # Files beyond this line are not in Global Requirements list
 # and must be added there.
 pyprof2calltree>=1.3.2
 gprof2dot>=2014.09.29
-pytest<2.8.0
-pytest-cov>=2.0.0

tox.ini

@@ -7,6 +7,7 @@ envlist = py26,py27,pep8,functional,cleanup
 usedevelop = True
 install_command = pip install --allow-external -U {opts} {packages}
 whitelist_externals = bash
+                      oslo_debug_helper
 setenv = VIRTUAL_ENV={envdir}
          ARTIFACTS={toxinidir}/{env:ARTIFACTS:test_run}
          FUELCLIENT_JUNIT={env:FUELCLIENT_JUNIT:fuelclient}-{envname}.xml
@@ -29,13 +30,22 @@ setenv = VIRTUAL_ENV={envdir}
 deps = -r{toxinidir}/requirements.txt
        -r{toxinidir}/test-requirements.txt
 commands =
-    py.test -vv --junit-xml $FUELCLIENT_JUNIT {posargs:fuelclient/tests/unit}
+    bash -c "TESTS_DIR={posargs:./fuelclient/tests/unit} python setup.py test --slowest"
 
 [testenv:functional]
 commands =
     bash {toxinidir}/tools/cleanup.sh
     bash {toxinidir}/tools/prepare_nailgun.sh
-    py.test -vv --junit-xml $FUELCLIENT_JUNIT {posargs:fuelclient/tests/functional}
+    bash -c "TESTS_DIR={posargs:./fuelclient/tests/functional} python setup.py test --slowest"
+
+[testenv:dbgunit]
+commands = oslo_debug_helper -t {toxinidir}/fuelclient/tests/unit {posargs}
+
+[testenv:dbgfunc]
+commands =
+    bash {toxinidir}/tools/cleanup.sh
+    bash {toxinidir}/tools/prepare_nailgun.sh
+    oslo_debug_helper -t {toxinidir}/fuelclient/tests/functional {posargs}
 
 [testenv:cleanup]
 commands =
@@ -53,7 +63,7 @@ commands =
 
 [testenv:cover]
 commands =
-    py.test -vv --junit-xml $FUELCLIENT_JUNIT --cov=fuelclient {posargs:fuelclient/tests/unit}
+    bash -c "TESTS_DIR={posargs:./fuelclient/tests/unit} python setup.py testr --coverage"
 
 [testenv:venv]
 commands = {posargs:}