Fix coverage tests

This project needs some special setup before running its tests, and
that wasn't happening in the cover tox env. This switches cover to
use the same methods for running tests as the regular test envs.

Change-Id: Ie4a6543286caa11dc15173679455b2aa2020dc97

.coveragerc

@@ -1,7 +1,7 @@
 [run]
 branch = True
 source = tooz
-omit = tooz/tests/*,tooz/openstack/*
+omit = tooz/tests/*
 
 [report]
 ignore_errors = True

tox.ini

@@ -46,7 +46,42 @@ commands = {posargs}
 
 [testenv:cover]
 basepython = python3
-commands = python setup.py testr --slowest --coverage --testr-args="{posargs}"
+# NOTE(bnemec): Unfortunately, referencing testenv deps doesn't work here, so
+# we have to duplicate the entire list.
+# See https://github.com/tox-dev/tox/issues/706
+deps = .[test,zake,ipc,memcached,mysql,etcd,etcd3,etcd3gw]
+    zookeeper: .[zookeeper]
+    redis: .[redis]
+    sentinel: .[redis]
+    memcached: .[memcached]
+    postgresql: .[postgresql]
+    mysql: .[mysql]
+    etcd: .[etcd]
+    etcd3: .[etcd3]
+    etcd3gw: .[etcd3gw]
+    consul: .[consul]
+    coverage
+setenv =
+    PYTHON=coverage run --source tooz --parallel-mode
+    TOOZ_TEST_URLS = file:///tmp zake:// ipc://
+    zookeeper: TOOZ_TEST_DRIVERS = zookeeper
+    redis: TOOZ_TEST_DRIVERS = redis
+    sentinel: TOOZ_TEST_DRIVERS = redis --sentinel
+    memcached: TOOZ_TEST_DRIVERS = memcached
+    mysql: TOOZ_TEST_DRIVERS = mysql
+    postgresql: TOOZ_TEST_DRIVERS = postgresql
+    etcd: TOOZ_TEST_DRIVERS = etcd,etcd --cluster
+    etcd3: TOOZ_TEST_DRIVERS = etcd
+    etcd3: TOOZ_TEST_ETCD3 = 1
+    etcd3gw: TOOZ_TEST_DRIVERS = etcd
+    etcd3gw: TOOZ_TEST_ETCD3GW = 1
+    consul: TOOZ_TEST_DRIVERS = consul
+commands =
+    {toxinidir}/run-tests.sh {toxinidir}/tools/pretty_tox.sh "{posargs}"
+    {toxinidir}/run-examples.sh
+    coverage combine
+    coverage html -d cover
+    coverage xml -o cover/coverage.xml
 
 [testenv:docs]
 basepython = python3