Added snapstack test.

Tweaked tox.ini to invoke snapstack, and added test_snapstack.py to
tests dir.

Also added neutron.sh to neutron/tests, as part of the plan to move
those scripts from snap-test to the individual snaps.

Change-Id: Ie0e7d3211b99ace8f5c19e2781d928f3a589acce

tests/neutron.sh

@@ -0,0 +1,38 @@
+#!/bin/bash
+
+set -ex
+
+source $BASE_DIR/admin-openrc
+
+openstack user show neutron || {
+    openstack user create --domain default --password neutron neutron
+    openstack role add --project service --user neutron admin
+}
+
+openstack service show network || {
+    openstack service create --name neutron \
+      --description "OpenStack Network" network
+
+    for endpoint in public internal admin; do
+        openstack endpoint create --region RegionOne \
+          network $endpoint http://localhost:9696 || :
+    done
+}
+
+while sudo [ ! -d /var/snap/neutron/common/etc/neutron/ ]; do sleep 0.1; done;
+sudo cp -r $BASE_DIR/etc/snap-neutron/* /var/snap/neutron/common/etc/
+
+# Manually define alias if snap isn't installed from snap store.
+# Otherwise, snap store defines this alias automatically.
+snap aliases neutron | grep neutron-db-manage || sudo snap alias neutron.manage neutron-db-manage
+
+sudo neutron-db-manage upgrade head
+
+sudo systemctl restart snap.neutron.*
+
+while ! nc -z localhost 9696; do sleep 0.1; done;
+
+neutron net-show test || {
+    neutron net-create test
+    neutron subnet-create --name test_subnet test 192.168.222.0/24
+}

tests/snapstack_test.py

@@ -0,0 +1,26 @@
+import unittest
+
+from snapstack import Plan, Setup, Step
+
+class SnapstackTest(unittest.TestCase):
+
+    def test_snapstack(self):
+        '''
+        _test_snapstack_
+
+        Run a basic smoke test, utilizing our snapstack testing harness.
+
+        '''
+        # snapstack already installs neutron. Override the 'neutron'
+        # step with a locally built snap. keystone, nova, etc. will still
+        # be installed as normal from the store.
+        setup = Setup()
+        setup.add_steps(('neutron', Step(
+            snap='neutron',
+            script_loc='./tests/',
+            scripts=['neutron.sh'],
+            snap_store=False)))
+
+        # Execute the snapstack tests
+        plan = Plan(base_setup=setup.steps())
+        plan.run()

tox.ini

@@ -5,14 +5,18 @@ skipsdist = True
 [testenv]
 basepython = python3.5
 install_command = pip install {opts} {packages}
-passenv = HOME TERM
+passenv =
+    HOME
+    TERM
+    SNAP_BUILD_PROXY
 whitelist_externals =
     sudo
     snapcraft
 
 [testenv:snap]
-deps = -r{toxinidir}/requirements.txt
+deps =
+    -r{toxinidir}/requirements.txt
+    git+https://github.com/openstack-snaps/snapstack
+    pytest
 commands =
-    sudo snap install core
-    snapcraft clean
-    snapcraft snap
+    py.test -s tests/