Added snapstack test.

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

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

Change-Id: If52e45bbef18a3ad7da993c93eb78f8aea687c5b

tests/nova.sh

@@ -0,0 +1,60 @@
+#!/bin/bash
+
+set -ex
+
+source $BASE_DIR/admin-openrc
+
+openstack user show nova || {
+    openstack user create --domain default --password nova nova
+    openstack role add --project service --user nova admin
+}
+
+openstack user show placement || {
+    openstack user create --domain default --password placement placement
+    openstack role add --project service --user placement admin
+}
+
+openstack service show compute || {
+    openstack service create --name nova \
+      --description "OpenStack Compute" compute
+
+    for endpoint in public internal admin; do
+        openstack endpoint create --region RegionOne \
+          compute $endpoint http://localhost:8774/v2.1/%\(tenant_id\)s || :
+    done
+}
+
+openstack service show placement || {
+    openstack service create --name placement \
+      --description "Placement API" placement
+
+    for endpoint in public internal admin; do
+        openstack endpoint create --region RegionOne \
+          placement $endpoint http://localhost:8778 || :
+    done
+}
+
+
+while sudo [ ! -d /var/snap/nova/common/etc/nova/ ]; do sleep 0.1; done;
+sudo cp -r $BASE_DIR/etc/snap-nova/* /var/snap/nova/common/etc/
+
+# Manually define alias if snap isn't installed from snap store.
+# Otherwise, snap store defines this alias automatically.
+snap aliases nova | grep nova-manage || sudo snap alias nova.manage nova-manage
+
+sudo nova-manage api_db sync
+sudo nova-manage cell_v2 list_cells | grep cell0 || sudo nova-manage cell_v2 map_cell0
+sudo nova-manage cell_v2 list_cells | grep cell1 || sudo nova-manage cell_v2 create_cell --name=cell1 --verbose
+sudo nova-manage db sync
+
+sudo systemctl restart snap.nova.*
+
+while ! nc -z localhost 8774; do sleep 0.1; done;
+
+sleep 5
+
+openstack flavor show m1.tiny || openstack flavor create --id 1 --ram 512 --disk 1 --vcpus 1 m1.tiny
+openstack flavor show m1.small || openstack flavor create --id 2 --ram 2048 --disk 20 --vcpus 1 m1.small
+openstack flavor show m1.medium || openstack flavor create --id 3 --ram 4096 --disk 20 --vcpus 2 m1.medium
+openstack flavor show m1.large || openstack flavor create --id 4 --ram 8192 --disk 20 --vcpus 4 m1.large
+openstack flavor show m1.xlarge || openstack flavor create --id 5 --ram 16384 --disk 20 --vcpus 8 m1.xlarge

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 nova. Override the 'nova'
+        # step with a locally built snap. neutron, keystone, etc. will still
+        # be installed as normal from the store.
+        setup = Setup()
+        setup.add_steps(('nova', Step(
+            snap='nova',
+            script_loc='./tests/',
+            scripts=['nova.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/