Simplify test force delete snapshot unit test

Make this test simple in just verifying if we have a snapshot and we do
a force delete that we get back an ok response from the controller.
Removing out RPC call and verifying snapshot was deleted since that's
out of the scope here.

Closes-Bug: #1291108
Change-Id: If10b1057cf170e77527a0933a1ddf1a6a59baa1d

cinder/tests/api/contrib/test_admin_actions.py

@@ -12,7 +12,6 @@
 
 import ast
 import tempfile
-import time
 import webob
 
 from oslo.config import cfg
@@ -28,7 +27,6 @@ from cinder.tests.api import fakes
 from cinder.tests.api.v2 import stubs
 from cinder.tests import cast_as_call
 from cinder.volume import api as volume_api
-from cinder.volume import utils as volutils
 
 CONF = cfg.CONF
 
@@ -265,16 +263,11 @@ class AdminActionsTest(test.TestCase):
         self.assertRaises(exception.NotFound, db.volume_get, ctx, volume['id'])
 
     def test_force_delete_snapshot(self):
-        self.stubs.Set(volutils, 'clear_volume',
-                       lambda a, b, volume_clear=CONF.volume_clear,
-                       volume_clear_size=CONF.volume_clear_size: None)
-        # admin context
         ctx = context.RequestContext('admin', 'fake', True)
-        # current status is creating
-        volume = db.volume_create(ctx, {'host': 'test', 'size': 1})
-        snapshot = db.snapshot_create(ctx, {'status': 'creating',
-                                            'volume_size': 1,
-                                            'volume_id': volume['id']})
+        snapshot = stubs.stub_snapshot(1, host='foo')
+        self.stubs.Set(db, 'volume_get', lambda x, y: snapshot)
+        self.stubs.Set(db, 'snapshot_get', lambda x, y: snapshot)
+        self.stubs.Set(volume_api.API, 'delete_snapshot', lambda *x, **y: True)
         path = '/v2/fake/snapshots/%s/action' % snapshot['id']
         req = webob.Request.blank(path)
         req.method = 'POST'
@@ -282,36 +275,8 @@ class AdminActionsTest(test.TestCase):
         req.body = jsonutils.dumps({'os-force_delete': {}})
         # attach admin context to request
         req.environ['cinder.context'] = ctx
-        # start service to handle rpc.cast for 'delete snapshot'
-        svc = self.start_service('volume', host='test')
-
-        cast_as_call.mock_cast_as_call(svc.manager.scheduler_rpcapi.client)
-
-        # NOTE(flaper87): Instead fo patch `os.path.exists`
-        # create a fake path for the snapshot that should
-        # be deleted and let the check pass
-        def local_path(volume, vg=None):
-            tfile = tempfile.mkstemp(suffix='-cow', dir=self.tempdir)
-            # NOTE(flaper87): Strip `-cow` since it'll be added
-            # later in the happy path.
-            return tfile[1].strip('-cow')
-
-        self.stubs.Set(svc.manager.driver, "local_path", local_path)
-        # make request
         resp = req.get_response(app())
-
-        # NOTE(flaper87): Since we're using a nested service
-        # lets make sure we yield the control over the service
-        # thread so it can process the recent calls.
-        time.sleep(0.6)
-
-        # Request is accepted
         self.assertEqual(resp.status_int, 202)
-        # snapshot is deleted
-        self.assertRaises(exception.NotFound, db.snapshot_get, ctx,
-                          snapshot['id'])
-        # cleanup
-        svc.stop()
 
     def test_force_detach_instance_attached_volume(self):
         # admin context