def setUp(self):
BaseTestCase.setUp(self)
notifier = changes.ChangeNotifier(self.db, 'test')
notifier.addListener(self)
d = self.db.createDB('test')
d.addCallback(lambda _: notifier.start())
return d
def testChanges(self):
notifier = changes.ChangeNotifier(self.db, 'test')
notifier.addListener(self)
d = notifier.start()
def create(_):
changeD = self.waitForChange()
saveD = self.db.saveDoc('test', {'key': 'value'})
saveD.addCallback(lambda r: setattr(self, 'firstid', r['id']))
dl = defer.DeferredList([saveD, changeD])
def check(_):
c = self.lastChange
self.assertEquals(c['id'], self.firstid)
self.assertEquals(len(c['changes']), 1)
self.assertEquals(c['changes'][0]['rev'][:2], '1-')
dl.addCallback(check)
dl.addCallback(lambda _: self.db.openDoc('test', self.firstid))
dl.addCallback(lambda r: setattr(self, 'first', r))
return dl
d.addCallback(create)
def update(_):
changeD = self.waitForChange()
self.first['key'] = 'othervalue'
saveD = self.db.saveDoc('test', self.first, docId=self.firstid)
dl = defer.DeferredList([saveD, changeD])
def check(_):
c = self.lastChange
self.assertEquals(c['id'], self.firstid)
self.assertEquals(len(c['changes']), 1)
self.assertEquals(c['changes'][0]['rev'][:2], '2-')
dl.addCallback(check)
return dl
d.addCallback(update)
d.addCallback(lambda _: notifier.stop())
d.addCallback(lambda _: self.waitForNextCycle())
return d
def _createNotifier(self, **options):
notifier = changes.ChangeNotifier(self.db, 'test', **options)
notifier.addListener(self)
return notifier
def testChangesFiltered(self):
"""
This tests that we can use a filter to only receive notifications
for documents that interest us.
"""
notifier = changes.ChangeNotifier(self.db, 'test')
notifier.addListener(self)
d = defer.Deferred()
filterjs = """
function(doc, req) {
log(req.query);
var docids = eval('(' + req.query.docids + ')');
log(docids);
if (docids.indexOf(doc._id) > -1) {
return true;
} else {
return false;
}
}
"""
d.addCallback(lambda _: self.db.saveDoc('test', {
'filters': {
"test": filterjs,
},
}, '_design/design_doc'))
d.addCallback(lambda _: notifier.start(filter='design_doc/test',
docids=client.json.dumps([
'one',
])))
def create(_):
changeD = self.waitForChange()
saveD = self.db.saveDoc('test', {'key': 'value'}, docId='one')
saveD.addCallback(lambda r: setattr(self, 'firstid', r['id']))
dl = defer.DeferredList([saveD, changeD])
def check(_):
c = self.lastChange
self.assertEquals(c['id'], self.firstid)
self.assertEquals(len(c['changes']), 1)
self.assertEquals(c['changes'][0]['rev'][:2], '1-')
self.assertEquals(c['seq'], 2)
dl.addCallback(check)
dl.addCallback(lambda _: self.db.openDoc('test', self.firstid))
dl.addCallback(lambda r: setattr(self, 'first', r))
return dl
d.addCallback(create)
def update(_):
changeD = self.waitForChange()
self.first['key'] = 'othervalue'
saveD = self.db.saveDoc('test', self.first, docId=self.firstid)
saveD.addCallback(lambda r: setattr(self, 'firstrev', r['rev']))
dl = defer.DeferredList([saveD, changeD])
def check(_):
c = self.lastChange
self.assertEquals(c['id'], self.firstid)
self.assertEquals(len(c['changes']), 1)
self.assertEquals(c['changes'][0]['rev'][:2], '2-')
self.assertEquals(c['seq'], 3)
dl.addCallback(check)
return dl
d.addCallback(update)
def createTwoAndUpdateOne(_):
# since createTwo is not supposed to trigger a change, we can't
# assert that it didn't until we make another change that is
# detected.
changeD = self.waitForChange()
saveD = self.db.saveDoc('test', {'key': 'othervalue'}, docId='two')
def update(_):
self.first['key'] = 'thirdvalue'
self.first['_rev'] = self.firstrev
return self.db.saveDoc('test', self.first, docId=self.firstid)
saveD.addCallback(update)
dl = defer.DeferredList([saveD, changeD])
# FIXME: this failure actually gets swallowed, even though
# DeferredList should not do that; so force DeferredList to fail
# to reproduce, remove the line that updates firstrev, and
# don't add the eb below
def eb(failure):
dl.errback(failure)
# self.fail('Could not update: %r' % failure)
return failure
saveD.addErrback(eb)
def check(_):
c = self.lastChange
self.assertEquals(c['id'], self.firstid)
self.assertEquals(len(c['changes']), 1)
self.assertEquals(c['changes'][0]['rev'][:2], '3-')
# Note that we didn't receive change with seq 4,
# which was the creation of doc two
self.assertEquals(c['seq'], 5)
dl.addCallback(check)
return dl
d.addCallback(createTwoAndUpdateOne)
d.addCallback(lambda _: notifier.stop())
d.addCallback(lambda _: self.waitForNextCycle())
d.callback(None)
return d