def testCoopRevisions(self):
"""
Test the saving mechanism for "Coop" which maintains revisions.
"""
# Set up a Coop to work with
c = Coop()
c.name = "Testy Coop"
c.created_by = CoopUser.objects.all()[0]
c.picture = CoopPicture.objects.all()[0]
c.contactable = Contactable.objects.all()[0]
c.save()
# Make sure it saved right
orig_id = c.id
self.assertEquals(c.branch.id, orig_id)
self.assertEquals(c.revision, 0)
# Try making a revision
c.name = "Testy Coop Revised"
c.save()
self.assertEquals(c.revision, 1)
self.assertEquals(c.id, orig_id)
self.assertEquals(c.branch.id, orig_id)
old_version = Coop.objects.get(name = "Testy Coop")
self.assertEquals(old_version.id, orig_id + 1)
self.assertEquals(old_version.revision, c.revision - 1)
# Make sure the old version copied right
old_revisions = Coop.objects.filter(name = "Testy Coop")
self.failUnless(len(old_revisions) > 0)
old_revision = old_revisions[0]
self.assertEqual(old_revision.branch, c.branch)
self.assertNotEqual(old_revision.id, c.id)
# Make sure you can't duplicate revision numbers
bad = Coop()
bad.name = "Bad"
bad.created_by = CoopUser.objects.all()[0]
bad.contactable = Contactable.objects.all()[0]
bad.branch = c
bad.revision = 0
self.assertRaises(IntegrityError, bad.save)
# Make sure revision of an old version pops out on top. If we try to
# edit an old revision, it should become the latest revision when
# saved.
all_revisions = Coop.objects.filter(branch__id = orig_id)
latest = all_revisions[len(all_revisions) - 1]
fork = all_revisions[0]
self.assertEquals(fork.revision, 0)
fork.name = "Testy Coop fork from old rev."
fork.save()
self.assertEqual(fork.revision, latest.revision + 1)
