func (s *MongoSuite) dialAndTestInitiate(c *gc.C, inst *gitjujutesting.MgoInstance, addr string) {
session := inst.MustDialDirect()
defer session.Close()
mode := session.Mode()
err := Initiate(session, addr, rsName, initialTags)
c.Assert(err, gc.IsNil)
// make sure we haven't messed with the session's mode
c.Assert(session.Mode(), gc.Equals, mode)
// Ids start at 1 for us, so we can differentiate between set and unset
expectedMembers := []Member{Member{Id: 1, Address: addr, Tags: initialTags}}
// need to set mode to strong so that we wait for the write to succeed
// before reading and thus ensure that we're getting consistent reads.
session.SetMode(mgo.Strong, false)
mems, err := CurrentMembers(session)
c.Assert(err, gc.IsNil)
c.Assert(mems, jc.DeepEquals, expectedMembers)
// now add some data so we get a more real-life test
loadData(session, c)
}
