// NewRelationer creates a new Relationer. The unit will not join the
// relation until explicitly requested.
func NewRelationer(ru *state.RelationUnit, dir *relation.StateDir, hooks chan<- hook.Info) *Relationer {
return &Relationer{
ctx: NewContextRelation(ru, dir.State().Members),
ru: ru,
dir: dir,
hooks: hooks,
}
}
func assertState(c *C, dir *relation.StateDir, relsdir string, relationId int, members msi, pending string, deleted bool) {
expect := &relation.State{
RelationId: relationId,
Members: map[string]int64(members),
ChangedPending: pending,
}
c.Assert(dir.State(), DeepEquals, expect)
if deleted {
_, err := os.Stat(filepath.Join(relsdir, strconv.Itoa(relationId)))
c.Assert(os.IsNotExist(err), Equals, true)
} else {
fresh, err := relation.ReadStateDir(relsdir, relationId)
c.Assert(err, IsNil)
c.Assert(fresh.State(), DeepEquals, expect)
}
}