state/api: Split client Machiner into subpackage

state/apiserver/login_test.go

 // Copyright 2012, 2013 Canonical Ltd.
 // Licensed under the AGPLv3, see LICENCE file for details.
 
 package apiserver_test
 
 import (
         . "launchpad.net/gocheck"
         "launchpad.net/juju-core/state/api"
         "launchpad.net/juju-core/state/apiserver"
         coretesting "launchpad.net/juju-core/testing"
@@ skipping 50 matching lines @@
         }
         for i, t := range badLoginTests {
                 c.Logf("test %d; entity %q; password %q", i, t.tag, t.password)
                 info.Tag = ""
                 info.Password = ""
                 func() {
                         st, err := api.Open(info)
                         c.Assert(err, IsNil)
                         defer st.Close()
 
-                        _, err = st.Machiner("")
+                        _, err = st.Machiner()
                         c.Assert(err, ErrorMatches, "not logged in")
                         c.Assert(api.ErrCode(err), Equals, api.CodeUnauthorized, Commentf("error %#v", err))
 
                         // TODO (dimitern) This a really awkward way of testing -
                         // calling Login again here to reauth on the same
                         // connection. Seems wrong.
                         err = st.Login(t.tag, t.password)
                         c.Assert(err, ErrorMatches, t.err)
                         c.Assert(api.ErrCode(err), Equals, t.code)
 
-                        _, err = st.Machiner("")
+                        _, err = st.Machiner()
                         c.Assert(err, ErrorMatches, "not logged in")
                         c.Assert(api.ErrCode(err), Equals, api.CodeUnauthorized)
                 }()
         }
 }