impl/memory: Implement Queries

impl/memory/datastore_index_test.go

 // Copyright 2015 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 package memory
 
 import (
         "testing"
         "time"
 
         ds "github.com/luci/gae/service/datastore"
+        "github.com/luci/gae/service/datastore/serialize"
         "github.com/luci/gkvlite"
         . "github.com/smartystreets/goconvey/convey"
 )
 
 func init() {
-        indexCreationDeterministic = true
+        serializationDeterministic = true
+        serialize.WritePropertyMapDeterministic = true
 }
 
 var fakeKey = key("knd", 10, key("parentKind", "sid"))
 
 func TestCollated(t *testing.T) {
         t.Parallel()
 
         Convey("TestCollated", t, func() {
                 Convey("nil list", func() {
                         pm := (ds.PropertyMap)(nil)
@@ skipping 353 matching lines @@
                                                 So(data[i], ShouldResemble, itm.Key)
                                                 i++
                                                 return true
                                         })
                                         So(i, ShouldEqual, len(data))
                                 }
                         })
                 }
         })
 }