Fix bugs in service/datastore

impl/memory/datastore_query_execution_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 (
         "fmt"
         "strings"
         "testing"
@@ skipping 120 matching lines @@
                         },
                         expect: []qExpect{
                                 {q: nq("Kind"), get: stage1Data[:4]},
 
                                 {q: nq("Kind").Offset(2).Limit(1), get: []ds.PropertyMap{
                                         stage1Data[2],
                                 }},
 
                                 {q: nq("Missing"), get: []ds.PropertyMap{}},
 
-                                {q: nq("Missing").Lt("Id", 2).Gt("Id", 2), get: []ds.PropertyMap{}},
-
                                 {q: nq("Missing").Eq("Bogus", 3), get: []ds.PropertyMap{}},
 
                                 {q: nq("Kind").Eq("Extra", "waffle"), get: []ds.PropertyMap{
                                         stage1Data[2], stage1Data[3],
                                 }},
 
                                 // get ziggy with it
                                 {q: nq("Kind").Eq("Extra", "waffle").Eq("Val", 100), get: []ds.PropertyMap{
                                         stage1Data[2],
                                 }},
@@ skipping 312 matching lines @@
                 count, err := data.Count(q)
                 So(err, ShouldErrLike, "Insufficient indexes")
 
                 testing.AutoIndex(true)
 
                 count, err = data.Count(q)
                 So(err, ShouldBeNil)
                 So(count, ShouldEqual, 2)
         })
 }