Implement projection queries correctly.

impl/memory/datastore_query_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 (
         "bytes"
         "math"
         "testing"
@@ skipping 24 matching lines @@
                         // normally you can only get cursors from inside of the memory
                         // implementation, so this construction is just for testing.
                         start := queryCursor(bjoin(
                                 mkNum(2),
                                 serialize.ToBytes(dsS.IndexColumn{Property: "farnsworth"}),
                                 serialize.ToBytes(dsS.IndexColumn{Property: "__key__"}),
                                 serialize.ToBytes(prop(200)),
                                 serialize.ToBytes(prop(ds.NewKey("Foo", "id", 0, nil)))))
 
                         So(start.String(), ShouldEqual,
-                                `gYAAZzFdTeeb3d9zOxsAAF-v221Xy32_AIGHyIkAAUc32-AGabMAAA==`)
+                                `gYAAZzFdTeeb3d9zOxsAAF-v221Xy32_AIGHyIgAAUc32-AFabMAAA==`)
 
                         end := queryCursor(bjoin(
                                 mkNum(2),
                                 serialize.ToBytes(dsS.IndexColumn{Property: "farnsworth"}),
                                 serialize.ToBytes(dsS.IndexColumn{Property: "__key__"}),
                                 serialize.ToBytes(prop(3000)),
                                 serialize.ToBytes(prop(ds.NewKey("Foo", "zeta", 0, nil)))))
 
                         q = q.Start(start).End(end)
                         So(q, ShouldNotBeNil)
@@ skipping 349 matching lines @@
                         q := nq().Ancestor(key("thing", "wat"))
                         for i := 0; i < 100; i++ {
                                 q = q.Filter("something =", i)
                         }
                         //So(q.(*queryImpl).numComponents(), ShouldEqual, 101)
                         _, err := q.(*queryImpl).reduce("ns", false)
                         So(err, ShouldErrLike, "query is too large")
                 })
         })
 }