Don't filter "Stop" error in raw interface.

filter/count/count_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 count
 
 import (
         "fmt"
         "testing"
 
@@ skipping 74 matching lines @@
 
                         fb.UnbreakFeatures("GetMulti")
 
                         So(ds.PutMulti(vals), ShouldBeNil)
 
                         die(ds.GetMulti(vals))
                         So(ctr.GetMulti.Errors(), ShouldEqual, 1)
                         So(ctr.GetMulti.Successes(), ShouldEqual, 1)
                         So(ctr.GetMulti.Total(), ShouldEqual, 2)
                 })
+
+                Convey(`datastore.Stop does not count as an error`, func() {
+                        fb.BreakFeatures(datastore.Stop, "GetMulti")
+
+                        So(ds.GetMulti(vals), ShouldBeNil)
+                        So(ctr.GetMulti.Successes(), ShouldEqual, 1)
+                        So(ctr.GetMulti.Errors(), ShouldEqual, 0)
+                        So(ctr.GetMulti.Total(), ShouldEqual, 1)
+                })
         })
 
         Convey("works for memcache", t, func() {
                 c, ctr := FilterMC(memory.Use(context.Background()))
                 So(c, ShouldNotBeNil)
                 So(ctr, ShouldNotBeNil)
                 mc := memcache.Get(c)
 
                 die(mc.Set(mc.NewItem("hello").SetValue([]byte("sup"))))
 
@@ skipping 104 matching lines @@
 
         // Using the other function.
         someCalledFunc(c)
         someCalledFunc(c)
 
         // Then we can see what happened!
         fmt.Printf("%d\n", counter.PutMulti.Successes())
         // Output:
         // 2
 }