Add server/cache support to gaeconfig.

milo/appengine/settings/config_test.go

 // Copyright 2016 The LUCI Authors. All rights reserved.
 // Use of this source code is governed under the Apache License, Version 2.0
 // that can be found in the LICENSE file.
 
 package settings
 
 import (
         "strings"
         "testing"
 
         "github.com/luci/gae/impl/memory"
-        lucicfg "github.com/luci/luci-go/common/config"
         memcfg "github.com/luci/luci-go/common/config/impl/memory"
         "github.com/luci/luci-go/common/logging/gologger"
+        "github.com/luci/luci-go/luci_config/server/cfgclient/backend/testconfig"
+
         "golang.org/x/net/context"
 
         . "github.com/smartystreets/goconvey/convey"
 )
 
 func TestConfig(t *testing.T) {
         t.Parallel()
 
         Convey("Test Environment", t, func() {
                 c := memory.UseWithAppID(context.Background(), "dev~luci-milo")
                 c = gologger.StdConfig.Use(c)
+                c = testconfig.WithCommonClient(c, memcfg.New(mockedConfigs))
 
                 Convey("Send update", func() {
-                        c = lucicfg.SetImplementation(c, memcfg.New(mockedConfigs))
                         // Send update here
                         err := Update(c)
                         So(err, ShouldBeNil)
 
                         Convey("Check Project config updated", func() {
                                 p, err := GetProject(c, "foo")
                                 So(err, ShouldBeNil)
                                 So(p.ID, ShouldEqual, "foo")
                                 So(p.Readers, ShouldResemble, []string{"public", "foo@bar.com"})
                                 So(p.Writers, ShouldResemble, []string(nil))
                         })
 
                         Convey("Check Console config updated", func() {
                                 cs, err := GetConsole(c, "foo", "default")
                                 So(err, ShouldBeNil)
                                 So(cs.Name, ShouldEqual, "default")
                                 So(cs.RepoURL, ShouldEqual, "https://chromium.googlesource.com/foo/bar")
                         })
                 })
 
                 Convey("Reject duplicate configs.", func() {
                         mockedConfigs["projects/bar.git"] = memcfg.ConfigSet{"luci-milo.cfg": barCfg}
-                        c = lucicfg.SetImplementation(c, memcfg.New(mockedConfigs))
+
                         err := Update(c)
                         So(strings.HasPrefix(err.Error(), "Duplicate project ID"), ShouldEqual, true)
                 })
         })
 }
 
 var fooCfg = `
 ID: "foo"
 Readers: "public"
 Readers: "foo@bar.com"
@@ skipping 18 matching lines @@
 
 var barCfg = `
 ID: "foo"
 `
 
 var mockedConfigs = map[string]memcfg.ConfigSet{
         "projects/foo.git": {
                 "luci-milo.cfg": fooCfg,
         },
 }