Implement a server-side config service interface.

luci_config/server/cfgclient/naming_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 cfgclient
+
+import (
+        "testing"
+
+        "github.com/luci/gae/impl/memory"
+
+        "golang.org/x/net/context"
+
+        . "github.com/smartystreets/goconvey/convey"
+)
+
+func TestServiceConfigSet(t *testing.T) {
+        t.Parallel()
+
+        Convey(`With a testing AppEngine context`, t, func() {
+                c := memory.Use(context.Background())
+
+                Convey(`Can get the current service config set.`, func() {
+                        So(CurrentServiceConfigSet(c), ShouldEqual, "services/app")
+                })
+        })
+}