Implement a server-side config service interface.

server/config/authority_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 config
+
+import (
+        "testing"
+
+        "github.com/luci/luci-go/server/auth"
+
+        . "github.com/smartystreets/goconvey/convey"
+)
+
+func TestAuthorityRPCTranslation(t *testing.T) {
+        t.Parallel()
+
+        Convey(`Testing authority RPC kind translation`, t, func() {
+                So(AsAnonymous.rpcAuthorityKind(), ShouldEqual, auth.NoAuth)
+                So(AsUser.rpcAuthorityKind(), ShouldEqual, auth.AsUser)
+                So(AsService.rpcAuthorityKind(), ShouldEqual, auth.AsSelf)
+                So(func() { Authority(-1).rpcAuthorityKind() }, ShouldPanic)
+        })
+}