Butler stream servers can generate client address.

logdog/client/butler/butler_test.go

 // Copyright 2015 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 butler
 
 import (
         "bytes"
         "errors"
         "fmt"
@@ skipping 175 matching lines @@
         onNext  func()
         streamC chan *testStream
 }
 
 func newTestStreamServer() *testStreamServer {
         return &testStreamServer{
                 streamC: make(chan *testStream),
         }
 }
 
-func (tss *testStreamServer) Listen() error {
-        return tss.err
-}
+func (tss *testStreamServer) Address() string { return "test" }
+
+func (tss *testStreamServer) Listen() error { return tss.err }
 
 func (tss *testStreamServer) Next() (io.ReadCloser, *streamproto.Properties) {
         if tss.onNext != nil {
                 tss.onNext()
         }
 
         ts, ok := <-tss.streamC
         if !ok {
                 return nil, nil
         }
@@ skipping 389 matching lines @@
                         tss.onNext = func() {
                                 panic("test panic")
                         }
 
                         b := mkb(c, conf)
                         b.AddStreamServer(tss)
                         So(b.Wait(), ShouldErrLike, "test panic")
                 })
         })
 }