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recorder.go
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recorder.go
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// Copyright (C) 2015 Tim Retout <tim@retout.co.uk>
//
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU Affero General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU Affero General Public License for more details.
//
// You should have received a copy of the GNU Affero General Public License
// along with this program. If not, see <http://www.gnu.org/licenses/>.
// Package nntptest provides utilities for NNTP testing.
package nntptest
import "bytes"
// ResponseRecorder is an implementation of nntp.ResponseWriter that
// records its mutations for later inspection in tests.
type ResponseRecorder struct {
Code int
Body *bytes.Buffer
wroteHeader bool
}
// NewRecorder returns an initialized ResponseRecorder.
func NewRecorder() *ResponseRecorder {
return &ResponseRecorder{
Body: new(bytes.Buffer),
Code: 403,
}
}
// Write always succeeds and writes to rw.Body, if not nil.
func (rw *ResponseRecorder) Write(buf []byte) (int, error) {
if !rw.wroteHeader {
rw.WriteHeader(403)
return 0, nil
}
if rw.Body != nil {
rw.Body.Write(buf)
}
return len(buf), nil
}
// WriteHeader sets rw.Code.
func (rw *ResponseRecorder) WriteHeader(code int) {
if !rw.wroteHeader {
rw.Code = code
}
rw.wroteHeader = true
}