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// Copyright 2017 The Gorilla WebSocket Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package websocket
import (
"bytes"
"compress/flate"
"math/rand"
"testing"
)
var preparedMessageTests = []struct {
messageType int
isServer bool
enableWriteCompression bool
compressionLevel int
}{
// Server
{TextMessage, true, false, flate.BestSpeed},
{TextMessage, true, true, flate.BestSpeed},
{TextMessage, true, true, flate.BestCompression},
{PingMessage, true, false, flate.BestSpeed},
{PingMessage, true, true, flate.BestSpeed},
// Client
{TextMessage, false, false, flate.BestSpeed},
{TextMessage, false, true, flate.BestSpeed},
{TextMessage, false, true, flate.BestCompression},
{PingMessage, false, false, flate.BestSpeed},
{PingMessage, false, true, flate.BestSpeed},
}
func TestPreparedMessage(t *testing.T) {
for _, tt := range preparedMessageTests {
var data = []byte("this is a test")
var buf bytes.Buffer
c := newConn(fakeNetConn{Reader: nil, Writer: &buf}, tt.isServer, 1024, 1024)
if tt.enableWriteCompression {
c.newCompressionWriter = compressNoContextTakeover
}
c.SetCompressionLevel(tt.compressionLevel)
// Seed random number generator for consistent frame mask.
rand.Seed(1234)
if err := c.WriteMessage(tt.messageType, data); err != nil {
t.Fatal(err)
}
want := buf.String()
pm, err := NewPreparedMessage(tt.messageType, data)
if err != nil {
t.Fatal(err)
}
// Scribble on data to ensure that NewPreparedMessage takes a snapshot.
copy(data, "hello world")
// Seed random number generator for consistent frame mask.
rand.Seed(1234)
buf.Reset()
if err := c.WritePreparedMessage(pm); err != nil {
t.Fatal(err)
}
got := buf.String()
if got != want {
t.Errorf("write message != prepared message for %+v", tt)
}
}
}
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