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package websocket
import (
"bytes"
"fmt"
"io"
"io/ioutil"
"testing"
)
type nopCloser struct{ io.Writer }
func (nopCloser) Close() error { return nil }
func TestTruncWriter(t *testing.T) {
const data = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijlkmnopqrstuvwxyz987654321"
for n := 1; n <= 10; n++ {
var b bytes.Buffer
w := &truncWriter{w: nopCloser{&b}}
p := []byte(data)
for len(p) > 0 {
m := len(p)
if m > n {
m = n
}
w.Write(p[:m])
p = p[m:]
}
if b.String() != data[:len(data)-len(w.p)] {
t.Errorf("%d: %q", n, b.String())
}
}
}
func textMessages(num int) [][]byte {
messages := make([][]byte, num)
for i := 0; i < num; i++ {
msg := fmt.Sprintf("planet: %d, country: %d, city: %d, street: %d", i, i, i, i)
messages[i] = []byte(msg)
}
return messages
}
func BenchmarkWriteNoCompression(b *testing.B) {
w := ioutil.Discard
c := newTestConn(nil, w, false)
messages := textMessages(100)
b.ResetTimer()
for i := 0; i < b.N; i++ {
c.WriteMessage(TextMessage, messages[i%len(messages)])
}
b.ReportAllocs()
}
func BenchmarkWriteWithCompression(b *testing.B) {
w := ioutil.Discard
c := newTestConn(nil, w, false)
messages := textMessages(100)
c.enableWriteCompression = true
c.newCompressionWriter = compressNoContextTakeover
b.ResetTimer()
for i := 0; i < b.N; i++ {
c.WriteMessage(TextMessage, messages[i%len(messages)])
}
b.ReportAllocs()
}
func TestValidCompressionLevel(t *testing.T) {
c := newTestConn(nil, nil, false)
for _, level := range []int{minCompressionLevel - 1, maxCompressionLevel + 1} {
if err := c.SetCompressionLevel(level); err == nil {
t.Errorf("no error for level %d", level)
}
}
for _, level := range []int{minCompressionLevel, maxCompressionLevel} {
if err := c.SetCompressionLevel(level); err != nil {
t.Errorf("error for level %d", level)
}
}
}