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|
package sbuf
import (
"bytes"
"crypto/rand"
"testing"
"golang.org/x/crypto/nacl/box"
)
var (
buf = &Buffer{}
testMessage1 = []byte("round and round and round we go, where we stop, no one knows")
testMessage2 = []byte("the deconstruction of falling stars")
)
func TestWrite(t *testing.T) {
n, err := buf.Write(testMessage1)
if err != nil {
t.Fatalf("%v", err)
}
if n != len(testMessage1) {
t.Fatalf("expected to write %d bytes, but only wrote %d bytes", len(testMessage1), n)
}
if buf.Len() != len(testMessage1) {
t.Fatalf("expected a length of %d, but have a length of %d", len(testMessage1), buf.Len())
}
if buf.Cap() != (len(testMessage1) * 2) {
t.Fatalf("expected a capacity of %d, but have a capacity of %d", len(testMessage1)*2, buf.Cap())
}
n, err = buf.Write(testMessage2)
if err != nil {
t.Fatalf("%v", err)
}
if n != len(testMessage2) {
t.Fatalf("expected to write %d bytes, but only wrote %d bytes", len(testMessage2), n)
}
n, err = buf.Write(testMessage2)
if err != nil {
t.Fatalf("%v", err)
}
if n != len(testMessage2) {
t.Fatalf("expected to write %d bytes, but only wrote %d bytes", len(testMessage2), n)
}
}
func TestRead(t *testing.T) {
var p = make([]byte, len(testMessage1))
n, err := buf.Read(p)
if err != nil {
t.Fatalf("%v", err)
}
if n != len(testMessage1) {
t.Fatalf("expected to read %d bytes, but only read %d bytes", len(testMessage1), n)
}
if !bytes.Equal(p, testMessage1) {
t.Fatalf("expected p='%s', but p='%s'", testMessage1, p)
}
p = make([]byte, len(testMessage2))
n, err = buf.Read(p)
if err != nil {
t.Fatalf("%v", err)
}
if n != len(testMessage2) {
t.Fatalf("expected to read %d bytes, but only read %d bytes", len(testMessage2), n)
}
if !bytes.Equal(p, testMessage2) {
t.Fatalf("expected p='%s', but p='%s'", testMessage2, p)
}
buf.Close()
n, err = buf.Read(p)
if err == nil {
t.Fatal("expected EOF")
} else if n != 0 {
t.Fatalf("expect n=0, but n=%d", n)
}
p = nil
n, err = buf.Read(p)
if err != nil {
t.Fatalf("%v", err)
} else if n != 0 {
t.Fatalf("expect n=0, but n=%d", n)
}
}
func TestShortRead(t *testing.T) {
tmpMessage := []byte("hello, world")
buf.Write(tmpMessage)
var p = make([]byte, len(testMessage1))
n, err := buf.Read(p)
if err != nil {
t.Fatalf("%v", err)
}
if n != len(tmpMessage) {
t.Fatalf("expected to read %d bytes, but only read %d bytes", len(testMessage1), n)
}
}
func TestNewBuffer(t *testing.T) {
buf := NewBuffer(32)
if len(buf.buf) != 0 {
t.Fatalf("expected new buffer length to be 0, have %d",
len(buf.buf))
}
if cap(buf.buf) != 32 {
t.Fatalf("expected new buffer capacity to be 0, have %d",
cap(buf.buf))
}
}
func TestNewBufferFrom(t *testing.T) {
p := make([]byte, len(testMessage1))
copy(p, testMessage1)
buf := NewBufferFrom(p)
if !bytes.Equal(buf.buf, testMessage1) {
t.Fatal("new buffer wasn't constructed properly")
}
}
func TestBytes(t *testing.T) {
p := make([]byte, len(testMessage1))
copy(p, testMessage1)
buf := NewBufferFrom(p)
out := buf.Bytes()
if buf.buf != nil {
t.Fatal("buffer was not closed")
}
if !bytes.Equal(out, testMessage1) {
t.Fatal("buffer did not return the right data")
}
out = buf.Bytes()
if out != nil {
t.Fatal("a closed buffer should return nil for Bytes")
}
}
func TestRWByte(t *testing.T) {
buf := NewBuffer(0)
c := byte(42)
err := buf.WriteByte(c)
if err != nil {
t.Fatalf("%v", err)
}
c, err = buf.ReadByte()
if err != nil {
t.Fatalf("%v", err)
}
if c != 42 {
t.Fatal("Expected 42, have %d", c)
}
_, err = buf.ReadByte()
if err == nil {
t.Fatal("Expected EOF")
}
}
func BenchmarkRead(b *testing.B) {
b.N = 2000
pub, priv, err := box.GenerateKey(rand.Reader)
if err != nil {
b.Fatalf("%v", err)
}
b.ReportAllocs()
for i := 0; i < b.N; i++ {
_, err := buf.Write(priv[:])
if err != nil {
b.Fatalf("%v", err)
}
_, err = buf.Write(pub[:])
if err != nil {
b.Fatalf("%v", err)
}
b.SetBytes(64)
}
}
func BenchmarkFixed(b *testing.B) {
pub, priv, err := box.GenerateKey(rand.Reader)
if err != nil {
b.Fatalf("%v", err)
}
buf = NewBuffer(64 * b.N)
b.ReportAllocs()
for i := 0; i < b.N; i++ {
_, err := buf.Write(priv[:])
if err != nil {
b.Fatalf("%v", err)
}
_, err = buf.Write(pub[:])
if err != nil {
b.Fatalf("%v", err)
}
b.SetBytes(64)
}
}
func BenchmarkWrite(b *testing.B) {
var pub = new([32]byte)
var priv = new([32]byte)
b.ReportAllocs()
for i := 0; i < b.N && buf.Len() >= 64; i++ {
_, err := buf.Read(priv[:])
if err != nil {
b.Fatalf("%v", err)
}
_, err = buf.Read(pub[:])
if err != nil {
b.Fatalf("%v", err)
}
b.SetBytes(64)
}
}
|
