110 lines
2.2 KiB
Go
110 lines
2.2 KiB
Go
// Copyright 2011 The Go Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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package gob
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import (
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"bytes"
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"io"
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"os"
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"runtime"
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"testing"
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)
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type Bench struct {
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A int
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B float64
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C string
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D []byte
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}
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func benchmarkEndToEnd(r io.Reader, w io.Writer, b *testing.B) {
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b.StopTimer()
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enc := NewEncoder(w)
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dec := NewDecoder(r)
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bench := &Bench{7, 3.2, "now is the time", []byte("for all good men")}
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b.StartTimer()
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for i := 0; i < b.N; i++ {
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if enc.Encode(bench) != nil {
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panic("encode error")
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}
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if dec.Decode(bench) != nil {
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panic("decode error")
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}
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}
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}
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func BenchmarkEndToEndPipe(b *testing.B) {
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r, w, err := os.Pipe()
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if err != nil {
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b.Fatal("can't get pipe:", err)
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}
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benchmarkEndToEnd(r, w, b)
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}
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func BenchmarkEndToEndByteBuffer(b *testing.B) {
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var buf bytes.Buffer
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benchmarkEndToEnd(&buf, &buf, b)
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}
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func TestCountEncodeMallocs(t *testing.T) {
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if testing.Short() {
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t.Skip("skipping malloc count in short mode")
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}
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if runtime.GOMAXPROCS(0) > 1 {
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t.Skip("skipping; GOMAXPROCS>1")
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}
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const N = 1000
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var buf bytes.Buffer
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enc := NewEncoder(&buf)
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bench := &Bench{7, 3.2, "now is the time", []byte("for all good men")}
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allocs := testing.AllocsPerRun(N, func() {
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err := enc.Encode(bench)
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if err != nil {
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t.Fatal("encode:", err)
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}
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})
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if allocs != 0 {
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t.Fatalf("mallocs per encode of type Bench: %v; wanted 0\n", allocs)
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}
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}
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func TestCountDecodeMallocs(t *testing.T) {
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if testing.Short() {
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t.Skip("skipping malloc count in short mode")
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}
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if runtime.GOMAXPROCS(0) > 1 {
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t.Skip("skipping; GOMAXPROCS>1")
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}
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const N = 1000
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var buf bytes.Buffer
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enc := NewEncoder(&buf)
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bench := &Bench{7, 3.2, "now is the time", []byte("for all good men")}
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// Fill the buffer with enough to decode
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testing.AllocsPerRun(N, func() {
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err := enc.Encode(bench)
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if err != nil {
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t.Fatal("encode:", err)
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}
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})
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dec := NewDecoder(&buf)
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allocs := testing.AllocsPerRun(N, func() {
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*bench = Bench{}
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err := dec.Decode(&bench)
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if err != nil {
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t.Fatal("decode:", err)
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}
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})
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if allocs != 3 {
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t.Fatalf("mallocs per decode of type Bench: %v; wanted 3\n", allocs)
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}
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}
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