Subversion Repositories openrisc

// Copyright 2011 The Go 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 runtime_test

import "testing"

const N = 20

func BenchmarkAppend(b *testing.B) {

        b.StopTimer()

        x := make([]int, 0, N)

        b.StartTimer()

        for i := 0; i < b.N; i++ {

                x = x[0:0]

                for j := 0; j < N; j++ {

                        x = append(x, j)

                }

        }

}

func BenchmarkAppendSpecialCase(b *testing.B) {

        b.StopTimer()

        x := make([]int, 0, N)

        b.StartTimer()

        for i := 0; i < b.N; i++ {

                x = x[0:0]

                for j := 0; j < N; j++ {

                        if len(x) < cap(x) {

                                x = x[:len(x)+1]

                                x[len(x)-1] = j

                        } else {

                                x = append(x, j)

                        }

                }

        }

}

var x []int

func f() int {

        x[:1][0] = 3

        return 2

}

func TestSideEffectOrder(t *testing.T) {

        x = make([]int, 0, 10)

        x = append(x, 1, f())

        if x[0] != 1 || x[1] != 2 {

                t.Error("append failed: ", x[0], x[1])

        }

}