68 lines
2 KiB
Go
68 lines
2 KiB
Go
// Copyright 2012 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 strconv_test
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/*
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gccgo does not pass this.
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import (
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"runtime"
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. "strconv"
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"strings"
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"testing"
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)
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var (
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globalBuf [64]byte
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nextToOne = "1.00000000000000011102230246251565404236316680908203125" + strings.Repeat("0", 10000) + "1"
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mallocTest = []struct {
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count int
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desc string
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fn func()
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}{
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// TODO(bradfitz): this might be 0, once escape analysis is better
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{1, `AppendInt(localBuf[:0], 123, 10)`, func() {
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var localBuf [64]byte
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AppendInt(localBuf[:0], 123, 10)
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}},
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{0, `AppendInt(globalBuf[:0], 123, 10)`, func() { AppendInt(globalBuf[:0], 123, 10) }},
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// TODO(bradfitz): this might be 0, once escape analysis is better
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{1, `AppendFloat(localBuf[:0], 1.23, 'g', 5, 64)`, func() {
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var localBuf [64]byte
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AppendFloat(localBuf[:0], 1.23, 'g', 5, 64)
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}},
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{0, `AppendFloat(globalBuf[:0], 1.23, 'g', 5, 64)`, func() { AppendFloat(globalBuf[:0], 1.23, 'g', 5, 64) }},
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{0, `ParseFloat("123.45", 64)`, func() { ParseFloat("123.45", 64) }},
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{0, `ParseFloat("123.456789123456789", 64)`, func() { ParseFloat("123.456789123456789", 64) }},
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{0, `ParseFloat("1.000000000000000111022302462515654042363166809082031251", 64)`, func() {
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ParseFloat("1.000000000000000111022302462515654042363166809082031251", 64)
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}},
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{0, `ParseFloat("1.0000000000000001110223024625156540423631668090820312500...001", 64)`, func() {
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ParseFloat(nextToOne, 64)
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}},
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}
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)
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func TestCountMallocs(t *testing.T) {
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defer runtime.GOMAXPROCS(runtime.GOMAXPROCS(1))
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for _, mt := range mallocTest {
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const N = 100
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memstats := new(runtime.MemStats)
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runtime.ReadMemStats(memstats)
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mallocs := 0 - memstats.Mallocs
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for i := 0; i < N; i++ {
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mt.fn()
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}
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runtime.ReadMemStats(memstats)
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mallocs += memstats.Mallocs
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if mallocs/N > uint64(mt.count) {
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t.Errorf("%s: expected %d mallocs, got %d", mt.desc, mt.count, mallocs/N)
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}
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}
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}
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*/
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