1 // Copyright 2012 The Go Authors. All rights reserved. 2 // Use of this source code is governed by a BSD-style 3 // license that can be found in the LICENSE file. 4 5 package strconv_test 6 7 import ( 8 "runtime" 9 . "strconv" 10 "strings" 11 "testing" 12 ) 13 14 var ( 15 globalBuf [64]byte 16 nextToOne = "1.00000000000000011102230246251565404236316680908203125" + strings.Repeat("0", 10000) + "1" 17 18 mallocTest = []struct { 19 count int 20 desc string 21 fn func() 22 }{ 23 {0, `AppendInt(localBuf[:0], 123, 10)`, func() { 24 var localBuf [64]byte 25 AppendInt(localBuf[:0], 123, 10) 26 }}, 27 {0, `AppendInt(globalBuf[:0], 123, 10)`, func() { AppendInt(globalBuf[:0], 123, 10) }}, 28 {0, `AppendFloat(localBuf[:0], 1.23, 'g', 5, 64)`, func() { 29 var localBuf [64]byte 30 AppendFloat(localBuf[:0], 1.23, 'g', 5, 64) 31 }}, 32 {0, `AppendFloat(globalBuf[:0], 1.23, 'g', 5, 64)`, func() { AppendFloat(globalBuf[:0], 1.23, 'g', 5, 64) }}, 33 {0, `ParseFloat("123.45", 64)`, func() { ParseFloat("123.45", 64) }}, 34 {0, `ParseFloat("123.456789123456789", 64)`, func() { ParseFloat("123.456789123456789", 64) }}, 35 {0, `ParseFloat("1.000000000000000111022302462515654042363166809082031251", 64)`, func() { 36 ParseFloat("1.000000000000000111022302462515654042363166809082031251", 64) 37 }}, 38 {0, `ParseFloat("1.0000000000000001110223024625156540423631668090820312500...001", 64)`, func() { 39 ParseFloat(nextToOne, 64) 40 }}, 41 } 42 ) 43 44 func TestCountMallocs(t *testing.T) { 45 if testing.Short() { 46 t.Skip("skipping malloc count in short mode") 47 } 48 if runtime.GOMAXPROCS(0) > 1 { 49 t.Skip("skipping; GOMAXPROCS>1") 50 } 51 for _, mt := range mallocTest { 52 allocs := testing.AllocsPerRun(100, mt.fn) 53 if max := float64(mt.count); allocs > max { 54 t.Errorf("%s: %v allocs, want <=%v", mt.desc, allocs, max) 55 } 56 } 57 } 58
