1 // Copyright 2013 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 go1 6 7 // benchmark based on fmt/fmt_test.go 8 9 import ( 10 "bytes" 11 "fmt" 12 "testing" 13 ) 14 15 func BenchmarkFmtFprintfEmpty(b *testing.B) { 16 var buf bytes.Buffer 17 for i := 0; i < b.N; i++ { 18 fmt.Fprintf(&buf, "") 19 } 20 } 21 22 func BenchmarkFmtFprintfString(b *testing.B) { 23 var buf bytes.Buffer 24 for i := 0; i < b.N; i++ { 25 buf.Reset() 26 fmt.Fprintf(&buf, "%s", "hello") 27 } 28 } 29 30 func BenchmarkFmtFprintfInt(b *testing.B) { 31 var buf bytes.Buffer 32 for i := 0; i < b.N; i++ { 33 buf.Reset() 34 fmt.Fprintf(&buf, "%d", 5) 35 } 36 } 37 38 func BenchmarkFmtFprintfIntInt(b *testing.B) { 39 var buf bytes.Buffer 40 for i := 0; i < b.N; i++ { 41 buf.Reset() 42 fmt.Fprintf(&buf, "%d %d", 5, 6) 43 } 44 } 45 46 func BenchmarkFmtFprintfPrefixedInt(b *testing.B) { 47 var buf bytes.Buffer 48 for i := 0; i < b.N; i++ { 49 buf.Reset() 50 fmt.Fprintf(&buf, "This is some meaningless prefix text that needs to be scanned %d", 6) 51 } 52 } 53 54 func BenchmarkFmtFprintfFloat(b *testing.B) { 55 var buf bytes.Buffer 56 for i := 0; i < b.N; i++ { 57 buf.Reset() 58 fmt.Fprintf(&buf, "%g", 5.23184) 59 } 60 } 61 62 func BenchmarkFmtManyArgs(b *testing.B) { 63 var buf bytes.Buffer 64 for i := 0; i < b.N; i++ { 65 buf.Reset() 66 fmt.Fprintf(&buf, "%2d/%2d/%2d %d:%d:%d %s %s\n", 3, 4, 5, 11, 12, 13, "hello", "world") 67 } 68 } 69
