Commit 0577ba8

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Lines changed: 1 addition & 1 deletion

Original file line number	Diff line number	Diff line change
`@@ -73,7 +73,7 @@ ps:白天上班,晚上更新,尽量日更,比心`
`73`	`73`
`74`	`74`	`[第32章单元测试](https://github.com/java-aodeng/golang-examples/blob/master/go-32/function_test.go)`
`75`	`75`
`76`		`-第33章 Benchmark`
	`76`	`+[第33章 Benchmark](https://github.com/java-aodeng/golang-examples/blob/master/go-33/benchmark_test.go)`
`77`	`77`
`78`	`78`	`第34章 BDD`
`79`	`79`

Lines changed: 45 additions & 0 deletions

Original file line number	Diff line number	Diff line change
`@@ -0,0 +1,45 @@`
	`1`	`+package go_33`
	`2`	`+`
	`3`	`+import (`
	`4`	`+ "bytes"`
	`5`	`+ "testing"`
	`6`	`+)`
	`7`	`+`
	`8`	`+/*`
	`9`	`+Benchmark`
	`10`	`+用于一些性能测试中,方法名字以Benchmark为前缀`
	`11`	`+参数使用testing.B`
	`12`	`+`
	`13`	`+func BenchmarkConcatStringByBytesBuffer(b *testing.B) {`
	`14`	`+ //与性能测试无关代码`
	`15`	`+ b.ResetTimer()`
	`16`	`+ for i := 0; i < b.N; i++ {`
	`17`	`+ //测试代码`
	`18`	`+ }`
	`19`	`+ b.StopTimer()`
	`20`	`+ //与性能测试无关代码`
	`21`	`+}`
	`22`	`+`
	`23`	`+*/`
	`24`	`+`
	`25`	`+func BenchmarkConcatStringByBytesBuffer(b *testing.B) {`
	`26`	`+ elems := []string{"1", "2", "3", "4", "5"}`
	`27`	`+ b.ResetTimer()`
	`28`	`+ for i := 0; i < b.N; i++ {`
	`29`	`+ var buf bytes.Buffer`
	`30`	`+`
	`31`	`+ for _, elem := range elems {`
	`32`	`+ buf.WriteString(elem)`
	`33`	`+`
	`34`	`+ }`
	`35`	`+ }`
	`36`	`+ b.StopTimer()`
	`37`	`+`
	`38`	`+}`
	`39`	`+`
	`40`	`+/*`
	`41`	`+//运行结果`
	`42`	`+goos: windows`
	`43`	`+goarch: amd64`
	`44`	`+BenchmarkConcatStringByBytesBuffer-4 10000000 142 ns/op`
	`45`	`+PASS*/`

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