go bench_test 源码
golang bench_test 代码
文件路径：/src/os/exec/bench_test.go
// Copyright 2019 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 exec
import (
"testing"
)
func BenchmarkExecHostname(b *testing.B) {
b.ReportAllocs()
path, err := LookPath("hostname")
if err != nil {
b.Fatalf("could not find hostname: %v", err)
}
b.ResetTimer()
for i := 0; i < b.N; i++ {
if err := Command(path).Run(); err != nil {
b.Fatalf("hostname: %v", err)
}
}
}
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