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// 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 proto_test

import (
	"flag"
	"fmt"
	"reflect"
	"testing"

	"google.golang.org/protobuf/proto"
)

// The results of these microbenchmarks are unlikely to correspond well
// to real world performance. They are mainly useful as a quick check to
// detect unexpected regressions and for profiling specific cases.

var (
	allowPartial = flag.Bool("allow_partial", false, "set AllowPartial")
)

// BenchmarkEncode benchmarks encoding all the test messages.
func BenchmarkEncode(b *testing.B) {
	for _, test := range testValidMessages {
		for _, want := range test.decodeTo {
			opts := proto.MarshalOptions{AllowPartial: *allowPartial}
			b.Run(fmt.Sprintf("%s (%T)", test.desc, want), func(b *testing.B) {
				b.RunParallel(func(pb *testing.PB) {
					for pb.Next() {
						_, err := opts.Marshal(want)
						if err != nil && !test.partial {
							b.Fatal(err)
						}
					}
				})
			})
		}
	}
}

// BenchmarkDecode benchmarks decoding all the test messages.
func BenchmarkDecode(b *testing.B) {
	for _, test := range testValidMessages {
		for _, want := range test.decodeTo {
			opts := proto.UnmarshalOptions{AllowPartial: *allowPartial}
			b.Run(fmt.Sprintf("%s (%T)", test.desc, want), func(b *testing.B) {
				b.RunParallel(func(pb *testing.PB) {
					for pb.Next() {
						m := reflect.New(reflect.TypeOf(want).Elem()).Interface().(proto.Message)
						err := opts.Unmarshal(test.wire, m)
						if err != nil && !test.partial {
							b.Fatal(err)
						}
					}
				})
			})
		}
	}
}