bytes_test.go

// Copyright 2024 ByteDance Inc.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//     http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.

package bytespool

import (
	"bytes"
	"fmt"
	"testing"
)

func TestBytes(t *testing.T) {
	// Test basic functionality
	b := Bytes(5, 10)
	if len(b) != 5 {
		t.Fatalf("expected length 5, got %d", len(b))
	}
	if cap(b) != 10 {
		t.Fatalf("expected capacity 10, got %d", cap(b))
	}

	// Test zero length and capacity
	b = Bytes(0, 0)
	if len(b) != 0 || cap(b) != 0 {
		t.Fatalf("expected empty slice, got len=%d, cap=%d", len(b), cap(b))
	}

	// Test equal length and capacity
	b = Bytes(3, 3)
	if len(b) != 3 || cap(b) != 3 {
		t.Fatalf("expected len=3, cap=3, got len=%d, cap=%d", len(b), cap(b))
	}
}

var data []byte

const block1kb = 1024

func BenchmarkParallelDirtBytes(b *testing.B) {
	src := make([]byte, block1kb)
	for i := range src {
		src[i] = byte(i)
	}
	b.RunParallel(func(pb *testing.PB) {
		for pb.Next() {
			bs := Bytes(block1kb, block1kb)
			copy(bs, src)
			if !bytes.Equal(bs, src) {
				b.Fatalf("bytes not equal")
			}
		}
	})
}

func BenchmarkDirtBytes(b *testing.B) {
	for size := block1kb; size < block1kb*20; size += block1kb * 2 {
		b.Run(fmt.Sprintf("size=%dkb", size/block1kb), func(b *testing.B) {
			for i := 0; i < b.N; i++ {
				data = Bytes(size, size)
			}
		})
	}
}

func BenchmarkOriginBytes(b *testing.B) {
	for size := block1kb; size < block1kb*20; size += block1kb * 2 {
		b.Run(fmt.Sprintf("size=%dkb", size/block1kb), func(b *testing.B) {
			for i := 0; i < b.N; i++ {
				data = make([]byte, size)
			}
		})
	}
}