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bufferpool_test.go
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bufferpool_test.go
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// Copyright 2013 The Bufferpool Authors. All rights reserved.
// Use of this source code is governed by the BSD 2-Clause license,
// which can be found in the LICENSE file.
package bufferpool_test
import (
"bytes"
"fmt"
"testing"
"github.com/pushrax/bufferpool"
)
func ExampleNew() {
bp := bufferpool.New(10, 255)
dogBuffer := bp.Take()
dogBuffer.WriteString("Dog!")
bp.Give(dogBuffer)
catBuffer := bp.Take() // dogBuffer is reused and reset.
catBuffer.WriteString("Cat!")
fmt.Println(catBuffer)
// Output:
// Cat!
}
func TestTakeFromEmpty(t *testing.T) {
bp := bufferpool.New(1, 1)
poolBuf := bp.Take()
if !bytes.Equal(poolBuf.Bytes(), []byte("")) {
t.Fatalf("Buffer from empty bufferpool was allocated incorrectly.")
}
}
func TestTakeFromFilled(t *testing.T) {
bp := bufferpool.New(1, 1)
origBuf := bytes.NewBuffer([]byte("X"))
bp.Give(origBuf)
reusedBuf := bp.Take()
if !bytes.Equal(reusedBuf.Bytes(), []byte("")) {
t.Fatalf("Buffer from filled bufferpool was recycled incorrectly.")
}
// Compare addresses of the first element in the underlying slice.
if &origBuf.Bytes()[:1][0] != &reusedBuf.Bytes()[:1][0] {
t.Fatalf("Recycled buffer points at different address.")
}
}
func TestSliceSemantics(t *testing.T) {
bp := bufferpool.New(1, 8)
buf := bp.Take()
buf.WriteString("abc")
bp.Give(buf)
buf2 := bp.TakeSlice()
if !bytes.Equal(buf2[:3], []byte("abc")) {
t.Fatalf("Buffer from filled bufferpool was recycled incorrectly.")
}
}