fix(pbuf): destroy misuse

pbuf/buffer_test.go

@@ -0,0 +1,65 @@
+package pbuf
+
+import (
+	"bytes"
+	"crypto/rand"
+	"io"
+	"runtime"
+	"testing"
+
+	"github.com/fumiama/orbyte"
+)
+
+func TestBuffer(t *testing.T) {
+	testBuffer(NewBuffer(nil), t)
+	testBuffer(NewBuffer(make([]byte, 0, 8192)), t)
+	testBuffer(ParseBuffer(bytes.NewBuffer(nil)), t)
+	testBuffer(ParseBuffer(bytes.NewBuffer(make([]byte, 0, 8192))), t)
+	testBuffer(InvolveBuffer(bytes.NewBuffer(nil)), t)
+	testBuffer(InvolveBuffer(bytes.NewBuffer(make([]byte, 0, 8192))), t)
+}
+
+func testBuffer(buf *orbyte.Item[bytes.Buffer], t *testing.T) {
+	if buf.Pointer().Len() != 4096 {
+		io.CopyN(buf.Pointer(), rand.Reader, 4096)
+		if buf.Pointer().Len() != 4096 {
+			t.Fatal("got", buf.Pointer().Len())
+		}
+	}
+
+	bufcp := buf.Copy()
+	if bufcp.Pointer().Len() != 4096 {
+		t.Fatal("got", bufcp.Pointer().Len())
+	}
+	if !bytes.Equal(bufcp.Pointer().Bytes(), buf.Pointer().Bytes()) {
+		t.Fatal("unexpected")
+	}
+
+	bufr := buf.Ref()
+	if bufr.Pointer().Len() != 4096 {
+		t.Fatal("got", bufr.Pointer().Len())
+	}
+	if !bytes.Equal(bufr.Pointer().Bytes(), buf.Pointer().Bytes()) {
+		t.Fatal("unexpected")
+	}
+	bufr.Destroy()
+
+	bufcp = bufcp.Trans()
+	if bufcp.Pointer().Len() != 4096 {
+		t.Fatal("got", bufcp.Pointer().Len())
+	}
+	if !bytes.Equal(bufcp.Pointer().Bytes(), buf.Pointer().Bytes()) {
+		t.Fatal("unexpected")
+	}
+	bufcp.Destroy()
+
+	runtime.GC()
+	runtime.Gosched()
+	runtime.GC()
+
+	out, in := bufferPool.p.CountItems()
+	t.Log(out, in)
+	if out != 0 {
+		t.Fail()
+	}
+}