package buf_test import ( "crypto/rand" "io" "testing" "github.com/google/go-cmp/cmp" "v2ray.com/core/common" . "v2ray.com/core/common/buf" . "v2ray.com/ext/assert" ) func TestMultiBufferRead(t *testing.T) { assert := With(t) b1 := New() b1.WriteString("ab") b2 := New() b2.WriteString("cd") mb := MultiBuffer{b1, b2} bs := make([]byte, 32) _, nBytes := SplitBytes(mb, bs) assert(nBytes, Equals, 4) assert(bs[:nBytes], Equals, []byte("abcd")) } func TestMultiBufferAppend(t *testing.T) { assert := With(t) var mb MultiBuffer b := New() b.WriteString("ab") mb = append(mb, b) assert(mb.Len(), Equals, int32(2)) } func TestMultiBufferSliceBySizeLarge(t *testing.T) { lb := make([]byte, 8*1024) common.Must2(io.ReadFull(rand.Reader, lb)) mb := MergeBytes(nil, lb) mb, mb2 := SplitSize(mb, 1024) if mb2.Len() != 1024 { t.Error("expect length 1024, but got ", mb2.Len()) } if mb.Len() != 7*1024 { t.Error("expect length 7*1024, but got ", mb.Len()) } mb, mb3 := SplitSize(mb, 7*1024) if mb3.Len() != 7*1024 { t.Error("expect length 7*1024, but got", mb.Len()) } if !mb.IsEmpty() { t.Error("expect empty buffer, but got ", mb.Len()) } } func TestMultiBufferSplitFirst(t *testing.T) { b1 := New() b1.WriteString("b1") b2 := New() b2.WriteString("b2") b3 := New() b3.WriteString("b3") var mb MultiBuffer mb = append(mb, b1, b2, b3) mb, c1 := SplitFirst(mb) if diff := cmp.Diff(b1.String(), c1.String()); diff != "" { t.Error(diff) } mb, c2 := SplitFirst(mb) if diff := cmp.Diff(b2.String(), c2.String()); diff != "" { t.Error(diff) } mb, c3 := SplitFirst(mb) if diff := cmp.Diff(b3.String(), c3.String()); diff != "" { t.Error(diff) } if !mb.IsEmpty() { t.Error("expect empty buffer, but got ", mb.String()) } } func BenchmarkSplitBytes(b *testing.B) { var mb MultiBuffer raw := make([]byte, Size) b.ResetTimer() for i := 0; i < b.N; i++ { buffer := StackNew() buffer.Extend(Size) mb = append(mb, &buffer) mb, _ = SplitBytes(mb, raw) } }