1 // Protocol Buffers for Go with Gadgets 2 // 3 // Copyright (c) 2015, The GoGo Authors. All rights reserved. 4 // http://github.com/gogo/protobuf 5 // 6 // Redistribution and use in source and binary forms, with or without 7 // modification, are permitted provided that the following conditions are 8 // met: 9 // 10 // * Redistributions of source code must retain the above copyright 11 // notice, this list of conditions and the following disclaimer. 12 // * Redistributions in binary form must reproduce the above 13 // copyright notice, this list of conditions and the following disclaimer 14 // in the documentation and/or other materials provided with the 15 // distribution. 16 // 17 // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 18 // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 19 // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 20 // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 21 // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 22 // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 23 // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 24 // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 25 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 26 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 27 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 28 29 package issue34 30 31 import ( 32 "bytes" 33 "github.com/gogo/protobuf/proto" 34 "testing" 35 ) 36 37 func TestZeroLengthOptionalBytes(t *testing.T) { 38 roundtrip := func(f *Foo) *Foo { 39 data, err := proto.Marshal(f) 40 if err != nil { 41 panic(err) 42 } 43 newF := &Foo{} 44 err = proto.Unmarshal(data, newF) 45 if err != nil { 46 panic(err) 47 } 48 return newF 49 } 50 51 f := &Foo{} 52 roundtrippedF := roundtrip(f) 53 if roundtrippedF.Bar != nil { 54 t.Fatalf("should be nil") 55 } 56 57 f.Bar = []byte{} 58 roundtrippedF = roundtrip(f) 59 if roundtrippedF.Bar == nil { 60 t.Fatalf("should not be nil") 61 } 62 if len(roundtrippedF.Bar) != 0 { 63 t.Fatalf("should be empty") 64 } 65 } 66 67 func TestRepeatedOptional(t *testing.T) { 68 repeated := &FooWithRepeated{Bar: [][]byte{[]byte("a"), []byte("b")}} 69 data, err := proto.Marshal(repeated) 70 if err != nil { 71 panic(err) 72 } 73 optional := &Foo{} 74 err = proto.Unmarshal(data, optional) 75 if err != nil { 76 panic(err) 77 } 78 79 if !bytes.Equal(optional.Bar, []byte("b")) { 80 t.Fatalf("should return the last entry") 81 } 82 } 83