Function TestGetExtensionForIncompleteDesc

proto/extensions_test.go:79–166

(t *testing.T)

}

func TestGetExtensionForIncompleteDesc(t *testing.T) {
	msg := &pb.MyMessage{Count: proto.Int32(0)}
	extdesc1 := &proto.ExtensionDesc{
		ExtendedType:  (*pb.MyMessage)(nil),
		ExtensionType: (*bool)(nil),
		Field:         123456789,
		Name:          "a.b",
		Tag:           "varint,123456789,opt",
	}
	ext1 := proto.Bool(true)
	if err := proto.SetExtension(msg, extdesc1, ext1); err != nil {
		t.Fatalf("Could not set ext1: %s", err)
	}
	extdesc2 := &proto.ExtensionDesc{
		ExtendedType:  (*pb.MyMessage)(nil),
		ExtensionType: ([]byte)(nil),
		Field:         123456790,
		Name:          "a.c",
		Tag:           "bytes,123456790,opt",
	}
	ext2 := []byte{0, 1, 2, 3, 4, 5, 6, 7}
	if err := proto.SetExtension(msg, extdesc2, ext2); err != nil {
		t.Fatalf("Could not set ext2: %s", err)
	}
	extdesc3 := &proto.ExtensionDesc{
		ExtendedType:  (*pb.MyMessage)(nil),
		ExtensionType: (*pb.Ext)(nil),
		Field:         123456791,
		Name:          "a.d",
		Tag:           "bytes,123456791,opt",
	}
	ext3 := &pb.Ext{Data: proto.String("foo")}
	if err := proto.SetExtension(msg, extdesc3, ext3); err != nil {
		t.Fatalf("Could not set ext3: %s", err)
	}

	b, err := proto.Marshal(msg)
	if err != nil {
		t.Fatalf("Could not marshal msg: %v", err)
	}
	if err := proto.Unmarshal(b, msg); err != nil {
		t.Fatalf("Could not unmarshal into msg: %v", err)
	}

	var expected proto.Buffer
	if err := expected.EncodeVarint(uint64((extdesc1.Field << 3) | proto.WireVarint)); err != nil {
		t.Fatalf("failed to compute expected prefix for ext1: %s", err)
	}
	if err := expected.EncodeVarint(1 /* bool true */); err != nil {
		t.Fatalf("failed to compute expected value for ext1: %s", err)
	}

	if b, err := proto.GetExtension(msg, &proto.ExtensionDesc{Field: extdesc1.Field}); err != nil {
		t.Fatalf("Failed to get raw value for ext1: %s", err)
	} else if !reflect.DeepEqual(b, expected.Bytes()) {
		t.Fatalf("Raw value for ext1: got %v, want %v", b, expected.Bytes())
	}