func check(t *testing.T, m extendable, fieldA float64, ext *proto.ExtensionDesc) {
if !proto.HasExtension(m, ext) {
t.Fatalf("expected extension to be set")
}
fieldA2Interface, err := proto.GetExtension(m, ext)
if err != nil {
panic(err)
}
fieldA2 := fieldA2Interface.(*float64)
if fieldA != *fieldA2 {
t.Fatalf("Expected %f got %f", fieldA, *fieldA2)
}
fieldA3Interface, err := proto.GetUnsafeExtension(m, ext.Field)
if err != nil {
panic(err)
}
fieldA3 := fieldA3Interface.(*float64)
if fieldA != *fieldA3 {
t.Fatalf("Expected %f got %f", fieldA, *fieldA3)
}
proto.ClearExtension(m, ext)
if proto.HasExtension(m, ext) {
t.Fatalf("expected extension to be cleared")
}
}
func TestExtensionsRoundTrip(t *testing.T) {
msg := &pb.MyMessage{}
ext1 := &pb.Ext{
Data: proto.String("hi"),
}
ext2 := &pb.Ext{
Data: proto.String("there"),
}
exists := proto.HasExtension(msg, pb.E_Ext_More)
if exists {
t.Error("Extension More present unexpectedly")
}
if err := proto.SetExtension(msg, pb.E_Ext_More, ext1); err != nil {
t.Error(err)
}
if err := proto.SetExtension(msg, pb.E_Ext_More, ext2); err != nil {
t.Error(err)
}
e, err := proto.GetExtension(msg, pb.E_Ext_More)
if err != nil {
t.Error(err)
}
x, ok := e.(*pb.Ext)
if !ok {
t.Errorf("e has type %T, expected testdata.Ext", e)
} else if *x.Data != "there" {
t.Errorf("SetExtension failed to overwrite, got %+v, not 'there'", x)
}
proto.ClearExtension(msg, pb.E_Ext_More)
if _, err = proto.GetExtension(msg, pb.E_Ext_More); err != proto.ErrMissingExtension {
t.Errorf("got %v, expected ErrMissingExtension", e)
}
if _, err := proto.GetExtension(msg, pb.E_X215); err == nil {
t.Error("expected bad extension error, got nil")
}
if err := proto.SetExtension(msg, pb.E_X215, 12); err == nil {
t.Error("expected extension err")
}
if err := proto.SetExtension(msg, pb.E_Ext_More, 12); err == nil {
t.Error("expected some sort of type mismatch error, got nil")
}
}