1 package descriptor_test 2 3 import ( 4 "fmt" 5 "testing" 6 7 "github.com/golang/protobuf/descriptor" 8 tpb "github.com/golang/protobuf/proto/testdata" 9 protobuf "github.com/golang/protobuf/protoc-gen-go/descriptor" 10 ) 11 12 func TestMessage(t *testing.T) { 13 var msg *protobuf.DescriptorProto 14 fd, md := descriptor.ForMessage(msg) 15 if pkg, want := fd.GetPackage(), "google.protobuf"; pkg != want { 16 t.Errorf("descriptor.ForMessage(%T).GetPackage() = %q; want %q", msg, pkg, want) 17 } 18 if name, want := md.GetName(), "DescriptorProto"; name != want { 19 t.Fatalf("descriptor.ForMessage(%T).GetName() = %q; want %q", msg, name, want) 20 } 21 } 22 23 func Example_Options() { 24 var msg *tpb.MyMessageSet 25 _, md := descriptor.ForMessage(msg) 26 if md.GetOptions().GetMessageSetWireFormat() { 27 fmt.Printf("%v uses option message_set_wire_format.\n", md.GetName()) 28 } 29 30 // Output: 31 // MyMessageSet uses option message_set_wire_format. 32 } 33
