| // Copyright 2018 The Go Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style |
| // license that can be found in the LICENSE file. |
| |
| package prototype |
| |
| import ( |
| "reflect" |
| "testing" |
| |
| pref "google.golang.org/protobuf/reflect/protoreflect" |
| ) |
| |
| // TestDescriptors tests that the implementations do not declare additional |
| // methods that do not exist on the interface types. |
| func TestDescriptors(t *testing.T) { |
| tests := []interface{}{ |
| []pref.FileDescriptor{placeholderFile{}, fileDesc{}}, |
| []pref.MessageDescriptor{placeholderMessage{}, standaloneMessage{}, messageDesc{}}, |
| []pref.FieldDescriptor{standaloneExtension{}, fieldDesc{}, extensionDesc{}}, |
| []pref.OneofDescriptor{oneofDesc{}}, |
| []pref.EnumDescriptor{placeholderEnum{}, standaloneEnum{}, enumDesc{}}, |
| []pref.EnumValueDescriptor{enumValueDesc{}}, |
| []pref.ServiceDescriptor{serviceDesc{}}, |
| []pref.MethodDescriptor{methodDesc{}}, |
| |
| []pref.FileImports{(*fileImports)(nil)}, |
| []pref.MessageDescriptors{(*messages)(nil)}, |
| []pref.Names{(*names)(nil)}, |
| []pref.FieldNumbers{(*numbers)(nil)}, |
| []pref.FieldRanges{(*fieldRanges)(nil)}, |
| []pref.FieldDescriptors{(*fields)(nil), (*oneofFields)(nil)}, |
| []pref.OneofDescriptors{(*oneofs)(nil)}, |
| []pref.ExtensionDescriptors{(*extensions)(nil)}, |
| []pref.EnumRanges{(*enumRanges)(nil)}, |
| []pref.EnumDescriptors{(*enums)(nil)}, |
| []pref.EnumValueDescriptors{(*enumValues)(nil)}, |
| []pref.ServiceDescriptors{(*services)(nil)}, |
| []pref.MethodDescriptors{(*methods)(nil)}, |
| } |
| |
| for _, tt := range tests { |
| v := reflect.ValueOf(tt) // []T where T is an interface |
| ifaceType := v.Type().Elem() |
| for i := 0; i < v.Len(); i++ { |
| implType := v.Index(i).Elem().Type() |
| |
| var hasName bool |
| for j := 0; j < implType.NumMethod(); j++ { |
| if name := implType.Method(j).Name; name == "Format" { |
| hasName = true |
| } else if _, ok := ifaceType.MethodByName(name); !ok { |
| t.Errorf("spurious method: %v.%v", implType, name) |
| } |
| } |
| if !hasName { |
| t.Errorf("missing method: %v.Format", implType) |
| } |
| } |
| } |
| } |