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// Copyright 2021 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 nullable
import (
"reflect"
"testing"
"github.com/google/go-cmp/cmp"
"google.golang.org/protobuf/proto"
"google.golang.org/protobuf/reflect/protoreflect"
"google.golang.org/protobuf/runtime/protoimpl"
"google.golang.org/protobuf/testing/protocmp"
)
func Test(t *testing.T) {
for _, mt := range []protoreflect.MessageType{
protoimpl.X.ProtoMessageV2Of((*Proto2)(nil)).ProtoReflect().Type(),
protoimpl.X.ProtoMessageV2Of((*Proto3)(nil)).ProtoReflect().Type(),
} {
t.Run(string(mt.Descriptor().FullName()), func(t *testing.T) {
testEmptyMessage(t, mt.Zero(), false)
testEmptyMessage(t, mt.New(), true)
//testMethods(t, mt)
})
}
}
var methodTestProtos = []protoreflect.MessageType{
protoimpl.X.ProtoMessageV2Of((*Methods)(nil)).ProtoReflect().Type(),
}
func TestMethods(t *testing.T) {
for _, mt := range methodTestProtos {
t.Run(string(mt.Descriptor().FullName()), func(t *testing.T) {
testMethods(t, mt)
})
}
}
func testMethods(t *testing.T, mt protoreflect.MessageType) {
m1 := mt.New()
populated := testPopulateMessage(t, m1, 2)
b, err := proto.Marshal(m1.Interface())
if err != nil {
t.Errorf("proto.Marshal error: %v", err)
}
if populated && len(b) == 0 {
t.Errorf("len(proto.Marshal) = 0, want >0")
}
m2 := mt.New()
if err := proto.Unmarshal(b, m2.Interface()); err != nil {
t.Errorf("proto.Unmarshal error: %v", err)
}
if diff := cmp.Diff(m1.Interface(), m2.Interface(), protocmp.Transform()); diff != "" {
t.Errorf("message mismatch:\n%v", diff)
}
proto.Reset(m2.Interface())
testEmptyMessage(t, m2, true)
proto.Merge(m2.Interface(), m1.Interface())
if diff := cmp.Diff(m1.Interface(), m2.Interface(), protocmp.Transform()); diff != "" {
t.Errorf("message mismatch:\n%v", diff)
}
proto.Merge(mt.New().Interface(), mt.Zero().Interface())
}
func testEmptyMessage(t *testing.T, m protoreflect.Message, wantValid bool) {
numFields := func(m protoreflect.Message) (n int) {
m.Range(func(protoreflect.FieldDescriptor, protoreflect.Value) bool {
n++
return true
})
return n
}
md := m.Descriptor()
if gotValid := m.IsValid(); gotValid != wantValid {
t.Errorf("%v.IsValid = %v, want %v", md.FullName(), gotValid, wantValid)
}
m.Range(func(fd protoreflect.FieldDescriptor, v protoreflect.Value) bool {
t.Errorf("%v.Range iterated over field %v, want no iteration", md.FullName(), fd.Name())
return true
})
fds := md.Fields()
for i := 0; i < fds.Len(); i++ {
fd := fds.Get(i)
if m.Has(fd) {
t.Errorf("%v.Has(%v) = true, want false", md.FullName(), fd.Name())
}
v := m.Get(fd)
switch {
case fd.IsList():
if n := v.List().Len(); n > 0 {
t.Errorf("%v.Get(%v).List().Len() = %v, want 0", md.FullName(), fd.Name(), n)
}
ls := m.NewField(fd).List()
if fd.Message() != nil {
if n := numFields(ls.NewElement().Message()); n > 0 {
t.Errorf("%v.NewField(%v).List().NewElement().Message().Len() = %v, want 0", md.FullName(), fd.Name(), n)
}
}
case fd.IsMap():
if n := v.Map().Len(); n > 0 {
t.Errorf("%v.Get(%v).Map().Len() = %v, want 0", md.FullName(), fd.Name(), n)
}
ms := m.NewField(fd).Map()
if fd.MapValue().Message() != nil {
if n := numFields(ms.NewValue().Message()); n > 0 {
t.Errorf("%v.NewField(%v).Map().NewValue().Message().Len() = %v, want 0", md.FullName(), fd.Name(), n)
}
}
case fd.Message() != nil:
if n := numFields(v.Message()); n > 0 {
t.Errorf("%v.Get(%v).Message().Len() = %v, want 0", md.FullName(), fd.Name(), n)
}
if n := numFields(m.NewField(fd).Message()); n > 0 {
t.Errorf("%v.NewField(%v).Message().Len() = %v, want 0", md.FullName(), fd.Name(), n)
}
default:
if !reflect.DeepEqual(v.Interface(), fd.Default().Interface()) {
t.Errorf("%v.Get(%v) = %v, want %v", md.FullName(), fd.Name(), v, fd.Default())
}
m.NewField(fd) // should not panic
}
}
ods := md.Oneofs()
for i := 0; i < ods.Len(); i++ {
od := ods.Get(i)
if fd := m.WhichOneof(od); fd != nil {
t.Errorf("%v.WhichOneof(%v) = %v, want nil", md.FullName(), od.Name(), fd.Name())
}
}
if b := m.GetUnknown(); b != nil {
t.Errorf("%v.GetUnknown() = %v, want nil", md.FullName(), b)
}
}
func testPopulateMessage(t *testing.T, m protoreflect.Message, depth int) bool {
if depth == 0 {
return false
}
md := m.Descriptor()
fds := md.Fields()
var populatedMessage bool
for i := 0; i < fds.Len(); i++ {
populatedField := true
fd := fds.Get(i)
m.Clear(fd) // should not panic
switch {
case fd.IsList():
ls := m.Mutable(fd).List()
if fd.Message() == nil {
ls.Append(scalarValue(fd.Kind()))
} else {
populatedField = testPopulateMessage(t, ls.AppendMutable().Message(), depth-1)
}
case fd.IsMap():
ms := m.Mutable(fd).Map()
if fd.MapValue().Message() == nil {
ms.Set(
scalarValue(fd.MapKey().Kind()).MapKey(),
scalarValue(fd.MapValue().Kind()),
)
} else {
// NOTE: Map.Mutable does not work with non-nullable fields.
m2 := ms.NewValue().Message()
populatedField = testPopulateMessage(t, m2, depth-1)
ms.Set(
scalarValue(fd.MapKey().Kind()).MapKey(),
protoreflect.ValueOfMessage(m2),
)
}
case fd.Message() != nil:
populatedField = testPopulateMessage(t, m.Mutable(fd).Message(), depth-1)
default:
m.Set(fd, scalarValue(fd.Kind()))
}
if populatedField && !m.Has(fd) {
t.Errorf("%v.Has(%v) = false, want true", md.FullName(), fd.Name())
}
populatedMessage = populatedMessage || populatedField
}
m.SetUnknown(m.GetUnknown()) // should not panic
return populatedMessage
}
func scalarValue(k protoreflect.Kind) protoreflect.Value {
switch k {
case protoreflect.BoolKind:
return protoreflect.ValueOfBool(true)
case protoreflect.Int32Kind, protoreflect.Sint32Kind, protoreflect.Sfixed32Kind:
return protoreflect.ValueOfInt32(-32)
case protoreflect.Int64Kind, protoreflect.Sint64Kind, protoreflect.Sfixed64Kind:
return protoreflect.ValueOfInt64(-64)
case protoreflect.Uint32Kind, protoreflect.Fixed32Kind:
return protoreflect.ValueOfUint32(32)
case protoreflect.Uint64Kind, protoreflect.Fixed64Kind:
return protoreflect.ValueOfUint64(64)
case protoreflect.FloatKind:
return protoreflect.ValueOfFloat32(32.32)
case protoreflect.DoubleKind:
return protoreflect.ValueOfFloat64(64.64)
case protoreflect.StringKind:
return protoreflect.ValueOfString(string("string"))
case protoreflect.BytesKind:
return protoreflect.ValueOfBytes([]byte("bytes"))
case protoreflect.EnumKind:
return protoreflect.ValueOfEnum(1)
default:
panic("unknown kind: " + k.String())
}
}
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