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// Copyright 2018 The gVisor Authors.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
// +build race
package tests
import (
"testing"
"gvisor.dev/gvisor/pkg/state"
)
// faker calls itself whatever is in the name field.
type faker struct {
Name string
Fields []string
}
func (f *faker) StateTypeName() string {
return f.Name
}
func (f *faker) StateFields() []string {
return f.Fields
}
// fakerWithSaverLoader has all it needs.
type fakerWithSaverLoader struct {
faker
}
func (f *fakerWithSaverLoader) StateSave(m state.Sink) {}
func (f *fakerWithSaverLoader) StateLoad(m state.Source) {}
// fakerOther calls itself .. uh, itself?
type fakerOther string
func (f *fakerOther) StateTypeName() string {
return string(*f)
}
func (f *fakerOther) StateFields() []string {
return nil
}
func newFakerOther(name string) *fakerOther {
f := fakerOther(name)
return &f
}
// fakerOtherBadFields returns non-nil fields.
type fakerOtherBadFields string
func (f *fakerOtherBadFields) StateTypeName() string {
return string(*f)
}
func (f *fakerOtherBadFields) StateFields() []string {
return []string{string(*f)}
}
func newFakerOtherBadFields(name string) *fakerOtherBadFields {
f := fakerOtherBadFields(name)
return &f
}
// fakerOtherSaverLoader implements SaverLoader methods.
type fakerOtherSaverLoader string
func (f *fakerOtherSaverLoader) StateTypeName() string {
return string(*f)
}
func (f *fakerOtherSaverLoader) StateFields() []string {
return nil
}
func (f *fakerOtherSaverLoader) StateSave(m state.Sink) {}
func (f *fakerOtherSaverLoader) StateLoad(m state.Source) {}
func newFakerOtherSaverLoader(name string) *fakerOtherSaverLoader {
f := fakerOtherSaverLoader(name)
return &f
}
func TestRegisterPrimitives(t *testing.T) {
for _, typeName := range []string{
"int",
"int8",
"int16",
"int32",
"int64",
"uint",
"uintptr",
"uint8",
"uint16",
"uint32",
"uint64",
"float32",
"float64",
"complex64",
"complex128",
"string",
} {
t.Run("struct/"+typeName, func(t *testing.T) {
defer func() {
if r := recover(); r == nil {
t.Errorf("Registering type %q did not panic", typeName)
}
}()
state.Register(&faker{
Name: typeName,
})
})
t.Run("other/"+typeName, func(t *testing.T) {
defer func() {
if r := recover(); r == nil {
t.Errorf("Registering type %q did not panic", typeName)
}
}()
state.Register(newFakerOther(typeName))
})
}
}
func TestRegisterBad(t *testing.T) {
const (
goodName = "foo"
firstField = "a"
secondField = "b"
)
for name, object := range map[string]state.Type{
"non-struct-with-fields": newFakerOtherBadFields(goodName),
"non-struct-with-saverloader": newFakerOtherSaverLoader(goodName),
"struct-without-saverloader": &faker{Name: goodName},
"non-struct-duplicate-with-struct": newFakerOther((new(alreadyRegisteredStruct)).StateTypeName()),
"non-struct-duplicate-with-non-struct": newFakerOther((new(alreadyRegisteredOther)).StateTypeName()),
"struct-duplicate-with-struct": &fakerWithSaverLoader{faker{Name: (new(alreadyRegisteredStruct)).StateTypeName()}},
"struct-duplicate-with-non-struct": &fakerWithSaverLoader{faker{Name: (new(alreadyRegisteredOther)).StateTypeName()}},
"struct-with-empty-field": &fakerWithSaverLoader{faker{Name: goodName, Fields: []string{""}}},
"struct-with-empty-field-and-non-empty": &fakerWithSaverLoader{faker{Name: goodName, Fields: []string{firstField, ""}}},
"struct-with-duplicate-field": &fakerWithSaverLoader{faker{Name: goodName, Fields: []string{firstField, firstField}}},
"struct-with-duplicate-field-and-non-dup": &fakerWithSaverLoader{faker{Name: goodName, Fields: []string{firstField, secondField, firstField}}},
} {
t.Run(name, func(t *testing.T) {
defer func() {
if r := recover(); r == nil {
t.Errorf("Registering object %#v did not panic", object)
}
}()
state.Register(object)
})
}
}
func TestRegisterTypeOnlyStruct(t *testing.T) {
defer func() {
if r := recover(); r == nil {
t.Errorf("Register did not panic")
}
}()
state.Register((*typeOnlyEmptyStruct)(nil))
}
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