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|
package state
import (
"context"
"crypto"
"crypto/ed25519"
"crypto/rand"
"fmt"
"reflect"
"testing"
"time"
db "git.sigsum.org/log-go/pkg/db/mocks"
"git.sigsum.org/log-go/pkg/state/mocks"
"git.sigsum.org/sigsum-go/pkg/merkle"
"git.sigsum.org/sigsum-go/pkg/types"
"github.com/golang/mock/gomock"
)
func TestNewStateManagerSingle(t *testing.T) {
signerOk := &mocks.TestSigner{types.PublicKey{}, types.Signature{}, nil}
signerErr := &mocks.TestSigner{types.PublicKey{}, types.Signature{}, fmt.Errorf("err")}
for _, table := range []struct {
description string
signer crypto.Signer
rsp types.TreeHead
err error
wantErr bool
wantSth types.SignedTreeHead
}{
{
description: "invalid: backend failure",
signer: signerOk,
err: fmt.Errorf("something went wrong"),
wantErr: true,
},
{
description: "invalid: signer failure",
signer: signerErr,
rsp: types.TreeHead{},
wantErr: true,
},
{
description: "valid",
signer: signerOk,
rsp: types.TreeHead{},
wantSth: types.SignedTreeHead{},
},
} {
func() {
ctrl := gomock.NewController(t)
defer ctrl.Finish()
client := db.NewMockClient(ctrl)
client.EXPECT().GetTreeHead(gomock.Any()).Return(&table.rsp, table.err)
sm, err := NewStateManagerSingle(client, table.signer, time.Duration(0), time.Duration(0))
if got, want := err != nil, table.wantErr; got != want {
t.Errorf("got error %v but wanted %v in test %q: %v", got, want, table.description, err)
}
if err != nil {
return
}
if got, want := sm.signedTreeHead, &table.wantSth; !reflect.DeepEqual(got, want) {
t.Errorf("got to-cosign tree head\n\t%v\nbut wanted\n\t%v\nin test %q", got, want, table.description)
}
if got := sm.cosignedTreeHead; got != nil {
t.Errorf("got cosigned tree head but should have none in test %q", table.description)
}
}()
}
}
func TestToCosignTreeHead(t *testing.T) {
want := &types.SignedTreeHead{}
sm := StateManagerSingle{
signedTreeHead: want,
}
sth, err := sm.ToCosignTreeHead(context.Background())
if err != nil {
t.Errorf("should not fail with error: %v", err)
return
}
if got := sth; !reflect.DeepEqual(got, want) {
t.Errorf("got signed tree head\n\t%v\nbut wanted\n\t%v", got, want)
}
}
func TestCosignedTreeHead(t *testing.T) {
want := &types.CosignedTreeHead{
Cosignature: make([]types.Signature, 1),
KeyHash: make([]merkle.Hash, 1),
}
sm := StateManagerSingle{
cosignedTreeHead: want,
}
cth, err := sm.CosignedTreeHead(context.Background())
if err != nil {
t.Errorf("should not fail with error: %v", err)
return
}
if got := cth; !reflect.DeepEqual(got, want) {
t.Errorf("got cosigned tree head\n\t%v\nbut wanted\n\t%v", got, want)
}
sm.cosignedTreeHead = nil
cth, err = sm.CosignedTreeHead(context.Background())
if err == nil {
t.Errorf("should fail without a cosigned tree head")
return
}
}
func TestAddCosignature(t *testing.T) {
secret, public := mustKeyPair(t)
for _, table := range []struct {
desc string
signer crypto.Signer
vk types.PublicKey
wantErr bool
}{
{
desc: "invalid: wrong public key",
signer: secret,
vk: types.PublicKey{},
wantErr: true,
},
{
desc: "valid",
signer: secret,
vk: public,
},
} {
sm := &StateManagerSingle{
namespace: *merkle.HashFn(nil),
signedTreeHead: &types.SignedTreeHead{},
events: make(chan *event, 1),
}
defer close(sm.events)
sth := mustSign(t, table.signer, &sm.signedTreeHead.TreeHead, &sm.namespace)
ctx := context.Background()
err := sm.AddCosignature(ctx, &table.vk, &sth.Signature)
if got, want := err != nil, table.wantErr; got != want {
t.Errorf("got error %v but wanted %v in test %q: %v", got, want, table.desc, err)
}
if err != nil {
continue
}
ctx, cancel := context.WithTimeout(ctx, 50*time.Millisecond)
defer cancel()
if err := sm.AddCosignature(ctx, &table.vk, &sth.Signature); err == nil {
t.Errorf("expected full channel in test %q", table.desc)
}
if got, want := len(sm.events), 1; got != want {
t.Errorf("wanted %d cosignatures but got %d in test %q", want, got, table.desc)
}
}
}
func TestRotate(t *testing.T) {
sth := &types.SignedTreeHead{}
nextSTH := &types.SignedTreeHead{TreeHead: types.TreeHead{Timestamp: 1}}
ev := &event{
keyHash: &merkle.Hash{},
cosignature: &types.Signature{},
}
wantCTH := &types.CosignedTreeHead{
SignedTreeHead: *sth,
KeyHash: []merkle.Hash{*ev.keyHash},
Cosignature: []types.Signature{*ev.cosignature},
}
sm := &StateManagerSingle{
signedTreeHead: sth,
cosignatures: make(map[merkle.Hash]*types.Signature),
events: make(chan *event, 1),
}
defer close(sm.events)
sm.events <- ev
sm.rotate(nextSTH)
if got, want := sm.signedTreeHead, nextSTH; !reflect.DeepEqual(got, want) {
t.Errorf("got to-cosign tree head\n\t%v\nbut wanted\n\t%v", got, want)
}
if got, want := sm.cosignedTreeHead, wantCTH; !reflect.DeepEqual(got, want) {
t.Errorf("got cosigned tree head\n\t%v\nbut wanted\n\t%v", got, want)
}
sth = nextSTH
nextSTH = &types.SignedTreeHead{TreeHead: types.TreeHead{Timestamp: 2}}
sm.rotate(nextSTH)
if got, want := sm.signedTreeHead, nextSTH; !reflect.DeepEqual(got, want) {
t.Errorf("got to-cosign tree head\n\t%v\nbut wanted\n\t%v", got, want)
}
if got := sm.cosignedTreeHead; got != nil {
t.Errorf("expected no cosignatures to be available")
}
}
func mustKeyPair(t *testing.T) (crypto.Signer, types.PublicKey) {
t.Helper()
vk, sk, err := ed25519.GenerateKey(rand.Reader)
if err != nil {
t.Fatal(err)
}
var pub types.PublicKey
copy(pub[:], vk[:])
return sk, pub
}
func mustSign(t *testing.T, s crypto.Signer, th *types.TreeHead, kh *merkle.Hash) *types.SignedTreeHead {
t.Helper()
sth, err := th.Sign(s, kh)
if err != nil {
t.Fatal(err)
}
return sth
}
|
