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package fromda
import (
"testing"
"github.com/stretchr/testify/require"
"github.com/ethereum/go-ethereum/common"
"github.com/ethereum-optimism/optimism/op-supervisor/supervisor/types"
)
type testCase struct {
name string
setupFn setupFn
assertFn assertFn
}
func TestBadUpdates(t *testing.T) {
aDerivedFrom := mockL1(1)
aDerived := mockL2(201)
bDerivedFrom := mockL1(2)
bDerived := mockL2(202)
cDerivedFrom := mockL1(3)
cDerived := mockL2(203)
dDerivedFrom := mockL1(4)
dDerived := mockL2(204)
eDerivedFrom := mockL1(5)
eDerived := mockL2(205)
fDerivedFrom := mockL1(6)
fDerived := mockL2(206)
noChange := assertFn(func(t *testing.T, db *DB, m *stubMetrics) {
pair, err := db.Latest()
require.NoError(t, err)
require.Equal(t, dDerivedFrom, pair.DerivedFrom)
require.Equal(t, dDerived, pair.Derived)
})
testCases := []testCase{
{
name: "add on old derivedFrom",
setupFn: func(t *testing.T, db *DB, m *stubMetrics) {
require.ErrorIs(t, db.AddDerived(toRef(bDerivedFrom, aDerivedFrom.Hash), toRef(dDerived, cDerived.Hash)), types.ErrOutOfOrder)
},
assertFn: noChange,
},
{
name: "repeat parent derivedFrom",
setupFn: func(t *testing.T, db *DB, m *stubMetrics) {
require.ErrorIs(t, db.AddDerived(toRef(cDerivedFrom, bDerivedFrom.Hash), toRef(dDerived, cDerived.Hash)), types.ErrOutOfOrder)
},
assertFn: noChange,
},
{
name: "add on conflicting derivedFrom, same height. And new derived value",
setupFn: func(t *testing.T, db *DB, m *stubMetrics) {
require.ErrorIs(t, db.AddDerived(toRef(types.BlockSeal{
Hash: common.Hash{0xba, 0xd},
Number: dDerivedFrom.Number,
Timestamp: dDerivedFrom.Timestamp,
}, cDerivedFrom.Hash), toRef(eDerived, dDerived.Hash)), types.ErrConflict)
},
assertFn: noChange,
},
{
name: "CrossDerivedFrom with conflicting parent root, same L1 height, new L2: accepted, L1 parent-hash is used only on L1 increments.",
setupFn: func(t *testing.T, db *DB, m *stubMetrics) {
require.NoError(t, db.AddDerived(toRef(dDerivedFrom, common.Hash{0x42}), toRef(eDerived, dDerived.Hash)), types.ErrConflict)
},
assertFn: func(t *testing.T, db *DB, m *stubMetrics) {
pair, err := db.Latest()
require.NoError(t, err)
require.Equal(t, dDerivedFrom, pair.DerivedFrom)
require.Equal(t, eDerived, pair.Derived)
},
},
{
name: "Conflicting derivedFrom parent root, new L1 height, same L2",
setupFn: func(t *testing.T, db *DB, m *stubMetrics) {
require.ErrorIs(t, db.AddDerived(toRef(eDerivedFrom, common.Hash{0x42}), toRef(dDerived, cDerived.Hash)), types.ErrConflict)
},
assertFn: noChange,
},
{
name: "add on too new derivedFrom (even if parent-hash looks correct)",
setupFn: func(t *testing.T, db *DB, m *stubMetrics) {
require.ErrorIs(t, db.AddDerived(toRef(fDerivedFrom, dDerivedFrom.Hash), toRef(eDerived, dDerived.Hash)), types.ErrOutOfOrder)
},
assertFn: noChange,
},
{
name: "add on old derivedFrom (even if parent-hash looks correct)",
setupFn: func(t *testing.T, db *DB, m *stubMetrics) {
require.ErrorIs(t, db.AddDerived(toRef(cDerivedFrom, bDerivedFrom.Hash), toRef(cDerived, dDerived.Hash)), types.ErrOutOfOrder)
},
assertFn: noChange,
},
{
name: "add on even older derivedFrom",
setupFn: func(t *testing.T, db *DB, m *stubMetrics) {
require.ErrorIs(t, db.AddDerived(toRef(bDerivedFrom, aDerivedFrom.Hash), toRef(dDerived, cDerived.Hash)), types.ErrOutOfOrder)
},
assertFn: noChange,
},
{
name: "add on conflicting derived, same L2 height, new L1 block",
setupFn: func(t *testing.T, db *DB, m *stubMetrics) {
require.ErrorIs(t, db.AddDerived(toRef(eDerivedFrom, dDerivedFrom.Hash), toRef(types.BlockSeal{
Hash: common.Hash{0x42},
Number: dDerived.Number,
Timestamp: dDerived.Timestamp,
}, cDerived.Hash)), types.ErrConflict)
},
assertFn: noChange,
},
{
name: "add derived with conflicting parent hash, new L1 height, same L2 height: accepted, L2 parent-hash is only checked on L2 increments.",
setupFn: func(t *testing.T, db *DB, m *stubMetrics) {
require.NoError(t, db.AddDerived(toRef(eDerivedFrom, dDerivedFrom.Hash), toRef(dDerived, common.Hash{0x42})), types.ErrConflict)
},
assertFn: func(t *testing.T, db *DB, m *stubMetrics) {
pair, err := db.Latest()
require.NoError(t, err)
require.Equal(t, eDerivedFrom, pair.DerivedFrom)
require.Equal(t, dDerived, pair.Derived)
},
},
{
name: "add derived with conflicting parent hash, same L1 height, new L2 height",
setupFn: func(t *testing.T, db *DB, m *stubMetrics) {
require.ErrorIs(t, db.AddDerived(toRef(dDerivedFrom, cDerivedFrom.Hash), toRef(eDerived, common.Hash{0x42})), types.ErrConflict)
},
assertFn: noChange,
},
{
name: "add on too new derived (even if parent-hash looks correct)",
setupFn: func(t *testing.T, db *DB, m *stubMetrics) {
require.ErrorIs(t, db.AddDerived(toRef(dDerivedFrom, cDerivedFrom.Hash), toRef(fDerived, dDerived.Hash)), types.ErrOutOfOrder)
},
assertFn: noChange,
},
{
name: "add on old derived (even if parent-hash looks correct)",
setupFn: func(t *testing.T, db *DB, m *stubMetrics) {
require.ErrorIs(t, db.AddDerived(toRef(dDerivedFrom, cDerivedFrom.Hash), toRef(cDerived, bDerived.Hash)), types.ErrOutOfOrder)
},
assertFn: noChange,
},
{
name: "add on even older derived",
setupFn: func(t *testing.T, db *DB, m *stubMetrics) {
require.ErrorIs(t, db.AddDerived(toRef(dDerivedFrom, cDerivedFrom.Hash), toRef(bDerived, aDerived.Hash)), types.ErrOutOfOrder)
},
assertFn: noChange,
},
{
name: "repeat self, silent no-op",
setupFn: func(t *testing.T, db *DB, m *stubMetrics) {
pre := m.DBDerivedEntryCount
require.NoError(t, db.AddDerived(toRef(dDerivedFrom, cDerivedFrom.Hash), toRef(dDerived, cDerived.Hash)), types.ErrOutOfOrder)
require.Equal(t, pre, m.DBDerivedEntryCount)
},
assertFn: noChange,
},
}
for _, tc := range testCases {
t.Run(tc.name, func(t *testing.T) {
runDBTest(t,
func(t *testing.T, db *DB, m *stubMetrics) {
// Good first entry
require.NoError(t, db.AddDerived(toRef(dDerivedFrom, cDerivedFrom.Hash), toRef(dDerived, cDerived.Hash)))
// apply the test-case setup
tc.setupFn(t, db, m)
},
tc.assertFn)
})
}
}