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package driver
import (
"context"
"testing"
"github.com/stretchr/testify/require"
"github.com/ethereum/go-ethereum"
"github.com/ethereum/go-ethereum/common"
"github.com/ethereum-optimism/optimism/op-service/eth"
"github.com/ethereum-optimism/optimism/op-service/testutils"
)
var exHash = common.Hash{0xff}
type confTest struct {
name string
head uint64
hash common.Hash // hash of head block
req uint64
depth uint64
pass bool
}
func (ct *confTest) Run(t *testing.T) {
l1Fetcher := &testutils.MockL1Source{}
l1Head := eth.L1BlockRef{Number: ct.head, Hash: ct.hash}
l1HeadGetter := func() eth.L1BlockRef { return l1Head }
cd := NewConfDepth(ct.depth, l1HeadGetter, l1Fetcher)
if ct.pass {
// no calls to the l1Fetcher are made if the confirmation depth of the request is not met
l1Fetcher.ExpectL1BlockRefByNumber(ct.req, eth.L1BlockRef{Number: ct.req}, nil)
}
out, err := cd.L1BlockRefByNumber(context.Background(), ct.req)
l1Fetcher.AssertExpectations(t)
if ct.pass {
require.NoError(t, err)
require.Equal(t, out, eth.L1BlockRef{Number: ct.req})
} else {
require.Equal(t, ethereum.NotFound, err)
}
}
func TestConfDepth(t *testing.T) {
// note: we're not testing overflows.
// If a request is large enough to overflow the conf depth check, it's not returning anything anyway.
testCases := []confTest{
{name: "zero conf future", head: 4, hash: exHash, req: 5, depth: 0, pass: true},
{name: "zero conf present", head: 4, hash: exHash, req: 4, depth: 0, pass: true},
{name: "zero conf past", head: 4, hash: exHash, req: 4, depth: 0, pass: true},
{name: "one conf future", head: 4, hash: exHash, req: 5, depth: 1, pass: false},
{name: "one conf present", head: 4, hash: exHash, req: 4, depth: 1, pass: false},
{name: "one conf past", head: 4, hash: exHash, req: 3, depth: 1, pass: true},
{name: "two conf future", head: 4, hash: exHash, req: 5, depth: 2, pass: false},
{name: "two conf present", head: 4, hash: exHash, req: 4, depth: 2, pass: false},
{name: "two conf not like 1", head: 4, hash: exHash, req: 3, depth: 2, pass: false},
{name: "two conf pass", head: 4, hash: exHash, req: 2, depth: 2, pass: true},
{name: "easy pass", head: 100, hash: exHash, req: 20, depth: 5, pass: true},
{name: "genesis case", head: 0, hash: exHash, req: 0, depth: 4, pass: true},
{name: "no L1 state", req: 10, depth: 4, pass: true},
}
for _, tc := range testCases {
t.Run(tc.name, tc.Run)
}
}