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package derive
import (
"bytes"
"context"
"io"
"log/slog"
"testing"
"github.com/stretchr/testify/mock"
"github.com/stretchr/testify/require"
"github.com/ethereum-optimism/optimism/op-node/rollup"
"github.com/ethereum-optimism/optimism/op-node/rollup/derive/mocks"
"github.com/ethereum-optimism/optimism/op-node/rollup/derive/params"
"github.com/ethereum-optimism/optimism/op-service/eth"
"github.com/ethereum-optimism/optimism/op-service/testlog"
)
func TestPruneFrameQueue(t *testing.T) {
for _, tt := range []struct {
desc string
frames []testFrame
expected []testFrame
}{
{
desc: "empty",
frames: []testFrame{},
expected: []testFrame{},
},
{
desc: "one",
frames: []testFrame{"a:2:"},
expected: []testFrame{"a:2:"},
},
{
desc: "one-last",
frames: []testFrame{"a:2:!"},
expected: []testFrame{"a:2:!"},
},
{
desc: "last-new",
frames: []testFrame{"a:2:!", "b:0:"},
expected: []testFrame{"a:2:!", "b:0:"},
},
{
desc: "last-ooo",
frames: []testFrame{"a:2:!", "b:1:"},
expected: []testFrame{"a:2:!"},
},
{
desc: "middle-lastooo",
frames: []testFrame{"b:1:", "a:2:!"},
expected: []testFrame{"b:1:"},
},
{
desc: "middle-first",
frames: []testFrame{"b:1:", "a:0:"},
expected: []testFrame{"a:0:"},
},
{
desc: "last-first",
frames: []testFrame{"b:1:!", "a:0:"},
expected: []testFrame{"b:1:!", "a:0:"},
},
{
desc: "last-ooo",
frames: []testFrame{"b:1:!", "b:2:"},
expected: []testFrame{"b:1:!"},
},
{
desc: "ooo",
frames: []testFrame{"b:1:", "b:3:"},
expected: []testFrame{"b:1:"},
},
{
desc: "other-ooo",
frames: []testFrame{"b:1:", "c:3:"},
expected: []testFrame{"b:1:"},
},
{
desc: "other-ooo-last",
frames: []testFrame{"b:1:", "c:3:", "b:2:!"},
expected: []testFrame{"b:1:", "b:2:!"},
},
{
desc: "ooo-resubmit",
frames: []testFrame{"b:1:", "b:3:!", "b:2:", "b:3:!"},
expected: []testFrame{"b:1:", "b:2:", "b:3:!"},
},
{
desc: "first-discards-multiple",
frames: []testFrame{"c:0:", "c:1:", "c:2:", "d:0:", "c:3:!"},
expected: []testFrame{"d:0:"},
},
{
desc: "complex",
frames: []testFrame{"b:1:", "b:2:!", "a:0:", "c:1:!", "a:1:", "a:2:!", "c:0:", "c:1:", "d:0:", "c:2:!", "e:0:"},
expected: []testFrame{"b:1:", "b:2:!", "a:0:", "a:1:", "a:2:!", "e:0:"},
},
} {
t.Run(tt.desc, func(t *testing.T) {
pfs := pruneFrameQueue(testFramesToFrames(tt.frames...))
require.Equal(t, testFramesToFrames(tt.expected...), pfs)
})
}
}
func TestFrameQueue_NextFrame(t *testing.T) {
t.Run("pre-holocene", func(t *testing.T) { testFrameQueue_NextFrame(t, false) })
t.Run("holocene", func(t *testing.T) { testFrameQueue_NextFrame(t, true) })
}
func testFrameQueue_NextFrame(t *testing.T, holocene bool) {
lgr := testlog.Logger(t, slog.LevelWarn)
cfg := &rollup.Config{}
dp := mocks.NewNextDataProvider(t)
fq := NewFrameQueue(lgr, cfg, dp)
inFrames := testFramesToFrames("b:1:", "b:2:!", "a:0:", "c:1:!", "a:1:", "a:2:!", "c:0:", "c:1:", "d:0:", "c:2:!", "e:0:")
var expFrames []Frame
if holocene {
cfg.HoloceneTime = ptr(uint64(0))
// expect pruned frames with Holocene
expFrames = testFramesToFrames("b:1:", "b:2:!", "a:0:", "a:1:", "a:2:!", "e:0:")
} else {
expFrames = inFrames
}
var inBuf bytes.Buffer
inBuf.WriteByte(params.DerivationVersion0)
for _, f := range inFrames {
require.NoError(t, f.MarshalBinary(&inBuf))
}
dp.On("Origin").Return(eth.L1BlockRef{})
dp.On("NextData", mock.Anything).Return(inBuf.Bytes(), nil).Once()
dp.On("NextData", mock.Anything).Return(nil, io.EOF)
gotFrames := make([]Frame, 0, len(expFrames))
for i := 0; i <= len(inFrames); i++ { // make sure we hit EOF case
frame, err := fq.NextFrame(context.Background())
if err != nil {
require.ErrorIs(t, err, io.EOF)
break
}
require.NoError(t, err)
gotFrames = append(gotFrames, frame)
}
require.Equal(t, expFrames, gotFrames)
}
func ptr[T any](t T) *T { return &t }
func testFramesToFrames(tfs ...testFrame) []Frame {
fs := make([]Frame, 0, len(tfs))
for _, f := range tfs {
fs = append(fs, f.ToFrame())
}
return fs
}