-
Notifications
You must be signed in to change notification settings - Fork 175
/
helper.go
612 lines (515 loc) · 22 KB
/
helper.go
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
package verificationtest
import (
"context"
"fmt"
"sync"
"testing"
"time"
"github.com/rs/zerolog"
"github.com/rs/zerolog/log"
"github.com/stretchr/testify/assert"
testifymock "github.com/stretchr/testify/mock"
"github.com/stretchr/testify/require"
"github.com/onflow/flow-go/consensus/hotstuff/model"
"github.com/onflow/flow-go/crypto"
"github.com/onflow/flow-go/engine"
"github.com/onflow/flow-go/engine/testutil"
enginemock "github.com/onflow/flow-go/engine/testutil/mock"
"github.com/onflow/flow-go/engine/verification/assigner/blockconsumer"
"github.com/onflow/flow-go/model/chunks"
"github.com/onflow/flow-go/model/encoding"
"github.com/onflow/flow-go/model/flow"
"github.com/onflow/flow-go/model/flow/filter"
"github.com/onflow/flow-go/model/messages"
"github.com/onflow/flow-go/module"
"github.com/onflow/flow-go/module/metrics"
"github.com/onflow/flow-go/module/mock"
"github.com/onflow/flow-go/module/trace"
"github.com/onflow/flow-go/network"
"github.com/onflow/flow-go/network/mocknetwork"
"github.com/onflow/flow-go/network/stub"
"github.com/onflow/flow-go/state/protocol"
mockprotocol "github.com/onflow/flow-go/state/protocol/mock"
"github.com/onflow/flow-go/utils/logging"
"github.com/onflow/flow-go/utils/unittest"
)
// MockChunkDataProviderFunc is a test helper function encapsulating the logic of whether to reply a chunk data pack request.
type MockChunkDataProviderFunc func(*testing.T, CompleteExecutionReceiptList, flow.Identifier, flow.Identifier, network.Conduit) bool
// SetupChunkDataPackProvider creates and returns an execution node that only has a chunk data pack provider engine.
//
// The mock chunk provider engine replies the chunk back requests by invoking the injected provider method. All chunk data pack
// requests should come from a verification node, and should has one of the assigned chunk IDs. Otherwise, it fails the test.
func SetupChunkDataPackProvider(t *testing.T,
hub *stub.Hub,
exeIdentity *flow.Identity,
participants flow.IdentityList,
chainID flow.ChainID,
completeERs CompleteExecutionReceiptList,
assignedChunkIDs flow.IdentifierList,
provider MockChunkDataProviderFunc) (*enginemock.GenericNode,
*mocknetwork.Engine, *sync.WaitGroup) {
exeNode := testutil.GenericNodeFromParticipants(t, hub, exeIdentity, participants, chainID)
exeEngine := new(mocknetwork.Engine)
exeChunkDataConduit, err := exeNode.Net.Register(engine.ProvideChunks, exeEngine)
assert.Nil(t, err)
replied := make(map[flow.Identifier]struct{})
wg := &sync.WaitGroup{}
wg.Add(len(assignedChunkIDs))
mu := &sync.Mutex{} // making testify Run thread-safe
exeEngine.On("Process", testifymock.AnythingOfType("network.Channel"), testifymock.Anything, testifymock.Anything).
Run(func(args testifymock.Arguments) {
mu.Lock()
defer mu.Unlock()
originID, ok := args[1].(flow.Identifier)
require.True(t, ok)
// request should be dispatched by a verification node.
require.Contains(t, participants.Filter(filter.HasRole(flow.RoleVerification)).NodeIDs(), originID)
req, ok := args[2].(*messages.ChunkDataRequest)
require.True(t, ok)
require.Contains(t, assignedChunkIDs, req.ChunkID) // only assigned chunks should be requested.
shouldReply := provider(t, completeERs, req.ChunkID, originID, exeChunkDataConduit)
_, alreadyReplied := replied[req.ChunkID]
if shouldReply && !alreadyReplied {
/*
the wait group keeps track of unique chunk requests addressed.
we make it done only upon the first successful request of a chunk.
*/
wg.Done()
replied[req.ChunkID] = struct{}{}
}
}).Return(nil)
return &exeNode, exeEngine, wg
}
// RespondChunkDataPackRequestImmediately immediately qualifies a chunk data request for reply by chunk data provider.
func RespondChunkDataPackRequestImmediately(t *testing.T,
completeERs CompleteExecutionReceiptList,
chunkID flow.Identifier,
verID flow.Identifier,
con network.Conduit) bool {
// finds the chunk data pack of the requested chunk and sends it back.
res := completeERs.ChunkDataResponseOf(t, chunkID)
err := con.Unicast(res, verID)
assert.Nil(t, err)
log.Debug().
Hex("origin_id", logging.ID(verID)).
Hex("chunk_id", logging.ID(chunkID)).
Msg("chunk data pack request answered by provider")
return true
}
// RespondChunkDataPackRequestAfterNTrials only qualifies a chunk data request for reply by chunk data provider after n times.
func RespondChunkDataPackRequestAfterNTrials(n int) MockChunkDataProviderFunc {
tryCount := make(map[flow.Identifier]int)
return func(t *testing.T, completeERs CompleteExecutionReceiptList, chunkID flow.Identifier, verID flow.Identifier, con network.Conduit) bool {
tryCount[chunkID]++
if tryCount[chunkID] >= n {
// finds the chunk data pack of the requested chunk and sends it back.
res := completeERs.ChunkDataResponseOf(t, chunkID)
err := con.Unicast(res, verID)
assert.Nil(t, err)
log.Debug().
Hex("origin_id", logging.ID(verID)).
Hex("chunk_id", logging.ID(chunkID)).
Int("trial_time", tryCount[chunkID]).
Msg("chunk data pack request answered by provider")
return true
}
return false
}
}
// SetupMockConsensusNode creates and returns a mock consensus node (conIdentity) and its registered engine in the
// network (hub). It mocks the process method of the consensus engine to receive a message from a certain
// verification node (verIdentity) evaluates whether it is a result approval about an assigned chunk to that verifier node.
func SetupMockConsensusNode(t *testing.T,
log zerolog.Logger,
hub *stub.Hub,
conIdentity *flow.Identity,
verIdentities flow.IdentityList,
othersIdentity flow.IdentityList,
completeERs CompleteExecutionReceiptList,
chainID flow.ChainID,
assignedChunkIDs flow.IdentifierList) (*enginemock.GenericNode, *mocknetwork.Engine, *sync.WaitGroup) {
lg := log.With().Str("role", "mock-consensus").Logger()
wg := &sync.WaitGroup{}
// each verification node is assigned to issue one result approval per assigned chunk.
// and there are `len(verIdentities)`-many verification nodes
// so there is a total of len(verIdentities) * len*(assignedChunkIDs) expected
// result approvals.
wg.Add(len(verIdentities) * len(assignedChunkIDs))
// mock the consensus node with a generic node and mocked engine to assert
// that the result approval is broadcast
conNode := testutil.GenericNodeFromParticipants(t, hub, conIdentity, othersIdentity, chainID)
conEngine := new(mocknetwork.Engine)
// map form verIds --> result approval ID
resultApprovalSeen := make(map[flow.Identifier]map[flow.Identifier]struct{})
for _, verIdentity := range verIdentities {
resultApprovalSeen[verIdentity.NodeID] = make(map[flow.Identifier]struct{})
}
// creates a hasher for spock
hasher := crypto.NewBLSKMAC(encoding.SPOCKTag)
mu := &sync.Mutex{} // making testify mock thread-safe
conEngine.On("Process", testifymock.AnythingOfType("network.Channel"), testifymock.Anything, testifymock.Anything).
Run(func(args testifymock.Arguments) {
mu.Lock()
defer mu.Unlock()
originID, ok := args[1].(flow.Identifier)
assert.True(t, ok)
resultApproval, ok := args[2].(*flow.ResultApproval)
assert.True(t, ok)
lg.Debug().
Hex("result_approval_id", logging.ID(resultApproval.ID())).
Msg("result approval received")
// asserts that result approval has not been seen from this
_, ok = resultApprovalSeen[originID][resultApproval.ID()]
assert.False(t, ok)
// marks result approval as seen
resultApprovalSeen[originID][resultApproval.ID()] = struct{}{}
// result approval should belong to an assigned chunk to the verification node.
chunk := completeERs.ChunkOf(t, resultApproval.Body.ExecutionResultID, resultApproval.Body.ChunkIndex)
assert.Contains(t, assignedChunkIDs, chunk.ID())
// verifies SPoCK proof of result approval
// against the SPoCK secret of the execution result
//
// retrieves public key of verification node
var pk crypto.PublicKey
found := false
for _, identity := range verIdentities {
if originID == identity.NodeID {
pk = identity.StakingPubKey
found = true
}
}
require.True(t, found)
// verifies spocks
valid, err := crypto.SPOCKVerifyAgainstData(
pk,
resultApproval.Body.Spock,
completeERs.ReceiptDataOf(t, chunk.ID()).SpockSecrets[resultApproval.Body.ChunkIndex],
hasher,
)
assert.NoError(t, err)
assert.True(t, valid)
wg.Done()
}).Return(nil)
_, err := conNode.Net.Register(engine.ReceiveApprovals, conEngine)
assert.Nil(t, err)
return &conNode, conEngine, wg
}
// isSystemChunk returns true if the index corresponds to the system chunk, i.e., last chunk in
// the receipt.
func isSystemChunk(index uint64, chunkNum int) bool {
return int(index) == chunkNum-1
}
func CreateExecutionResult(blockID flow.Identifier, options ...func(result *flow.ExecutionResult, assignments *chunks.Assignment)) (*flow.ExecutionResult, *chunks.Assignment) {
result := &flow.ExecutionResult{
BlockID: blockID,
Chunks: flow.ChunkList{},
}
assignments := chunks.NewAssignment()
for _, option := range options {
option(result, assignments)
}
return result, assignments
}
func WithChunks(setAssignees ...func(flow.Identifier, uint64, *chunks.Assignment) *flow.Chunk) func(*flow.ExecutionResult, *chunks.Assignment) {
return func(result *flow.ExecutionResult, assignment *chunks.Assignment) {
for i, setAssignee := range setAssignees {
chunk := setAssignee(result.BlockID, uint64(i), assignment)
result.Chunks.Insert(chunk)
}
}
}
func ChunkWithIndex(blockID flow.Identifier, index int) *flow.Chunk {
chunk := &flow.Chunk{
Index: uint64(index),
ChunkBody: flow.ChunkBody{
CollectionIndex: uint(index),
EventCollection: blockID, // ensure chunks from different blocks with the same index will have different chunk ID
BlockID: blockID,
},
EndState: unittest.StateCommitmentFixture(),
}
return chunk
}
func WithAssignee(assignee flow.Identifier) func(flow.Identifier, uint64, *chunks.Assignment) *flow.Chunk {
return func(blockID flow.Identifier, index uint64, assignment *chunks.Assignment) *flow.Chunk {
chunk := ChunkWithIndex(blockID, int(index))
fmt.Printf("with assignee: %v, chunk id: %v\n", index, chunk.ID())
assignment.Add(chunk, flow.IdentifierList{assignee})
return chunk
}
}
func FromChunkID(chunkID flow.Identifier) flow.ChunkDataPack {
return flow.ChunkDataPack{
ChunkID: chunkID,
}
}
type ChunkAssignerFunc func(chunkIndex uint64, chunks int) bool
// MockChunkAssignmentFixture is a test helper that mocks a chunk assigner for a set of verification nodes for the
// execution results in the given complete execution receipts, and based on the given chunk assigner function.
//
// It returns the list of chunk locator ids assigned to the input verification nodes, as well as the list of their chunk IDs.
// All verification nodes are assigned the same chunks.
func MockChunkAssignmentFixture(chunkAssigner *mock.ChunkAssigner,
verIds flow.IdentityList,
completeERs CompleteExecutionReceiptList,
isAssigned ChunkAssignerFunc) (flow.IdentifierList, flow.IdentifierList) {
expectedLocatorIds := flow.IdentifierList{}
expectedChunkIds := flow.IdentifierList{}
// keeps track of duplicate results (receipts that share same result)
visited := make(map[flow.Identifier]struct{})
for _, completeER := range completeERs {
for _, receipt := range completeER.Receipts {
a := chunks.NewAssignment()
_, duplicate := visited[receipt.ExecutionResult.ID()]
if duplicate {
// skips mocking chunk assignment for duplicate results
continue
}
for _, chunk := range receipt.ExecutionResult.Chunks {
if isAssigned(chunk.Index, len(receipt.ExecutionResult.Chunks)) {
locatorID := chunks.Locator{
ResultID: receipt.ExecutionResult.ID(),
Index: chunk.Index,
}.ID()
expectedLocatorIds = append(expectedLocatorIds, locatorID)
expectedChunkIds = append(expectedChunkIds, chunk.ID())
a.Add(chunk, verIds.NodeIDs())
}
}
chunkAssigner.On("Assign", &receipt.ExecutionResult, completeER.ContainerBlock.ID()).Return(a, nil)
visited[receipt.ExecutionResult.ID()] = struct{}{}
}
}
return expectedLocatorIds, expectedChunkIds
}
// EvenChunkIndexAssigner is a helper function that returns true for the even indices in [0, chunkNum-1]
// It also returns true if the index corresponds to the system chunk.
func EvenChunkIndexAssigner(index uint64, chunkNum int) bool {
ok := index%2 == 0 || isSystemChunk(index, chunkNum)
return ok
}
// ExtendStateWithFinalizedBlocks is a test helper to extend the execution state and return the list of blocks.
// It receives a list of complete execution receipt fixtures in the form of (R1,1 <- R1,2 <- ... <- C1) <- (R2,1 <- R2,2 <- ... <- C2) <- .....
// Where R and C are the reference and container blocks.
// Reference blocks contain guarantees, and container blocks contain execution receipt for their preceding reference blocks,
// e.g., C1 contains receipts for R1,1, R1,2, etc.
// Note: for sake of simplicity we do not include guarantees in the container blocks for now.
func ExtendStateWithFinalizedBlocks(t *testing.T, completeExecutionReceipts CompleteExecutionReceiptList,
state protocol.MutableState) []*flow.Block {
blocks := make([]*flow.Block, 0)
// tracks of duplicate reference blocks
// since receipts may share the same execution result, hence
// their reference block is the same (and we should not extend for it).
duplicate := make(map[flow.Identifier]struct{})
// extends protocol state with the chain of blocks.
for _, completeER := range completeExecutionReceipts {
// extends state with reference blocks of the receipts
for _, receipt := range completeER.ReceiptsData {
refBlockID := receipt.ReferenceBlock.ID()
_, dup := duplicate[refBlockID]
if dup {
// skips extending state with already duplicate reference block
continue
}
err := state.Extend(context.Background(), receipt.ReferenceBlock)
require.NoError(t, err, fmt.Errorf("can not extend block %v: %w", receipt.ReferenceBlock.ID(), err))
err = state.Finalize(context.Background(), refBlockID)
require.NoError(t, err)
blocks = append(blocks, receipt.ReferenceBlock)
duplicate[refBlockID] = struct{}{}
}
// extends state with container block of receipt.
containerBlockID := completeER.ContainerBlock.ID()
_, dup := duplicate[containerBlockID]
if dup {
// skips extending state with already duplicate container block
continue
}
err := state.Extend(context.Background(), completeER.ContainerBlock)
require.NoError(t, err)
err = state.Finalize(context.Background(), containerBlockID)
require.NoError(t, err)
blocks = append(blocks, completeER.ContainerBlock)
duplicate[containerBlockID] = struct{}{}
}
return blocks
}
// MockLastSealedHeight mocks the protocol state for the specified last sealed height.
func MockLastSealedHeight(state *mockprotocol.State, height uint64) {
snapshot := &mockprotocol.Snapshot{}
header := unittest.BlockHeaderFixture()
header.Height = height
state.On("Sealed").Return(snapshot)
snapshot.On("Head").Return(&header, nil)
}
func NewVerificationHappyPathTest(t *testing.T,
authorized bool,
blockCount int,
eventRepetition int,
verCollector module.VerificationMetrics,
mempoolCollector module.MempoolMetrics,
retry int,
ops ...CompleteExecutionReceiptBuilderOpt) {
withConsumers(t, authorized, blockCount, verCollector, mempoolCollector, RespondChunkDataPackRequestAfterNTrials(retry), func(
blockConsumer *blockconsumer.BlockConsumer,
blocks []*flow.Block,
resultApprovalsWG *sync.WaitGroup,
chunkDataRequestWG *sync.WaitGroup) {
for i := 0; i < len(blocks)*eventRepetition; i++ {
// consumer is only required to be "notified" that a new finalized block available.
// It keeps track of the last finalized block it has read, and read the next height upon
// getting notified as follows:
blockConsumer.OnFinalizedBlock(&model.Block{})
}
unittest.RequireReturnsBefore(t, chunkDataRequestWG.Wait, time.Duration(10*retry*blockCount)*time.Second,
"could not receive chunk data requests on time")
unittest.RequireReturnsBefore(t, resultApprovalsWG.Wait, time.Duration(2*retry*blockCount)*time.Second,
"could not receive result approvals on time")
}, ops...)
}
// withConsumers is a test helper that sets up the following pipeline:
// block reader -> block consumer (3 workers) -> assigner engine -> chunks queue -> chunks consumer (3 workers) -> mock chunk processor
//
// The block consumer operates on a block reader with a chain of specified number of finalized blocks
// ready to read.
func withConsumers(t *testing.T,
authorized bool,
blockCount int,
verCollector module.VerificationMetrics, // verification metrics collector
mempoolCollector module.MempoolMetrics, // memory pool metrics collector
providerFunc MockChunkDataProviderFunc,
withBlockConsumer func(*blockconsumer.BlockConsumer, []*flow.Block, *sync.WaitGroup, *sync.WaitGroup),
ops ...CompleteExecutionReceiptBuilderOpt) {
tracer := &trace.NoopTracer{}
// bootstraps system with one node of each role.
s, verID, participants := bootstrapSystem(t, tracer, authorized)
exeID := participants.Filter(filter.HasRole(flow.RoleExecution))[0]
conID := participants.Filter(filter.HasRole(flow.RoleConsensus))[0]
// generates a chain of blocks in the form of root <- R1 <- C1 <- R2 <- C2 <- ... where Rs are distinct reference
// blocks (i.e., containing guarantees), and Cs are container blocks for their preceding reference block,
// Container blocks only contain receipts of their preceding reference blocks. But they do not
// hold any guarantees.
root, err := s.State.Final().Head()
require.NoError(t, err)
chainID := root.ChainID
ops = append(ops, WithExecutorIDs(
participants.Filter(filter.HasRole(flow.RoleExecution)).NodeIDs()), func(builder *CompleteExecutionReceiptBuilder) {
// needed for the guarantees to have the correct chainID and signer indices
builder.clusterCommittee = participants.Filter(filter.HasRole(flow.RoleCollection))
})
completeERs := CompleteExecutionReceiptChainFixture(t, root, blockCount, ops...)
blocks := ExtendStateWithFinalizedBlocks(t, completeERs, s.State)
// chunk assignment
chunkAssigner := &mock.ChunkAssigner{}
assignedChunkIDs := flow.IdentifierList{}
if authorized {
// only authorized verification node has some chunks assigned to it.
_, assignedChunkIDs = MockChunkAssignmentFixture(chunkAssigner,
flow.IdentityList{verID},
completeERs,
EvenChunkIndexAssigner)
}
hub := stub.NewNetworkHub()
collector := &metrics.NoopCollector{}
chunksLimit := 100
genericNode := testutil.GenericNodeWithStateFixture(t,
s,
hub,
verID,
unittest.Logger().With().Str("role", "verification").Logger(),
collector,
tracer,
chainID)
// execution node
exeNode, exeEngine, exeWG := SetupChunkDataPackProvider(t,
hub,
exeID,
participants,
chainID,
completeERs,
assignedChunkIDs,
providerFunc)
// consensus node
conNode, conEngine, conWG := SetupMockConsensusNode(t,
unittest.Logger(),
hub,
conID,
flow.IdentityList{verID},
participants,
completeERs,
chainID,
assignedChunkIDs)
verNode := testutil.VerificationNode(t,
hub,
verID,
participants,
chunkAssigner,
uint(chunksLimit),
chainID,
verCollector,
mempoolCollector,
testutil.WithGenericNode(&genericNode))
// turns on components and network
verNet, ok := hub.GetNetwork(verID.NodeID)
require.True(t, ok)
unittest.RequireReturnsBefore(t, func() {
verNet.StartConDev(100*time.Millisecond, true)
}, 100*time.Millisecond, "failed to start verification network")
unittest.RequireComponentsReadyBefore(t, 1*time.Second,
verNode.BlockConsumer,
verNode.ChunkConsumer,
verNode.AssignerEngine,
verNode.FetcherEngine,
verNode.RequesterEngine,
verNode.VerifierEngine)
// plays test scenario
withBlockConsumer(verNode.BlockConsumer, blocks, conWG, exeWG)
// tears down engines and nodes
unittest.RequireReturnsBefore(t, verNet.StopConDev, 100*time.Millisecond, "failed to stop verification network")
unittest.RequireComponentsDoneBefore(t, 100*time.Millisecond,
verNode.BlockConsumer,
verNode.ChunkConsumer,
verNode.AssignerEngine,
verNode.FetcherEngine,
verNode.RequesterEngine,
verNode.VerifierEngine)
enginemock.RequireGenericNodesDoneBefore(t, 1*time.Second,
conNode,
exeNode)
if !authorized {
// in unauthorized mode, no message should be received by consensus and execution node.
conEngine.AssertNotCalled(t, "Process")
exeEngine.AssertNotCalled(t, "Process")
}
// verifies memory resources are cleaned up all over pipeline
assert.True(t, verNode.BlockConsumer.Size() == 0)
assert.True(t, verNode.ChunkConsumer.Size() == 0)
assert.True(t, verNode.ChunkStatuses.Size() == 0)
assert.True(t, verNode.ChunkRequests.Size() == 0)
}
// bootstrapSystem is a test helper that bootstraps a flow system with node of each main roles (except execution nodes that are two).
// If authorized set to true, it bootstraps verification node as an authorized one.
// Otherwise, it bootstraps the verification node as unauthorized in current epoch.
//
// As the return values, it returns the state, local module, and list of identities in system.
func bootstrapSystem(t *testing.T, tracer module.Tracer, authorized bool) (*enginemock.StateFixture, *flow.Identity,
flow.IdentityList) {
// creates identities to bootstrap system with
verID := unittest.IdentityFixture(unittest.WithRole(flow.RoleVerification))
identities := unittest.CompleteIdentitySet(verID)
identities = append(identities, unittest.IdentityFixture(unittest.WithRole(flow.RoleExecution))) // adds extra execution node
// bootstraps the system
collector := &metrics.NoopCollector{}
rootSnapshot := unittest.RootSnapshotFixture(identities)
stateFixture := testutil.CompleteStateFixture(t, collector, tracer, rootSnapshot)
if !authorized {
// creates a new verification node identity that is unauthorized for this epoch
verID = unittest.IdentityFixture(unittest.WithRole(flow.RoleVerification))
identities = identities.Union(flow.IdentityList{verID})
epochBuilder := unittest.NewEpochBuilder(t, stateFixture.State)
epochBuilder.
UsingSetupOpts(unittest.WithParticipants(identities)).
BuildEpoch()
}
return stateFixture, verID, identities
}