Integration Test Classification Report¶

Note: This document is a historical reference from our test infrastructure improvement process. The issues documented here have been addressed as part of ongoing development.

Executive Summary¶

CI Run: 19384516786
Total Tests Defined: ~650+ individual test executions across 9 test suites
Status: ✅ Historical analysis - issues have been addressed

Test Suite Classification¶

1. txExecTest Suite (Block Execution Validation)¶

Purpose: Validate EVM execution and state transitions across blocks

ForksTest¶

File: src/it/scala/com/chipprbots/ethereum/txExecTest/ForksTest.scala
Test Cases: 1 test case
Block Executions: Blocks 1-11 (11 executions)
Status: ❌ FAILED (all 11 block executions likely failed)
Failure Type: State root validation errors (EIP-161 fixture mismatch)
Not Run: 0 (all blocks attempted before suite failure)

ContractTest¶

File: src/it/scala/com/chipprbots/ethereum/txExecTest/ContractTest.scala
Test Cases: 1 test case
Block Executions: Blocks 1-3 (3 executions)
Status: ❌ FAILED (state root mismatch at block 3)
Failure Type: State root validation errors (EIP-161 fixture mismatch)
Not Run: 0 (all blocks attempted before suite failure)

ECIP1017Test¶

File: src/it/scala/com/chipprbots/ethereum/txExecTest/ECIP1017Test.scala
Test Cases: 1 test case
Block Executions: Blocks 1-602 (602 executions)
Status: ⏭️ LIKELY NOT RUN (suite may not have started due to earlier failures)
Not Run: ~602 block executions

txExecTest Subtotal: - Defined: 3 test suites, 616 block executions - Run: ~14 executions (ForksTest 11 + ContractTest 3) - Failed: ~14 executions - Not Run: ~602 executions (ECIP1017Test entirely skipped)

2. Sync Suite (FastSync and RegularSync Integration)¶

Purpose: End-to-end peer synchronization testing

FastSyncItSpec¶

File: src/it/scala/com/chipprbots/ethereum/sync/FastSyncItSpec.scala
Test Cases: 9 test cases
❌ sync blockchain without state nodes
❌ sync blockchain with state nodes
❌ sync with peers not responding with full responses
❌ sync when peer sends empty state responses
❌ update pivot block
❌ update pivot block and sync new pivot state
❌ sync state from partially synced state
❌ follow the longest chains
❌ switch to regular sync at safeDownloadTarget
Status: ❌ FAILED (likely 4-5 failures based on 19 total)
Failure Type: State root mismatches, sync validation failures
Not Run: Possibly 0-4 tests if failures stopped execution early

RegularSyncItSpec¶

File: src/it/scala/com/chipprbots/ethereum/sync/RegularSyncItSpec.scala
Test Cases: 9+ test cases (some with nested scenarios)
❌ peer 2 sync to top - imported blockchain
❌ peer 2 sync to top - mined blockchain
❌ peers keep synced while progressing
❌ peers synced on checkpoints
❌ peers synced with 2 checkpoint forks
❌ peers choose checkpoint branch
❌ peers choose checkpoint even if shorter
❌ peers resolve divergent chains
❌ mining metric available
Status: ❌ FAILED (likely 4-5 failures based on 19 total)
Failure Type: State root mismatches, sync validation failures
Not Run: Possibly 0-4 tests if failures stopped execution early

Sync Suite Subtotal: - Defined: 18+ test cases - Run: ~18 tests (likely all attempted) - Failed: ~9 tests (estimated from 19 total - 14 from txExec) - Not Run: 0 (likely all attempted before final failure)

3. Other Integration Tests (Passed Successfully)¶

BlockImporterItSpec¶

File: src/it/scala/com/chipprbots/ethereum/ledger/BlockImporterItSpec.scala
Test Cases: 7 test cases
Status: ✅ PASSED (all 7 tests)
Not Run: 0

RockDbIteratorSpec¶

File: src/it/scala/com/chipprbots/ethereum/db/RockDbIteratorSpec.scala
Test Cases: 5 test cases
Status: ✅ PASSED (all 5 tests)
Not Run: 0

Other Tests Subtotal: - Defined: 12 test cases - Run: 12 tests - Passed: 12 tests - Failed: 0 - Not Run: 0

Overall Summary¶

Category	Suites	Tests Defined	Tests Run	Passed	Failed	Not Run
txExecTest	3	616	~14	0	~14	~602
Sync Tests	2	18	~18	~9	~9	0
Other Tests	2	12	12	12	0	0
TOTAL	7	646	44	21	23	~602

Note: CI reports 47 tests run / 28 passed / 19 failed, suggesting some tests have multiple assertions or property-based test cases expanding the count.

Root Cause Analysis¶

Primary Issue: EIP-161 Test Fixture Incompatibility¶

Problem: PR #421 fixed the noEmptyAccounts EVM configuration bug but did NOT complete the test fixture updates.

Impact: 1. ForksTest: All 11 blocks fail state root validation 2. ContractTest: Block 3 fails state root validation
3. ECIP1017Test: Likely never runs due to earlier failures (602 blocks not executed) 4. Sync Tests: State root mismatches cascade to sync validation failures

Secondary Issue: Test Execution Halts Early¶

Behavior: ScalaTest stops suite execution on first failure within a test case.

Impact: - ECIP1017Test's 602 block executions never run - Subsequent test assertions within failed suites may not execute - True failure count may be higher than 19 reported

Recommendations¶

Immediate Actions¶

Update Test Fixtures (Priority: CRITICAL)
Regenerate fixtures for ForksTest (blocks 1-11)
Regenerate fixtures for ContractTest (blocks 1-3)
Regenerate fixtures for ECIP1017Test (blocks 1-602)
Use correct noEmptyAccounts EVM config per VM-007
Run ECIP1017Test (Priority: HIGH)
Currently not executing due to earlier failures
602 block validations are critical for monetary policy testing
Represents 93% of txExecTest coverage
Investigate Sync Test Failures (Priority: MEDIUM)
9 FastSync tests failing (root cause: likely state root propagation)
9 RegularSync tests failing (root cause: likely state root propagation)
May resolve automatically once txExecTest fixtures are fixed

Long-Term Solutions¶

Implement Fixture Generation Pipeline
Automate fixture updates when EVM behavior changes
Document process in docs/testing/TEST_FIXTURE_REGENERATION.md
Adopt ethereum/tests
Use official Ethereum test suite for blocks < 19.25M (pre-Spiral)
Reduces maintenance burden
See VM-007 Alternative Approach #2
Improve Test Isolation
Separate fixture-dependent tests from logic tests
Allow partial suite execution for faster feedback

Classification by Failure Type¶

Type 1: State Root Validation Errors (14+ failures)¶

Suites: ForksTest, ContractTest
Root Cause: Incorrect test fixtures (pre-PR #421 EVM behavior)
Fix: Regenerate fixtures with correct EIP-161 behavior
Impact: Blocks 93% of txExecTest coverage

Type 2: Sync Validation Errors (9 failures)¶

Suites: FastSyncItSpec, RegularSyncItSpec
Root Cause: State root mismatches cascading to sync logic
Fix: Likely resolves when Type 1 fixed
Impact: Entire sync integration test suite unusable

Type 3: Not Executed Due to Early Termination (602+ tests)¶

Suites: ECIP1017Test
Root Cause: ScalaTest halts on first suite failure
Fix: Fix Type 1 errors to allow execution
Impact: 93% of block execution tests never run

Summary¶

This analysis was instrumental in identifying test infrastructure improvements needed for the test suite. The recommendations from this analysis were used to improve test fixture generation and execution patterns.

For current test documentation, see: - Testing Documentation - Test Tagging Guide