P0.3.1 — Step 5 Verification

Test evidence for the β Task Pipeline FSM module. All four gate commands (npm ci, npm run lint, npm test, npm run build) pass clean on a freshly-cleaned working tree.

§1. Chain 

$ git log --oneline origin/main..HEAD
5f08b614 feat(p0-3-1-task-state-machine): β task pipeline FSM + tests
f5fbd8b8 packet(p0-3-1-task-state-machine): execution plan
c69780ca contract(p0-3-1-task-state-machine): behavioral contract
06d36a78 audit(p0-3-1-task-state-machine): inventory surface

All five 5-step documents + implementation commit plus this verification commit.

$ git diff --stat origin/main..HEAD   (pre-verification doc)
 docs/audits/p0-3-1-task-state-machine-audit.md    | 250 +++
 docs/contracts/p0-3-1-task-state-machine-contract.md | 303 +++
 docs/packets/p0-3-1-task-state-machine-packet.md  | 397 +++
 src/__tests__/task-state-machine.test.ts          | 330 +++
 src/domains/tasks/state-machine.ts                | 197 ++
 5 files changed, 1477 insertions(+)

The verification commit adds this doc (~250 lines), bringing the final delta to ~1727 insertions across 6 files. No deletions.

§2. Gate commands

Executed in order on a cleaned tree (rm -rf node_modules coverage dist).

2.1 npm ci 

$ npm ci
added 513 packages, and audited 514 packages in 26s
105 packages are looking for funding
  run `npm fund` for details
found 0 vulnerabilities

Exit 0. Zero vulnerabilities. No package-lock.json modification (read-only install).

2.2 npm run lint 

$ npm run lint
> colibri@0.0.1 lint
> eslint src

Exit 0. No warnings, no errors. Every file in src/ — including the new src/domains/tasks/state-machine.ts and src/__tests__/task-state-machine.test.ts — passes the repo ESLint config (@typescript-eslint/consistent-type-imports, curly: all, eqeqeq: always, no-explicit-any, test-file overrides).

2.3 npm test

Full-suite coverage summary:

-------------------|---------|----------|---------|---------|-------------------
File               | % Stmts | % Branch | % Funcs | % Lines | Uncovered Line #s
-------------------|---------|----------|---------|---------|-------------------
All files          |   99.14 |     93.4 |     100 |   99.13 |
 src               |   98.62 |    92.75 |     100 |    98.6 |
  config.ts        |     100 |       80 |     100 |     100 | 78
  modes.ts         |     100 |      100 |     100 |     100 |
  server.ts        |   98.21 |    92.59 |     100 |   98.19 | 552,558
 src/db            |     100 |       95 |     100 |     100 |
  index.ts         |     100 |       95 |     100 |     100 | 276
 src/domains/tasks |     100 |      100 |     100 |     100 |
  state-machine.ts |     100 |      100 |     100 |     100 |
-------------------|---------|----------|---------|---------|-------------------

Test Suites: 6 passed, 6 total
Tests:       300 passed, 300 total
Snapshots:   0 total
Time:        15.562 s

Target file src/domains/tasks/state-machine.ts hits 100% / 100% / 100% / 100% — stmt / branch / func / line. No uncovered lines.

Isolated test-file summary (npx jest src/__tests__/task-state-machine.test.ts):

Test Suites: 1 passed, 1 total
Tests:       182 passed, 182 total
Time:        14.022 s

The new suite contributes 182 tests to the global pool (jumping from 118 → 300 total across the repo).

Pre-existing suites (118 tests across config.test.ts, db-init.test.ts, modes.test.ts, server.test.ts, smoke.test.ts) continue to pass unchanged. No regressions.

2.4 npm run build 

$ npm run build
> colibri@0.0.1 build
> tsc

Exit 0. TypeScript strict: true + noUncheckedIndexedAccess + exactOptionalPropertyTypes all enforced. No errors, no warnings. The compile-time const _STATE_COUNT: 8 = TASK_STATES.length as 8; self-check passes — tuple length is exactly 8, as required.

§3. Coverage audit — branch by branch

Every branch in state-machine.ts enumerated and mapped to the test that drives it. All six logical branches verified as hit:

Branch ID Location Description Driven by
B1 canTransition line 145 allowed === undefined → truthy (known TaskState) 13 VALID_EDGES + 64-pair iteration
B2 canTransition line 145 allowed === undefined → falsy (bogus state) canTransition('__bogus__' as TaskState, 'INIT') + 2 sibling defensive tests
B3 canTransition line 148 allowed.has(to) → true (edge allowed) 13 it.each(VALID_EDGES) assertions
B4 canTransition line 148 allowed.has(to) → false (edge disallowed) 51 invalid-edge assertions
B5 transition line 165 !canTransition(...) → true (throw) 51 invalid-edge throws + 16 terminal-exit throws
B6 transition line 165 !canTransition(...) → false (return) 13 valid-edge returns

Istanbul reports 100% branch — verified via the % Branch column of the coverage table in §2.3.

§4. Acceptance criteria trace

Each line from the task prompt’s “Acceptance criteria” block verified:

# Criterion Verified by
1 7 states + CANCELLED terminal side-branch, INIT → GATHER → ANALYZE → PLAN → APPLY → VERIFY → DONE TASK_STATES test block (3 its) + VALID_TRANSITIONS block (6 its)
2 Transition map matches canonical diagram VALID_TRANSITIONS block — “total edge count is 13”, “VERIFY has the retry edge to GATHER”, “every non-terminal state can transition to CANCELLED”
3 Unlisted transitions throw InvalidTransitionError with {from, to, taskId} transition block — 51 invalid-edge throws + “thrown error carries from, to, and taskId”
4 transition(task, newState) returns updated task or throws transition block — 13 happy paths (“advances task from %s to %s and returns a new object”) + 51 throw paths
5 canTransition(from, to) returns boolean, no side effects canTransition block — 13 valid + 51 invalid + 8 self-loops + “is pure — repeated calls return the same value” + 3 defensive
6 DONE is terminal; any transition out throws terminal exits > DONE is terminal block — 8 transition throws + 8 canTransition false
7 CANCELLED is terminal; any transition out throws terminal exits > CANCELLED is terminal block — 8 transition throws + 8 canTransition false
8 100% branch coverage §2.3 coverage table — state-machine.ts row reads 100 | 100 | 100 | 100

§5. Spec deviations

  1. Test path deviation (Sigma-pre-approved). The task spec originally lists tests/domains/tasks/state-machine.test.ts; the Wave A load-bearing lock fixes the convention at src/__tests__/<module>.test.ts because Jest roots: ['<rootDir>/src'] (jest.config.ts line 15). Resolved in the audit (§1) + contract (header) + packet (§3); test file landed at src/__tests__/task-state-machine.test.ts. No functional deviation.
  2. No spec-breaking deviations otherwise.

§6. Blockers

None. All gate commands green; all acceptance criteria verified; coverage at 100% on the target file; no regressions in the existing 118-test suite.

§7. Post-merge follow-ups (out of scope for P0.3.1)

Flagged during the audit but outside this task:

  1. Donor kanban drift in docs/guides/implementation/task-prompts/p0.3-beta-task-pipeline.md (lines 41–43, 74) — the prompt file still lists the donor kanban states. Flagged for a future docs-polish task. Not touched here (parallel lock).
  2. src/domains/tasks/repository.ts (P0.3.2 next wave) will define the full TaskRow shape (timestamps, writer, retry_count, metadata) and wire transition to SQLite writes. The generic transition<T extends TaskShape> accepts any superset — no API break anticipated.
  3. task_transition MCP tool (P0.3.4) will wrap transition + InvalidTransitionError into the s17 error envelope. No changes to this module required.

§8. Summary

  • 5 commits on feature branch (audit, contract, packet, implement, verify).
  • +1727 / −0 lines across 6 new files; zero existing files touched.
  • 100% / 100% / 100% / 100% on src/domains/tasks/state-machine.ts.
  • 182 new tests in the task-state-machine suite; 300 tests total across the repo (up from 118).
  • No regressions, no lint warnings, no type errors, no vulnerabilities.
  • No spec deviations beyond the Sigma-pre-approved test-path convention.

Ready for Sigma merge.

Back to top

Colibri — documentation-first MCP runtime. Apache 2.0 + Commons Clause.

This site uses Just the Docs, a documentation theme for Jekyll.