233 lines
9.6 KiB
JavaScript
233 lines
9.6 KiB
JavaScript
// tests/hooks/agent-cap.test.mjs
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// Step 10 — pins hooks/scripts/pre-agent-cap.mjs, the PreToolUse enforcement
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// of the /trekresearch Phase 5 loop bound.
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//
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// The spike (docs/spike-pretooluse-subagent-reach.md, RESULT: FIRES) proved a
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// plugin PreToolUse hook observes sub-agent tool calls, so the cap can be
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// enforced rather than merely documented. This file pins the two properties
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// that matter in opposite directions:
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//
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// (a) it DENIES (exit 2) once the ledger shows the budget spent, and
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// (b) it does NOT over-block — an unrelated session, unparsable stdin, a
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// stale marker, or the kill switch all exit 0.
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//
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// Pattern: tests/hooks/bash-guard.test.mjs (child process via runHook).
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import { test } from 'node:test';
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import { strict as assert } from 'node:assert';
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import { dirname, join } from 'node:path';
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import { fileURLToPath } from 'node:url';
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import { mkdtempSync, mkdirSync, writeFileSync, readFileSync } from 'node:fs';
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import { tmpdir } from 'node:os';
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import { runHookWithEnv } from '../helpers/hook-helper.mjs';
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const HERE = dirname(fileURLToPath(import.meta.url));
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const ROOT = join(HERE, '..', '..');
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const CAP_HOOK = join(ROOT, 'hooks', 'scripts', 'pre-agent-cap.mjs');
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const HOOKS_JSON = join(ROOT, 'hooks', 'hooks.json');
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const SESSION = 'sess-abc123';
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const RUN_ID = 'run-xyz789';
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/**
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* Build a throwaway CLAUDE_PLUGIN_DATA dir holding a scope marker for
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* `sessionId` and `turns` ledger entries for RUN_ID.
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*/
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function fixture({ turns = 0, sessionId = SESSION, startedAt = new Date() } = {}) {
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const dir = mkdtempSync(join(tmpdir(), 'voyage-cap-'));
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mkdirSync(join(dir, 'trekresearch-loop-scope'), { recursive: true });
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writeFileSync(
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join(dir, 'trekresearch-loop-scope', `${sessionId}.json`),
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JSON.stringify({ runId: RUN_ID, startedAt: startedAt.toISOString() }),
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);
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const ledger = Array.from({ length: turns }, (_, i) =>
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JSON.stringify({ ts: new Date().toISOString(), runId: RUN_ID, dimension: `d${i}`, effort: 'high' }),
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).join('\n');
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writeFileSync(join(dir, 'trekresearch-loop-ledger.jsonl'), ledger ? ledger + '\n' : '');
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return dir;
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}
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// TREKRESEARCH_MAX_CONV_TURNS=1 => budget = 1 * MAX_TOTAL_DIMENSIONS (8).
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const CAPPED_ENV = { VOYAGE_STORM_ENABLED: '1', TREKRESEARCH_MAX_CONV_TURNS: '1' };
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const BUDGET = 8;
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function searchInput(sessionId = SESSION) {
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return {
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session_id: sessionId,
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hook_event_name: 'PreToolUse',
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tool_name: 'WebSearch',
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tool_input: { query: 'claude code hooks reference' },
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agent_id: 'aa6d19525a4680fe0',
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agent_type: 'general-purpose',
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};
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}
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// -----------------------------------------------------------------------
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// DENY — budget spent
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// -----------------------------------------------------------------------
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test('pre-agent-cap DENIES a loop turn once the ledger shows the budget spent', async () => {
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const dir = fixture({ turns: BUDGET });
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const { code, stderr } = await runHookWithEnv(CAP_HOOK, searchInput(), {
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...CAPPED_ENV,
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CLAUDE_PLUGIN_DATA: dir,
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});
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assert.strictEqual(code, 2);
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assert.match(stderr, /loop cap/i, 'stderr must name the cap it enforced');
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assert.match(stderr, new RegExp(`${BUDGET}`), 'stderr must state the budget');
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});
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test('pre-agent-cap DENIES above the budget too (used > budget)', async () => {
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const dir = fixture({ turns: BUDGET + 5 });
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const { code } = await runHookWithEnv(CAP_HOOK, searchInput(), {
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...CAPPED_ENV,
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CLAUDE_PLUGIN_DATA: dir,
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});
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assert.strictEqual(code, 2);
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});
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// -----------------------------------------------------------------------
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// ALLOW — under the cap
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// -----------------------------------------------------------------------
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test('pre-agent-cap ALLOWS a loop turn under the budget', async () => {
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const dir = fixture({ turns: BUDGET - 1 });
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const { code } = await runHookWithEnv(CAP_HOOK, searchInput(), {
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...CAPPED_ENV,
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CLAUDE_PLUGIN_DATA: dir,
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});
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assert.strictEqual(code, 0);
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});
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// -----------------------------------------------------------------------
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// DOES NOT OVER-BLOCK — the property that keeps this hook safe to wire
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// globally. A broken PreToolUse hook would brick every session on the box.
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// -----------------------------------------------------------------------
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test('pre-agent-cap ALLOWS an unrelated session even when a loop is exhausted', async () => {
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const dir = fixture({ turns: BUDGET });
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const { code } = await runHookWithEnv(CAP_HOOK, searchInput('some-other-session'), {
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...CAPPED_ENV,
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CLAUDE_PLUGIN_DATA: dir,
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});
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assert.strictEqual(code, 0, 'no scope marker for this session_id => out of scope');
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});
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test('pre-agent-cap ALLOWS when no scope marker directory exists at all', async () => {
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const dir = mkdtempSync(join(tmpdir(), 'voyage-cap-empty-'));
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const { code } = await runHookWithEnv(CAP_HOOK, searchInput(), {
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...CAPPED_ENV,
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CLAUDE_PLUGIN_DATA: dir,
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});
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assert.strictEqual(code, 0);
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});
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test('pre-agent-cap ALLOWS on unparsable stdin', async () => {
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const dir = fixture({ turns: BUDGET });
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const { code } = await runHookWithEnv(CAP_HOOK, 'not json at all', {
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...CAPPED_ENV,
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CLAUDE_PLUGIN_DATA: dir,
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});
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assert.strictEqual(code, 0);
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});
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test('pre-agent-cap ALLOWS when the input carries no session_id', async () => {
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const dir = fixture({ turns: BUDGET });
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const input = searchInput();
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delete input.session_id;
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const { code } = await runHookWithEnv(CAP_HOOK, input, {
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...CAPPED_ENV,
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CLAUDE_PLUGIN_DATA: dir,
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});
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assert.strictEqual(code, 0);
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});
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// -----------------------------------------------------------------------
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// TTL / auto-reset — a marker left behind by a crashed run must not deny
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// tool calls forever.
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// -----------------------------------------------------------------------
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test('pre-agent-cap ALLOWS when the scope marker is older than the TTL', async () => {
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const dir = fixture({ turns: BUDGET, startedAt: new Date(Date.now() - 48 * 3600 * 1000) });
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const { code } = await runHookWithEnv(CAP_HOOK, searchInput(), {
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...CAPPED_ENV,
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CLAUDE_PLUGIN_DATA: dir,
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VOYAGE_CAP_SCOPE_TTL_MS: '1000',
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});
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assert.strictEqual(code, 0, 'a stale marker must auto-reset, not deny forever');
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});
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// -----------------------------------------------------------------------
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// Kill switch + default-off
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// -----------------------------------------------------------------------
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test('pre-agent-cap kill switch VOYAGE_DISABLE_CAP_HOOK=1 allows an exhausted loop', async () => {
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const dir = fixture({ turns: BUDGET });
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const { code } = await runHookWithEnv(CAP_HOOK, searchInput(), {
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...CAPPED_ENV,
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CLAUDE_PLUGIN_DATA: dir,
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VOYAGE_DISABLE_CAP_HOOK: '1',
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});
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assert.strictEqual(code, 0);
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});
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test('pre-agent-cap is inert when VOYAGE_STORM_ENABLED is not 1 (default-off)', async () => {
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const dir = fixture({ turns: BUDGET });
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const { code } = await runHookWithEnv(CAP_HOOK, searchInput(), {
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...CAPPED_ENV,
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VOYAGE_STORM_ENABLED: '0',
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CLAUDE_PLUGIN_DATA: dir,
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});
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assert.strictEqual(code, 0);
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});
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// -----------------------------------------------------------------------
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// Fail-closed inside scope — in scope but the ledger is unreachable means
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// the hook cannot count, and a cap that cannot count must not grant.
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// -----------------------------------------------------------------------
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test('pre-agent-cap DENIES in scope when CLAUDE_PLUGIN_DATA is absent', async () => {
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const dir = fixture({ turns: 0 });
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const { code, stderr } = await runHookWithEnv(CAP_HOOK, searchInput(), {
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...CAPPED_ENV,
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CLAUDE_PLUGIN_DATA: '',
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VOYAGE_CAP_SCOPE_DIR: dir,
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});
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assert.strictEqual(code, 2);
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assert.match(stderr, /CLAUDE_PLUGIN_DATA/, 'stderr must name the missing variable');
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});
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// -----------------------------------------------------------------------
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// Append-only counting — the hook reads the ledger, it never writes it.
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// Writing per tool call would make the cap count its own enforcement.
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// -----------------------------------------------------------------------
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test('pre-agent-cap never writes to the ledger', async () => {
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const dir = fixture({ turns: 2 });
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const ledgerPath = join(dir, 'trekresearch-loop-ledger.jsonl');
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const before = readFileSync(ledgerPath, 'utf-8');
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await runHookWithEnv(CAP_HOOK, searchInput(), { ...CAPPED_ENV, CLAUDE_PLUGIN_DATA: dir });
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assert.strictEqual(readFileSync(ledgerPath, 'utf-8'), before);
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});
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// -----------------------------------------------------------------------
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// Wiring — pattern from tests/hooks/hooks-json-stop-wired.test.mjs
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// -----------------------------------------------------------------------
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function invocationOf(h) {
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return [h.command || '', ...(h.args || [])].join(' ').trim();
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}
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test('hooks.json wires pre-agent-cap.mjs on PreToolUse with ${CLAUDE_PLUGIN_ROOT}', () => {
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const cfg = JSON.parse(readFileSync(HOOKS_JSON, 'utf8'));
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const invocations = (cfg.hooks.PreToolUse || []).flatMap((entry) =>
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(entry.hooks || []).map(invocationOf),
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);
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const capInvocation = invocations.find((cmd) => cmd.includes('pre-agent-cap.mjs'));
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assert.ok(capInvocation, `no PreToolUse hook references pre-agent-cap.mjs. Found: ${JSON.stringify(invocations)}`);
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assert.match(capInvocation, /\$\{CLAUDE_PLUGIN_ROOT\}/, 'relative paths fail in headless sessions');
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assert.match(capInvocation, /^node\s+/);
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});
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test('hooks.json matcher for pre-agent-cap covers the loop’s outbound surface', () => {
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const cfg = JSON.parse(readFileSync(HOOKS_JSON, 'utf8'));
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const entry = (cfg.hooks.PreToolUse || []).find((e) =>
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(e.hooks || []).some((h) => invocationOf(h).includes('pre-agent-cap.mjs')),
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);
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assert.ok(entry, 'pre-agent-cap entry missing from PreToolUse');
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for (const tool of ['WebSearch', 'WebFetch', 'Task']) {
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assert.match(entry.matcher, new RegExp(tool), `matcher must cover ${tool}`);
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}
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});
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