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stack/packages/mosaic/src/mutator-gate/pi-compaction-lifecycle.spec.ts
jason.woltje e4d7d4502d
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WI-3 (#830): compaction observers → revoke + D4 same-PID generation auto-revoke (#842)
2026-07-19 19:46:28 +00:00

128 lines
4.1 KiB
TypeScript

import { describe, expect, test } from 'vitest';
type LifecycleRunner = (args: string[]) => boolean;
type LifecycleRegister = (api: unknown, runner: LifecycleRunner) => void;
type Handler = (event: Record<string, unknown>, ctx: Record<string, unknown>) => unknown;
const lifecycleModuleUrl = new URL('../../framework/runtime/pi/lease-lifecycle.ts', import.meta.url)
.href;
const { registerLeaseLifecycleHooks } = (await import(lifecycleModuleUrl)) as {
registerLeaseLifecycleHooks: LifecycleRegister;
};
function fakePi() {
const handlers = new Map<string, Handler[]>();
return {
handlers,
api: {
on(event: string, handler: Handler) {
handlers.set(event, [...(handlers.get(event) ?? []), handler]);
},
},
async emit(event: string, value: Record<string, unknown> = {}) {
const results = [];
for (const handler of handlers.get(event) ?? []) {
results.push(await handler(value, {}));
}
return results;
},
};
}
describe('Pi compaction and runtime-generation lease lifecycle', () => {
test('pre-compaction and first post-compaction context independently revoke', async () => {
const pi = fakePi();
const calls: string[][] = [];
registerLeaseLifecycleHooks(pi.api as never, (args) => {
calls.push(args);
return true;
});
expect(await pi.emit('session_before_compact', { reason: 'threshold' })).toEqual([undefined]);
expect(calls.at(-1)).toEqual([
'--runtime',
'pi',
'--reason',
'pi-session-before-compact:threshold',
]);
await pi.emit('session_compact', { reason: 'threshold' });
await pi.emit('context', { messages: [] });
expect(calls.at(-1)).toEqual([
'--runtime',
'pi',
'--reason',
'pi-context-after-compact:threshold',
]);
const afterFirstContext = calls.length;
await pi.emit('context', { messages: [] });
expect(calls).toHaveLength(afterFirstContext);
});
test.each(['reload', 'new', 'resume', 'fork'])(
'%s bumps generation before reuse',
async (reason) => {
const pi = fakePi();
const calls: string[][] = [];
registerLeaseLifecycleHooks(pi.api as never, (args) => {
calls.push(args);
return true;
});
await pi.emit('session_start', { reason });
expect(calls).toEqual([
['--runtime', 'pi', '--reason', `pi-session-start:${reason}`, '--bump-generation'],
]);
},
);
test('startup leaves the launcher generation intact and tools locally open', async () => {
const pi = fakePi();
const calls: string[][] = [];
registerLeaseLifecycleHooks(pi.api as never, (args) => {
calls.push(args);
return true;
});
await pi.emit('session_start', { reason: 'startup' });
await pi.emit('session_start');
expect(calls).toEqual([]);
expect(await pi.emit('tool_call', { toolName: 'bash' })).toEqual([undefined]);
});
test('failed post-compaction revoke blocks tools until context retries successfully', async () => {
const pi = fakePi();
const outcomes = [false, true];
registerLeaseLifecycleHooks(pi.api as never, () => outcomes.shift() ?? true);
await pi.emit('session_compact');
await pi.emit('context');
expect(await pi.emit('tool_call', { toolName: 'bash' })).toEqual([
{
block: true,
reason: expect.stringContaining('lease lifecycle revoke failed'),
},
]);
await pi.emit('context');
expect(await pi.emit('tool_call', { toolName: 'bash' })).toEqual([undefined]);
});
test('failed lifecycle revoke cancels compaction and closes later tool calls', async () => {
const pi = fakePi();
registerLeaseLifecycleHooks(pi.api as never, () => false);
const compact = await pi.emit('session_before_compact', { reason: 'manual' });
expect(compact).toEqual([{ cancel: true }]);
await pi.emit('session_start', { reason: 'resume' });
const tool = await pi.emit('tool_call', { toolName: 'bash' });
expect(tool).toEqual([
{
block: true,
reason: expect.stringContaining('lease lifecycle revoke failed'),
},
]);
});
});