48 lines
2.1 KiB
TypeScript
48 lines
2.1 KiB
TypeScript
/**
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* Runtime invariant companion: the 'slots/changed' emission-order audit —
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* a fired key must already carry a bumped version (emission follows the
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* applied mutation), bogus payloads fail loud, foreign events pass.
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*/
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import { Context } from 'cordis'
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import { describe, expect, it } from 'vitest'
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import InvariantService from '@deepseek-ai/dsh-invariants'
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import * as RuntimeInvariant from '../src/invariant.ts'
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import { SlotsService } from '../src/client/slots.ts'
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async function setup(): Promise<Context> {
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const ctx = new Context()
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await ctx.plugin(InvariantService, { enabled: true })
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await ctx.plugin(RuntimeInvariant).await()
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return ctx
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}
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const emit = (ctx: Context, event: string, ...args: unknown[]): void => {
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;(ctx.emit as (event: string, ...args: unknown[]) => void)(event, ...args)
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}
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describe('runtime slots/changed invariant', () => {
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it('passes foreign events and a legitimate mutation-then-emission sequence', async () => {
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const ctx = await setup()
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expect(() => { emit(ctx, 'unrelated/event', 'x') }).not.toThrow()
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await ctx.plugin(SlotsService).await() // fiber must reach ACTIVE — the audit reads strict ctx.get
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// A real define bumps the version first and re-emits through onMutate —
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// the audit sees version > 0 and stays quiet.
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expect(() => ctx.slots.define('t-single', { kind: 'single', scope: 'root' })).not.toThrow()
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})
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it('fails loud on a missing key and on an emission with no applied mutation', async () => {
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const ctx = await setup()
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expect(() => { emit(ctx, 'slots/changed', '') }).toThrow(/without a slot key/)
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expect(() => { emit(ctx, 'slots/changed', 42) }).toThrow(/without a slot key/)
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await ctx.plugin(SlotsService).await()
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// Hand-emitted key that never saw a mutation: version 0 → violation.
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expect(() => { emit(ctx, 'slots/changed', 'never-mutated') })
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.toThrow(/before any mutation bumped its version/)
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})
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it('stays quiet when no slots service is mounted (nothing to audit against)', async () => {
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const ctx = await setup()
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expect(() => { emit(ctx, 'slots/changed', 'any-key') }).not.toThrow()
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})
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})
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