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https://github.com/bilawalsidhu/gods-eye-view.git
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25 lines
1.1 KiB
JavaScript
25 lines
1.1 KiB
JavaScript
import test from 'node:test';
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import assert from 'node:assert/strict';
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import { createSourceSlot } from './sourceSlot.js';
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test('replacing a source rejects its late result and old cleanup cannot clear the new source', async () => {
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let finish;
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const slot = createSourceSlot({ read: async () => 'default' }, ['read']);
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const old = slot.configure({ read: () => new Promise(resolve => { finish = resolve; }) });
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const pending = slot.source.read();
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const stop = slot.configure({ read: async () => 'replacement', attribution: { name: 'Replacement' } });
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old();
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finish('stale');
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await assert.rejects(pending, { name: 'AbortError' });
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assert.equal(await slot.source.read(), 'replacement');
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assert.equal(slot.source.attribution.name, 'Replacement');
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stop();
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assert.throws(() => slot.source.read(), /not configured/);
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});
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test('an invalid replacement leaves the working source intact', async () => {
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const slot = createSourceSlot({ read: async () => 42 }, ['read']);
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assert.throws(() => slot.configure({}), TypeError);
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assert.equal(await slot.source.read(), 42);
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});
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