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joplin/packages/lib/TaskQueue.test.js
2022-11-15 10:23:50 +00:00

51 lines
1.4 KiB
JavaScript

const { setupDatabaseAndSynchronizer, sleep, switchClient } = require('./testing/test-utils.js');
const TaskQueue = require('./TaskQueue').default;
describe('TaskQueue', function() {
beforeEach(async () => {
await setupDatabaseAndSynchronizer(1);
await switchClient(1);
});
it('should queue and execute tasks', (async () => {
const queue = new TaskQueue();
queue.push(1, async () => { await sleep(0.5); return 'a'; });
queue.push(2, async () => { await sleep(0.5); return 'b'; });
queue.push(3, async () => { await sleep(0.5); return 'c'; });
const results = [];
results.push(await queue.waitForResult(1));
results.push(await queue.waitForResult(2));
results.push(await queue.waitForResult(3));
expect(results[0].id).toBe(1);
expect(results[0].result).toBe('a');
expect(results[1].id).toBe(2);
expect(results[1].result).toBe('b');
expect(results[2].id).toBe(3);
expect(results[2].result).toBe('c');
}));
it('should handle errors', (async () => {
const queue = new TaskQueue();
queue.push(1, async () => { await sleep(0.5); return 'a'; });
queue.push(2, async () => { await sleep(0.5); throw new Error('e'); });
const results = [];
results.push(await queue.waitForResult(1));
results.push(await queue.waitForResult(2));
expect(results[0].id).toBe(1);
expect(results[0].result).toBe('a');
expect(results[1].id).toBe(2);
expect(!results[1].result).toBe(true);
expect(results[1].error.message).toBe('e');
}));
});