puppeteer/test/worker.spec.js
Joel Einbinder 2ff0adcad8 feat: worker convenience methods (#2677)
This patch:
- adds `worker.evaluate` and `worker.evaluateHandle` methods as a shortcut to their execution context equivalents.
- makes the error messages a bit nicer when interacting with a closed worker (as opposed to a closed page).
- moves the worker tests into their own spec file.
2018-06-06 20:16:17 -05:00

44 lines
2.1 KiB
JavaScript

module.exports.addTests = function({testRunner, expect}) {
const {describe, xdescribe, fdescribe} = testRunner;
const {it, fit, xit} = testRunner;
const {beforeAll, beforeEach, afterAll, afterEach} = testRunner;
describe('Workers', function() {
it('Page.workers', async function({page, server}) {
await Promise.all([
new Promise(x => page.once('workercreated', x)),
page.goto(server.PREFIX + '/worker/worker.html')]);
const worker = page.workers()[0];
expect(worker.url()).toContain('worker.js');
expect(await worker.evaluate(() => self.workerFunction())).toBe('worker function result');
await page.goto(server.EMPTY_PAGE);
expect(page.workers()).toEqual([]);
});
it('should emit created and destroyed events', async function({page}) {
const workerCreatedPromise = new Promise(x => page.once('workercreated', x));
const workerObj = await page.evaluateHandle(() => new Worker('data:text/javascript,1'));
const worker = await workerCreatedPromise;
const workerThisObj = await worker.evaluateHandle(() => this);
const workerDestroyedPromise = new Promise(x => page.once('workerdestroyed', x));
await page.evaluate(workerObj => workerObj.terminate(), workerObj);
expect(await workerDestroyedPromise).toBe(worker);
const error = await workerThisObj.getProperty('self').catch(error => error);
expect(error.message).toContain('Most likely the worker has been closed.');
});
it('should report console logs', async function({page}) {
const logPromise = new Promise(x => page.on('console', x));
await page.evaluate(() => new Worker(`data:text/javascript,console.log(1)`));
const log = await logPromise;
expect(log.text()).toBe('1');
});
it('should have an execution context', async function({page}) {
const workerCreatedPromise = new Promise(x => page.once('workercreated', x));
await page.evaluate(() => new Worker(`data:text/javascript,console.log(1)`));
const worker = await workerCreatedPromise;
expect(await (await worker.executionContext()).evaluate('1+1')).toBe(2);
});
});
};