@exadel/esl/modules/esl-utils/async/test/promise/raf.test.js

Exadel Smart Library (ESL) is the lightweight custom elements library that provide a set of super-flexible components

var __awaiter = (this && this.__awaiter) || function (thisArg, _arguments, P, generator) {
    function adopt(value) { return value instanceof P ? value : new P(function (resolve) { resolve(value); }); }
    return new (P || (P = Promise))(function (resolve, reject) {
        function fulfilled(value) { try { step(generator.next(value)); } catch (e) { reject(e); } }
        function rejected(value) { try { step(generator["throw"](value)); } catch (e) { reject(e); } }
        function step(result) { result.done ? resolve(result.value) : adopt(result.value).then(fulfilled, rejected); }
        step((generator = generator.apply(thisArg, _arguments || [])).next());
    });
};
import { RAFMock } from '../../../test/raf.mock';
import { promisifyNextRender } from '../../promise/raf';
describe('async/promise/raf', () => {
    beforeAll(() => {
        RAFMock.applyMock();
        RAFMock.instance.reset();
    });
    test('promisifyNextRender fullfiled as soon as next render tick (via requestAnimationFrame) occurs', () => __awaiter(void 0, void 0, void 0, function* () {
        let resolved;
        promisifyNextRender().then(() => resolved = true, () => resolved = false);
        yield Promise.resolve();
        expect(resolved).toBe(undefined);
        RAFMock.instance.triggerNextAnimationFrame();
        yield Promise.resolve();
        expect(resolved).toBe(undefined);
        RAFMock.instance.triggerNextAnimationFrame();
        yield Promise.resolve();
        expect(resolved).toBe(true);
    }));
});