Expose TestScheduler as global

This commit is contained in:
Hugh Nimmo-Smith 2024-11-18 18:02:37 +00:00
parent 09de97637c
commit 23579b2ab1

View File

@ -4,7 +4,7 @@ Copyright 2023, 2024 New Vector Ltd.
SPDX-License-Identifier: AGPL-3.0-only
Please see LICENSE in the repository root for full details.
*/
import { map, Observable, of } from "rxjs";
import { map, Observable, of, SchedulerLike } from "rxjs";
import { RunHelpers, TestScheduler } from "rxjs/testing";
import { expect, vi } from "vitest";
import {
@ -52,15 +52,23 @@ export interface OurRunHelpers extends RunHelpers {
schedule: (marbles: string, actions: Record<string, () => void>) => void;
}
interface TestRunnerGlobal {
rxjsTestScheduler?: SchedulerLike;
}
/**
* Run Observables with a scheduler that virtualizes time, for testing purposes.
*/
export function withTestScheduler(
continuation: (helpers: OurRunHelpers) => void,
): void {
new TestScheduler((actual, expected) => {
const scheduler = new TestScheduler((actual, expected) => {
expect(actual).deep.equals(expected);
}).run((helpers) =>
});
// we set the test scheduler as a global so that you can watch it in a debugger
// and get the frame number. e.g. `rxjsTestScheduler?.now()`
(global as unknown as TestRunnerGlobal).rxjsTestScheduler = scheduler;
scheduler.run((helpers) =>
continuation({
...helpers,
schedule(marbles, actions) {