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Expose TestScheduler as global

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Hugh Nimmo-Smith 2024-11-18 18:02:37 +00:00
parent 09de97637c
commit 23579b2ab1
1 changed files with 11 additions and 3 deletions
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14
src/utils/test.ts
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@ -4,7 +4,7 @@ Copyright 2023, 2024 New Vector Ltd.
SPDX-License-Identifier: AGPL-3.0-only SPDX-License-Identifier: AGPL-3.0-only
Please see LICENSE in the repository root for full details. 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 { RunHelpers, TestScheduler } from "rxjs/testing";
import { expect, vi } from "vitest"; import { expect, vi } from "vitest";
import { import {
@ -52,15 +52,23 @@ export interface OurRunHelpers extends RunHelpers {
schedule: (marbles: string, actions: Record<string, () => void>) => void; schedule: (marbles: string, actions: Record<string, () => void>) => void;
} }
interface TestRunnerGlobal {
rxjsTestScheduler?: SchedulerLike;
}
/** /**
* Run Observables with a scheduler that virtualizes time, for testing purposes. * Run Observables with a scheduler that virtualizes time, for testing purposes.
*/ */
export function withTestScheduler( export function withTestScheduler(
continuation: (helpers: OurRunHelpers) => void, continuation: (helpers: OurRunHelpers) => void,
): void { ): void {
new TestScheduler((actual, expected) => { const scheduler = new TestScheduler((actual, expected) => {
expect(actual).deep.equals(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({ continuation({
...helpers, ...helpers,
schedule(marbles, actions) { schedule(marbles, actions) {