Function assertRejectsReason

async/delay_test.ts:55–65

(reason: unknown)

Deno.test("delay() checks abort reason", async (ctx) => {
  async function assertRejectsReason(reason: unknown) {
    const start = new Date();
    const abort = new AbortController();
    const { signal } = abort;
    const delayedPromise = delay(100, { signal });
    setTimeout(() => abort.abort(reason), 0);
    const cause = await assertRejects(() => delayedPromise);
    const diff = new Date().getTime() - start.getTime();
    assert(diff < 100);
    assertStrictEquals(cause, reason);
  }

  await ctx.step("not-undefined values", async () => {
    await Promise.all([