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import { assert } from "./test_deps.ts";import { delay } from "./test_deps.ts";import { Mutex } from "./mod.ts";
Deno.test("tasks do not overlap", async () => {  var m = new Mutex();  var task1running = false;  var task2running = false;  var task1ran = false;  var task2ran = false;  await Promise.all([    m.acquire()      .then((release) => {        task1running = true;        task1ran = true;        return delay(10)          .then(() => {            assert(!task2running);            task1running = false;            release();          });      }),    m.acquire()      .then((release) => {        assert(!task1running);        task2running = true;        task2ran = true;        return delay(10)          .then(() => {            task2running = false;            release();          });      }),  ])    .then(() => {      assert(!task1running);      assert(!task2running);      assert(task1ran);      assert(task2ran);    })    .catch();});