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import { it, expect } from "bun:test";
it("setTimeout", async () => {
var lastID = -1;
const result = await new Promise((resolve, reject) => {
var numbers = [];
for (let i = 0; i < 10; i++) {
const id = setTimeout(
(...args) => {
numbers.push(i);
if (i === 9) {
resolve(numbers);
}
try {
expect(args).toStrictEqual(["foo"]);
} catch (err) {
reject(err);
}
},
i,
"foo",
);
expect(+id > lastID).toBe(true);
lastID = id;
}
});
for (let j = 0; j < result.length; j++) {
expect(result[j]).toBe(j);
}
expect(result.length).toBe(10);
});
it("clearTimeout", async () => {
var called = false;
// as object
{
const id = setTimeout(() => {
called = true;
expect(false).toBe(true);
}, 0);
clearTimeout(id);
// assert it doesn't crash if you call clearTimeout twice
clearTimeout(id);
}
// as number
{
const id = setTimeout(() => {
called = true;
expect(false).toBe(true);
}, 0);
clearTimeout(+id);
// assert it doesn't crash if you call clearTimeout twice
clearTimeout(+id);
}
await new Promise((resolve, reject) => {
setTimeout(resolve, 10);
});
expect(called).toBe(false);
});
it("setTimeout(() => {}, 0)", async () => {
var called = false;
setTimeout(() => {
called = true;
}, 0);
await new Promise((resolve, reject) => {
setTimeout(() => {
resolve();
}, 10);
});
expect(called).toBe(true);
var ranFirst = -1;
setTimeout(() => {
if (ranFirst === -1) ranFirst = 1;
}, 1);
setTimeout(() => {
if (ranFirst === -1) ranFirst = 0;
}, 0);
await new Promise((resolve, reject) => {
setTimeout(() => {
resolve();
}, 10);
});
expect(ranFirst).toBe(0);
ranFirst = -1;
const id = setTimeout(() => {
ranFirst = 0;
}, 0);
clearTimeout(id);
await new Promise((resolve, reject) => {
setTimeout(() => {
resolve();
}, 10);
});
expect(ranFirst).toBe(-1);
});
it("Bun.sleep", async () => {
var sleeps = 0;
await Bun.sleep(0);
const start = performance.now();
sleeps++;
await Bun.sleep(1);
sleeps++;
await Bun.sleep(2);
sleeps++;
const end = performance.now();
expect((end - start) * 1000).toBeGreaterThanOrEqual(3);
expect(sleeps).toBe(3);
});
it("Bun.sleep propagates exceptions", async () => {
try {
await Bun.sleep(1).then(a => {
throw new Error("TestPassed");
});
throw "Should not reach here";
} catch (err) {
expect(err.message).toBe("TestPassed");
}
});
it("Bun.sleep works with a Date object", async () => {
var ten_ms = new Date();
ten_ms.setMilliseconds(ten_ms.getMilliseconds() + 12);
const now = performance.now();
await Bun.sleep(ten_ms);
expect(performance.now() - now).toBeGreaterThanOrEqual(10);
});
it("node.js timers/promises setTimeout propagates exceptions", async () => {
const { setTimeout } = require("timers/promises");
try {
await setTimeout(1).then(a => {
throw new Error("TestPassed");
});
throw "Should not reach here";
} catch (err) {
expect(err.message).toBe("TestPassed");
}
});
it.skip("order of setTimeouts", done => {
var nums = [];
var maybeDone = cb => {
return () => {
cb();
if (nums.length === 4) {
try {
expect(nums).toEqual([1, 2, 3, 4]);
done();
} catch (e) {
done(e);
}
}
};
};
setTimeout(maybeDone(() => nums.push(2)));
setTimeout(maybeDone(() => nums.push(3), 0));
setTimeout(maybeDone(() => nums.push(4), 1));
Promise.resolve().then(maybeDone(() => nums.push(1)));
});
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