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import { dns } from "bun";
import { describe, expect, it, test } from "bun:test";
import { withoutAggressiveGC } from "gc";
describe("dns.lookup", () => {
const backends = [process.platform === "darwin" ? "system" : undefined, "libc", "c-ares"].filter(Boolean);
for (let backend of backends) {
it(backend + " parallell x 10", async () => {
const promises = [];
for (let i = 0; i < 10; i++) {
promises.push(dns.lookup("localhost", { backend }));
}
const results = (await Promise.all(promises)).flat();
withoutAggressiveGC(() => {
for (let { family, address } of results) {
if (family === 4) {
expect(address).toBe("127.0.0.1");
} else if (family === 6) {
expect(address).toBe("::1");
} else {
throw new Error("Unknown family");
}
}
});
});
it(backend + " remote", async () => {
const [first, second] = await dns.lookup("google.com", { backend });
console.log(first, second);
});
it(backend + " local", async () => {
const [first, second] = await dns.lookup("localhost", { backend });
console.log(first, second);
});
it(backend + " failing domain throws an error without taking a very long time", async () => {
try {
await dns.lookup("yololololololo1234567.com", { backend });
throw 42;
} catch (e) {
expect(typeof e).not.toBe("number");
expect(e.code).toBe("DNS_ENOTFOUND");
}
});
}
});
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