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// Copyright 2018-2023 the Deno authors. All rights reserved. MIT license.
import {
assertEquals,
fail,
} from "../../../../test_util/std/testing/asserts.ts";
import { fsync, fsyncSync } from "node:fs";
Deno.test({
name: "ASYNC: flush any pending data of the given file stream to disk",
async fn() {
const file: string = await Deno.makeTempFile();
const { rid } = await Deno.open(file, {
read: true,
write: true,
create: true,
});
const size = 64;
await Deno.ftruncate(rid, size);
await new Promise<void>((resolve, reject) => {
fsync(rid, (err: Error | null) => {
if (err !== null) reject();
else resolve();
});
})
.then(
async () => {
assertEquals((await Deno.stat(file)).size, size);
},
() => {
fail("No error expected");
},
)
.finally(async () => {
await Deno.remove(file);
Deno.close(rid);
});
},
});
Deno.test({
name: "SYNC: flush any pending data the given file stream to disk",
fn() {
const file: string = Deno.makeTempFileSync();
const { rid } = Deno.openSync(file, {
read: true,
write: true,
create: true,
});
const size = 64;
Deno.ftruncateSync(rid, size);
try {
fsyncSync(rid);
assertEquals(Deno.statSync(file).size, size);
} finally {
Deno.removeSync(file);
Deno.close(rid);
}
},
});
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