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import { copyFileSync, writeFileSync, readFileSync, statSync } from "node:fs";
import { bench, run } from "mitata";
function runner(ready) {
for (let size of [1, 10, 100, 1000, 10000, 100000, 1000000, 10000000]) {
const rand = new Int32Array(size);
for (let i = 0; i < size; i++) {
rand[i] = (Math.random() * 1024 * 1024) | 0;
}
const dest = `/tmp/fs-test-copy-file-${((Math.random() * 10000000 + 100) | 0).toString(32)}`;
const src = `/tmp/fs-test-copy-file-${((Math.random() * 10000000 + 100) | 0).toString(32)}`;
writeFileSync(src, Buffer.from(rand.buffer), { encoding: "buffer" });
const { size: fileSize } = statSync(src);
if (fileSize !== rand.byteLength) {
throw new Error("size mismatch");
}
ready(src, dest, new Uint8Array(rand.buffer));
}
}
runner((src, dest, rand) =>
bench(`copyFileSync(${rand.buffer.byteLength} bytes)`, () => {
copyFileSync(src, dest);
// const output = readFileSync(dest).buffer;
// for (let i = 0; i < output.length; i++) {
// if (output[i] !== rand[i]) {
// throw new Error(
// "Files are not equal" + " " + output[i] + " " + rand[i] + " " + i
// );
// }
// }
}),
);
await run();
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