Add bench

1 files changed, 31 insertions, 0 deletions

diff --git a/bench/snippets/cp.mjs b/bench/snippets/cp.mjs
new file mode 100644
index 000000000..7de02b129
--- /dev/null
+++ b/bench/snippets/cp.mjs
@@ -0,0 +1,31 @@
+import { mkdirSync, writeFileSync } from "fs";
+import { bench, run } from "./runner.mjs";
+import { cp } from "fs/promises";
+import { join } from "path";
+import { tmpdir } from "os";
+
+const hugeDirectory = (() => {
+  const root = join(tmpdir(), "huge");
+  const base = join(root, "directory", "for", "benchmarks", "1", "2", "3", "4", "5", "6", "7", "8", "9", "10");
+  mkdirSync(base, {
+    recursive: true,
+  });
+  for (let i = 0; i < 1000; i++) {
+    writeFileSync(join(base, "file-" + i + ".txt"), "Hello, world! " + i);
+  }
+  return root;
+})();
+const hugeFilePath = join(tmpdir(), "huge-file-0.txt");
+const hugeText = "Hello, world!".repeat(1000000);
+writeFileSync(hugeFilePath, hugeText);
+
+var hugeCopyI = 0;
+bench("cp -r (1000 files)", async b => {
+  await cp(hugeDirectory, join(tmpdir(), "huge-copy" + hugeCopyI++), { recursive: true });
+});
+
+bench("cp 1 " + ((hugeText.length / 1024) | 0) + " KB file", async b => {
+  await cp(hugeFilePath, join(tmpdir(), "huge-file" + hugeCopyI++));
+});
+
+await run();