cli/tests/unit_node/testdata/binary_stdio.js


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const buffer = new Uint8Array(10);
const nread = await Deno.stdin.read(buffer);

if (nread != 10) {
  throw new Error("Too little data read");
}

const nwritten = await Deno.stdout.write(buffer);
if (nwritten != 10) {
  throw new Error("Too little data written");
}