node/test/parallel/test-fs-readfile-unlink.js

// Copyright Joyent, Inc. and other Node contributors.
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'use strict';
const common = require('../common');
const assert = require('assert');
const fs = require('fs');
const path = require('path');

const fileName = path.resolve(common.tmpDir, 'test.bin');
const buf = Buffer.alloc(512 * 1024, 42);

common.refreshTmpDir();

fs.writeFileSync(fileName, buf);

fs.readFile(fileName, function(err, data) {
  assert.ifError(err);
  assert.strictEqual(data.length, buf.length);
  assert.strictEqual(buf[0], 42);

  // Unlink should not throw. This is part of the test. It used to throw on
  // Windows due to a bug.
  fs.unlinkSync(fileName);
});