test/parallel/test-fs-readfile-empty.js

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'use strict';
require('../common');

// Trivial test of fs.readFile on an empty file.

const assert = require('assert');
const fs = require('fs');
const fixtures = require('../common/fixtures');

const fn = fixtures.path('empty.txt');

fs.readFile(fn, function(err, data) {
  assert.ok(data);
});

fs.readFile(fn, 'utf8', function(err, data) {
  assert.strictEqual(data, '');
});

fs.readFile(fn, { encoding: 'utf8' }, function(err, data) {
  assert.strictEqual(data, '');
});

assert.ok(fs.readFileSync(fn));
assert.strictEqual(fs.readFileSync(fn, 'utf8'), '');