buf.fill(0xFF);
written = buf.write('abcd', 0, 2, encoding);
console.log(buf);
assert.equal(written, 2);
assert.equal(buf[0], 0x61);
assert.equal(buf[1], 0x00);
assert.equal(buf[2], 0xFF);
assert.equal(buf[3], 0xFF);
});
// test unmatched surrogates not producing invalid utf8 output
// ef bf bd = utf-8 representation of unicode replacement character
// see https://codereview.chromium.org/121173009/
// TRIREME: Different UTF-8 replacement in Java.
buf = new Buffer('ab\ud800cd', 'utf8');
console.log(buf.inspect());
assert.equal(buf[0], 0x61);
assert.equal(buf[1], 0x62);
assert.equal(buf[2], 0x3f);
assert.equal(buf[3], 0x63);
assert.equal(buf[4], 0x64);
// test for buffer overrun
buf = new Buffer([0, 0, 0, 0, 0]); // length: 5
var sub = buf.slice(0, 4); // length: 4
written = sub.write('12345', 'binary');
assert.equal(written, 4);
assert.equal(buf[4], 0);
// test for _charsWritten
buf = new Buffer(9);