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var common = require('../common');
var assert = require('assert');
var stream = require('stream');
var util = require('util');
function MyWritable(fn, options) {
stream.Writable.call(this, options);
this.fn = fn;
};
util.inherits(MyWritable, stream.Writable);
MyWritable.prototype._write = function (chunk, encoding, callback) {
this.fn(Buffer.isBuffer(chunk), typeof chunk, encoding);
callback();
};
(function defaultCondingIsUtf8() {
var m = new MyWritable(function(isBuffer, type, enc) {
assert.equal(enc, 'utf8');
}, { decodeStrings: false });
m.write('foo');
m.end();
}());
(function changeDefaultEncodingToAscii() {
var m = new MyWritable(function(isBuffer, type, enc) {
assert.equal(enc, 'ascii');
}, { decodeStrings: false });
m.setDefaultEncoding('ascii');
m.write('bar');
m.end();
}());
assert.throws(function changeDefaultEncodingToInvalidValue() {
var m = new MyWritable(function(isBuffer, type, enc) {
}, { decodeStrings: false });
m.setDefaultEncoding({});
m.write('bar');
m.end();
}, TypeError);
(function checkVairableCaseEncoding() {
var m = new MyWritable(function(isBuffer, type, enc) {
assert.equal(enc, 'ascii');
}, { decodeStrings: false });
m.setDefaultEncoding('AsCii');
m.write('bar');
m.end();
}());
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