mirror of https://github.com/nodejs/node.git
39 lines
890 B
JavaScript
39 lines
890 B
JavaScript
'use strict';
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require('../common');
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var assert = require('assert');
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var stream = require('stream');
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var util = require('util');
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function MyWritable(fn, options) {
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stream.Writable.call(this, options);
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this.fn = fn;
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}
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util.inherits(MyWritable, stream.Writable);
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MyWritable.prototype._write = function(chunk, encoding, callback) {
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this.fn(Buffer.isBuffer(chunk), typeof chunk, encoding);
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callback();
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};
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{
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const m = new MyWritable(function(isBuffer, type, enc) {
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assert(isBuffer);
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assert.strictEqual(type, 'object');
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assert.strictEqual(enc, 'buffer');
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}, { decodeStrings: true });
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m.write('some-text', 'utf8');
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m.end();
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}
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{
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const m = new MyWritable(function(isBuffer, type, enc) {
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assert(!isBuffer);
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assert.strictEqual(type, 'string');
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assert.strictEqual(enc, 'utf8');
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}, { decodeStrings: false });
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m.write('some-text', 'utf8');
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m.end();
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}
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