denoland-deno/tests/node_compat/test/parallel/test-stream-writable-decoded-encoding.js

// deno-fmt-ignore-file
// deno-lint-ignore-file

// Copyright Joyent and Node contributors. All rights reserved. MIT license.
// Taken from Node 20.11.1
// This file is automatically generated by `tests/node_compat/runner/setup.ts`. Do not modify this file manually.

// Copyright Joyent, Inc. and other Node contributors.
//
// Permission is hereby granted, free of charge, to any person obtaining a
// copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
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// persons to whom the Software is furnished to do so, subject to the
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'use strict';
require('../common');
const assert = require('assert');

const stream = require('stream');

class MyWritable extends stream.Writable {
  constructor(fn, options) {
    super(options);
    this.fn = fn;
  }

  _write(chunk, encoding, callback) {
    this.fn(Buffer.isBuffer(chunk), typeof chunk, encoding);
    callback();
  }
}

{
  const m = new MyWritable(function(isBuffer, type, enc) {
    assert(isBuffer);
    assert.strictEqual(type, 'object');
    assert.strictEqual(enc, 'buffer');
  }, { decodeStrings: true });
  m.write('some-text', 'utf8');
  m.end();
}

{
  const m = new MyWritable(function(isBuffer, type, enc) {
    assert(!isBuffer);
    assert.strictEqual(type, 'string');
    assert.strictEqual(enc, 'utf8');
  }, { decodeStrings: false });
  m.write('some-text', 'utf8');
  m.end();
}

{
  assert.throws(() => {
    const m = new MyWritable(null, {
      defaultEncoding: 'my invalid encoding',
    });
    m.end();
  }, {
    code: 'ERR_UNKNOWN_ENCODING',
  });
}

{
  const w = new MyWritable(function(isBuffer, type, enc) {
    assert(!isBuffer);
    assert.strictEqual(type, 'string');
    assert.strictEqual(enc, 'hex');
  }, {
    defaultEncoding: 'hex',
    decodeStrings: false
  });
  w.write('asd');
  w.end();
}

{
  const w = new MyWritable(function(isBuffer, type, enc) {
    assert(!isBuffer);
    assert.strictEqual(type, 'string');
    assert.strictEqual(enc, 'utf8');
  }, {
    defaultEncoding: null,
    decodeStrings: false
  });
  w.write('asd');
  w.end();
}

{
  const m = new MyWritable(function(isBuffer, type, enc) {
    assert.strictEqual(type, 'object');
    assert.strictEqual(enc, 'utf8');
  }, { defaultEncoding: 'hex',
       objectMode: true });
  m.write({ foo: 'bar' }, 'utf8');
  m.end();
}