// 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
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to permit
// persons to whom the Software is furnished to do so, subject to the
// following conditions:
//
// The above copyright notice and this permission notice shall be included
// in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
// USE OR OTHER DEALINGS IN THE SOFTWARE.

'use strict';
require('../common');
const assert = require('assert');

const Transform = require('stream').Transform;

const parser = new Transform({ readableObjectMode: true });

assert(parser._readableState.objectMode);
assert(!parser._writableState.objectMode);
assert.strictEqual(parser.readableHighWaterMark, 16);
assert.strictEqual(parser.writableHighWaterMark, 16 * 1024);
assert.strictEqual(parser.readableHighWaterMark,
                   parser._readableState.highWaterMark);
assert.strictEqual(parser.writableHighWaterMark,
                   parser._writableState.highWaterMark);

parser._transform = function(chunk, enc, callback) {
  callback(null, { val: chunk[0] });
};

let parsed;

parser.on('data', function(obj) {
  parsed = obj;
});

parser.end(Buffer.from([42]));

process.on('exit', function() {
  assert.strictEqual(parsed.val, 42);
});


const serializer = new Transform({ writableObjectMode: true });

assert(!serializer._readableState.objectMode);
assert(serializer._writableState.objectMode);
assert.strictEqual(serializer.readableHighWaterMark, 16 * 1024);
assert.strictEqual(serializer.writableHighWaterMark, 16);
assert.strictEqual(parser.readableHighWaterMark,
                   parser._readableState.highWaterMark);
assert.strictEqual(parser.writableHighWaterMark,
                   parser._writableState.highWaterMark);

serializer._transform = function(obj, _, callback) {
  callback(null, Buffer.from([obj.val]));
};

let serialized;

serializer.on('data', function(chunk) {
  serialized = chunk;
});

serializer.write({ val: 42 });

process.on('exit', function() {
  assert.strictEqual(serialized[0], 42);
});