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73 lines
2.3 KiB
73 lines
2.3 KiB
// Copyright Joyent, Inc. and other Node contributors.
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//
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// Permission is hereby granted, free of charge, to any person obtaining a
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// copy of this software and associated documentation files (the
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// "Software"), to deal in the Software without restriction, including
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// without limitation the rights to use, copy, modify, merge, publish,
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// distribute, sublicense, and/or sell copies of the Software, and to permit
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// persons to whom the Software is furnished to do so, subject to the
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// following conditions:
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//
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// The above copyright notice and this permission notice shall be included
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// in all copies or substantial portions of the Software.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
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// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
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// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
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// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
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// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
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// USE OR OTHER DEALINGS IN THE SOFTWARE.
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'use strict';
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require('../common');
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const assert = require('assert');
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const Transform = require('stream').Transform;
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const parser = new Transform({ readableObjectMode: true });
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assert(parser._readableState.objectMode);
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assert(!parser._writableState.objectMode);
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assert.strictEqual(parser._readableState.highWaterMark, 16);
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assert.strictEqual(parser._writableState.highWaterMark, 16 * 1024);
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parser._transform = function(chunk, enc, callback) {
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callback(null, { val: chunk[0] });
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};
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let parsed;
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parser.on('data', function(obj) {
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parsed = obj;
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});
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parser.end(Buffer.from([42]));
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process.on('exit', function() {
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assert.strictEqual(parsed.val, 42);
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});
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const serializer = new Transform({ writableObjectMode: true });
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assert(!serializer._readableState.objectMode);
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assert(serializer._writableState.objectMode);
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assert.strictEqual(serializer._readableState.highWaterMark, 16 * 1024);
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assert.strictEqual(serializer._writableState.highWaterMark, 16);
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serializer._transform = function(obj, _, callback) {
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callback(null, Buffer.from([obj.val]));
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};
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let serialized;
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serializer.on('data', function(chunk) {
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serialized = chunk;
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});
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serializer.write({ val: 42 });
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process.on('exit', function() {
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assert.strictEqual(serialized[0], 42);
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});
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