@mysql/xdevapi/test/functional/default/protocol/fragments.js

MySQL Connector/Node.js - A Node.js driver for MySQL using the X Protocol and X DevAPI.

/*
 * Copyright (c) 2020, 2021, Oracle and/or its affiliates.
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License, version 2.0, as
 * published by the Free Software Foundation.
 *
 * This program is also distributed with certain software (including
 * but not limited to OpenSSL) that is licensed under separate terms,
 * as designated in a particular file or component or in included license
 * documentation.  The authors of MySQL hereby grant you an
 * additional permission to link the program and your derivative works
 * with the separately licensed software that they have included with
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 * Without limiting anything contained in the foregoing, this file,
 * which is part of MySQL Connector/Node.js, is also subject to the
 * Universal FOSS Exception, version 1.0, a copy of which can be found at
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 *
 * This program is distributed in the hope that it will be useful, but
 * WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
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 */

'use strict';

/* eslint-env node, mocha */

const config = require('../../../config');
const expect = require('chai').expect;
const fixtures = require('../../../fixtures');
const mysqlx = require('../../../..');

describe('handling X Protocol TCP fragments', () => {
    const baseConfig = { schema: config.schema || 'mysql-connector-nodejs_test' };

    let schema, session, collection;

    beforeEach('create default schema', () => {
        return fixtures.createSchema(baseConfig.schema);
    });

    beforeEach('create session using default schema', () => {
        const defaultConfig = Object.assign({}, config, baseConfig);

        return mysqlx.getSession(defaultConfig)
            .then(s => {
                session = s;
            });
    });

    beforeEach('load default schema', () => {
        schema = session.getDefaultSchema();
    });

    beforeEach('create collection', () => {
        return schema.createCollection('test')
            .then(c => {
                collection = c;
            });
    });

    beforeEach('add fixtures', () => {
        // Make sure the content size exceeds V8's maximum buffer length (currently, 4096 bytes)
        // by, at least, a factor of 2 (to make it simple, the size of the remaining content is ignored).
        return collection.add({ content: 'x'.repeat(4096 * 2) })
            .execute();
    });

    afterEach('drop default schema', () => {
        return session.dropSchema(schema.getName());
    });

    afterEach('close session', () => {
        return session.close();
    });

    context('BUG#27429429', () => {
        it('decodes messages split into more than two fragments', () => {
            const expected = 'x'.repeat(4096 * 2);

            return collection.find()
                .fields('content')
                .execute(doc => expect(doc.content).to.equal(expected));
        });
    });
});