@mysql/xdevapi/test/unit/Protocol/OutboundHandlers/Connection.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
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 * as designated in a particular file or component or in included license
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 * additional permission to link the program and your derivative works
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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
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 * See the GNU General Public License, version 2.0, for more details.
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 */

'use strict';

/* eslint-env node, mocha */

const expect = require('chai').expect;
const td = require('testdouble');

// subject under test needs to be reloaded with replacement fakes
let connection = require('../../../../lib/Protocol/OutboundHandlers/Connection');

describe('Mysqlx.Connection outbound handler', () => {
    let capabilitiesGet, capabilitiesSet, close, logger, info;

    beforeEach('create fakes', () => {
        capabilitiesGet = td.replace('../../../../lib/Protocol/Wrappers/Messages/Connection/CapabilitiesGet');
        capabilitiesSet = td.replace('../../../../lib/Protocol/Wrappers/Messages/Connection/CapabilitiesSet');
        close = td.replace('../../../../lib/Protocol/Wrappers/Messages/Connection/Close');
        logger = td.replace('../../../../lib/logger');

        info = td.function();
        td.when(logger('protocol:outbound:Mysqlx.Connection')).thenReturn({ info });

        connection = require('../../../../lib/Protocol/OutboundHandlers/Connection');
    });

    afterEach('reset fakes', () => {
        td.reset();
    });

    it('serializes and logs Mysqlx.Connection.CapabilitiesGet messages', () => {
        const message = { serialize: td.function() };

        td.when(capabilitiesGet.create()).thenReturn(message);
        td.when(message.serialize()).thenReturn('foo');

        expect(connection.encodeCapabilitiesGet()).to.equal('foo');
        expect(td.explain(info).callCount).to.equal(1);
        expect(td.explain(info).calls[0].args[0]).to.equal('CapabilitiesGet');
        expect(td.explain(info).calls[0].args[1]).to.deep.equal(message);
    });

    it('serializes and logs Mysqlx.Connection.CapabilitiesSet messages', () => {
        const message = { serialize: td.function() };

        td.when(capabilitiesSet.create('foo')).thenReturn(message);
        td.when(message.serialize()).thenReturn('bar');

        expect(connection.encodeCapabilitiesSet('foo')).to.equal('bar');
        expect(td.explain(info).callCount).to.equal(1);
        expect(td.explain(info).calls[0].args[0]).to.equal('CapabilitiesSet');
        expect(td.explain(info).calls[0].args[1]).to.deep.equal(message);
    });

    it('serializes and logs Mysqlx.Connection.Close messages', () => {
        const message = { serialize: td.function() };

        td.when(close.create()).thenReturn(message);
        td.when(message.serialize()).thenReturn('foo');

        expect(connection.encodeClose()).to.equal('foo');
        expect(td.explain(info).callCount).to.equal(1);
        expect(td.explain(info).calls[0].args[0]).to.equal('Close');
        expect(td.explain(info).calls[0].args[1]).to.deep.equal(message);
    });
});