        function sendMessage(callback) {
            pool.send(
                {
                    data: {},
                    message: new MockBuilder(
                        {
                            from: 'test@valid.sender',
                            to: 'test@valid.recipient'
                        },
                        message
                    )
                },
                function(err) {
                    expect(err).to.not.exist;
                    callback();
                }
            );
        }

        let total = 100;
        let returned = 0;
        let cb = function() {
            let sent = 0;

            if (++returned === total) {
                expect(pool._connections.length).to.be.above(1);
                pool._connections.forEach(function(conn) {
                    expect(conn.messages).to.be.above(1);
                    sent += conn.messages;
                });

                expect(sent).to.be.equal(total);

                pool.close();
                return done();
            }
        };
        for (let i = 0; i < total; i++) {
            sendMessage(cb);
        }
    });
The software constructs a string for a command to executed by a separate component
in another control sphere, but it does not properly delimit the
intended arguments, options, or switches within that command string.