public void ShouldLogInfo()
        {
            var log = JsonStrings.CommandLogOut();

            var format = Substitute.For<IProtocolWriterFormat>();
            format.LogInfo("hello world!").Returns(log);

            var writer = Substitute.For<IWriteNext>();
            var reader = Substitute.For<IStormReader>();

            var subjectUnderTest = new StandardSpoutWriter(writer, format, reader);
            subjectUnderTest.LogInfo("hello world!");

            writer.Received().Write(log);
        }