public void when_executing_without_context_it_should_fail()
        {
            var step = new GetMessageKeyStep();
            // ReSharper disable once AssignNullToNotNullAttribute - it's a test against null.
            Func <Task> sut = () => step.Execute(context: null);

            sut.Should().Throw <ArgumentNullException>().Where(exception => exception.ParamName.Equals("context"));
        }
        public void when_executed_it_should_store_message_key_in_context()
        {
            const byte expected = 0x23;
            var        context  = new MessagePublishingContext {
                Api = CreateEgressApi(), Message = new Message1 {
                    Byte = expected
                }
            };
            var sut = new GetMessageKeyStep();

            sut.Execute(context);

            context.Key.Should().Be(expected, "key should be set after step executed");
        }