Describe the bug
As the comment in the code suggests, the "fully-rendered" text is really a derived output that depends on a lot of external factors. It isn't a direct output of the unit under test.

As an example, the unit test is currently getting thrashed around due to a message ID check due to the fact that there is no specific text that is always "correct" here.

It broke when updated to 32 bit (#87), attempted to fix in #94, which only broke the original case (v1 header).

To Reproduce
Run unit test using v1 (16-bit) message IDs.
Currently failing in the integration-candidate branch

Expected behavior
Tests should pass.

System observed on:
Ubuntu 20.04 and Travis-CI (current integration candidate).

Additional context
Recommendation is to only check the SPEC STRING (0x%x) which will be the same regardless of what the "invalid msgid" value actually is. That's all that really matters.

Reporter Info
Joseph Hickey, Vantage Systems, Inc.