[Feature]: Include non-printable control characters such as \x01 in the console "Expected:" and "Received:" outputs.

[fixparser]

🚀 Feature Proposal

Include all control characters in the console, properly escaped so the <SOH> character is printed as \x01. It's currently stripped from the printed string.

Motivation

A lot of our tests uses these special characters and it creates extra work/steps due to the removal of these characters.

Example

This:

Expected: "8=FIXT.1.19=6835=A34=149=ISLD52=00000000-00:00:00.00056=TW98=0108=301137=910=0"
Received: "8=FIXT.1.135=A34=149=ISLD52=<TIME>56=TW141=N98=0108=30"

Should print as this:

Expected: "8=FIXT.1.1\x019=68\x0135=A\x0134=1\x0149=ISLD\x0152=00000000-00:00:00.000\x0156=TW\x0198=0\x01108=30\x011137=9\x0110=0\x01"
Received: "8=FIXT.1.1\x0135=A\x0134=1\x0149=ISLD\x0152=<TIME>\x0156=TW\x01141=N\x0198=0\x01108=30"

Pitch

Hopefully a simple change to include these characters, would be super helpful for our use case. Cheers