FSharpCustomMessageFormatter

[sergey-tihon]

Just found in docs http://fsprojects.github.io/FsUnit/NUnit.html

@CaptnCodr I remember that you fixed similar issues here #155
May I ask you to take look if it still works / needed?

[CaptnCodr]

Yes, I take a look.

[CaptnCodr]

@sergey-tihon It still works and is needed. Especially the Result-Type.
In this repro I recognized that FsUnitTyped.shouldEqual and FsUnitTyped.shouldNotEqual prints the error message twice.
First from FsUnitTyped and second from the Nunit framework:

We should fix this. This comes from here: bf38605#diff-fc2f5b7136e6efc18391b4ff8daa5d05R11

[CaptnCodr]

This fix can be achieved through removing the sprintf "Expected: %A\nActual: %A" expected actual from FsUnitTyped, but then we have no pretty print anymore.

[CaptnCodr]

When I remove sprintf "Expected: %A\nActual: %A" expected actual from shouldEqual then I have to add type InitMsgUtils () = inherit FSharpCustomMessageFormatter() to the tests to have a pretty message e.g.:

Do we want to do that, @sergey-tihon? It's only affecting shouldEqual and shouldNotEqual with such types.