Partially improve CollectionAssert message

[Youssef1313]

It still doesn't give the complete info as requested in #334

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I would prefer to have actual and expected on new lines and not surrounded by quotes because for most complex data it could render weirdly.

@nohwnd I don't recall if your idea of expected/actual as exception data is already supported in TE or VSTest. If that's the case, it could be better than doing it explicitly (as done here).

@Youssef1313 Could we add a few tests?

[Evangelink]

I would prefer to have actual and expected on new lines and not surrounded by quotes because for most complex data it could render weirdly.

@nohwnd I don't recall if your idea of expected/actual as exception data is already supported in TE or VSTest. If that's the case, it could be better than doing it explicitly (as done here).

@Youssef1313 Could we add a few tests?

[Evangelink]

One last readability nit and LGTM, thanks @Youssef1313

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Awesome