Reliable method to generate ascii output for debugging

[nomennescio]

When writing code using different test frameworks, one of the difficult challenges is to be able to generate sufficient output to "debug" your solution at the correct moments. Especially in corner cases such as exceptions, or output that gets interpreted, it's very difficult to reliably debug.

Please add a supported feature in all relevant test frameworks to be able to insert output before execution errors or framework interpretation takes place.