Add --output-on-failure to ctest

[kgerheiser]

Related to #155 to show error message when tests fail.

[jbathegit]

Interesting that the Python checks are now working. As noted in #135, @edwardhartnett and I had problems getting these to work even before I tried to submit my PR #155. I'm really puzzled here.

[jbathegit]

I guess I could go ahead and merge this PR back into develop, then re-baseline my jba_noDA branch and re-run the test and see what happens(?)

[aerorahul]

@jbathegit
If the python tests fail at any point, please open an issue immediately.
We added those tests to ensure they stay working, and not to be ignored in case they fail.

[jbathegit]

@jbathegit
If the python tests fail at any point, please open an issue immediately.
We added those tests to ensure they stay working, and not to be ignored in case they fail.

@edwardhartnett did open an issue for this back in April when he first noticed this (see #135). But it's still pending/unresolved.

[edwardhartnett]

I was just looking at all my issues and thinking that maybe zenhub will help... ;-)

Yes, python tests broke when I added code coverage. Not sure why. But that would have little to do with this issue, which is a cmake option...