skip tests that require pandoc

[ivanov]

I merged #3746 without running the test suite when I removed pandoc from my system, so it was my fault.

[ivanov]

@jdfreder about these tests in general: they're all the same with just a different import line - is that going to stay the same? If so, I can add to this PR to unify all those tests so future such changes are made in one place, instead of 7 files

[ivanov]

@wolever - see, you aren't the only one ;)

[Carreau]

Paul, you probably have a bad config to your editor, it seem to be
configured to add the following to every file you edit :

from IPython.testing.decorators import onlyif_cmds_exist
<...>
@onlyif_cmds_exist('pandoc')
<...>
<new line at EOF>

This does not adds no noise to many commits that are not done by people others than Min.

Don't be angry :-)

[Carreau]

LGTM

[Carreau]

Test actually passes. Merging.

[jdfreder]

@ivanov yeah, I could move them into the test_exporter.py. In the flavors/template (or what ever you want to call them) PR, the HTML and LaTeX tests also test the sub-templates (flavors/ whatever)... 🐫

[ivanov]

This does not adds no noise to many commits that are not done by people others than Min.

SOO ANGRY.