[WIP] tests: skip test_pytest_html if not installed

[blueyed]

This is for convenience, and it being tested on CI should be covered via
coverage etc.

[blueyed]

I'd like to test here if not testing it would be reported, so please do not merge it yet.

[codecov-io]

Codecov Report

Merging #58 into master will decrease coverage by 8.29%.
The diff coverage is 100%.

@@            Coverage Diff            @@
##           master      #58     +/-   ##
=========================================
- Coverage   70.86%   62.56%   -8.3%     
=========================================
  Files           5        5             
  Lines         357      358      +1     
  Branches       35       35             
=========================================
- Hits          253      224     -29     
- Misses         93      122     +29     
- Partials       11       12      +1

Flag	Coverage Δ
#linux	62.56% <100%> (-8.3%)	⬇️
#py36	62.56% <100%> (-8.3%)	⬇️
#py37	62.56% <100%> (-8.3%)	⬇️

Impacted Files	Coverage Δ
tests/test_general.py	84% <100%> (-16%)	⬇️
pytest_parallel/__init__.py	52.89% <0%> (-6.95%)	⬇️

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[blueyed]

offtopic: @codecov-io should not post comments.. we have .ci/codecov.yml to turn them off..

[blueyed]

The comment reflects it:

• Coverage 70.86% 62.56% -8.3%

But there's no status.

@kevlened
Do you have a global codecov config somewhere already by chance?

[kevlened]

There's no global codecov config. Incidentally, I made you a contributor to the project.