Add tests for imports when optional packages are unavailable

[akihironitta]

What does this PR do?

Fixes #421.

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[codecov]

Codecov Report

Merging #428 (b358569) into master (5ab4fae) will decrease coverage by 47.17%.
The diff coverage is n/a.

@@             Coverage Diff             @@
##           master     #428       +/-   ##
===========================================
- Coverage   72.01%   24.83%   -47.18%     
===========================================
  Files         119      119               
  Lines        7367     7332       -35     
===========================================
- Hits         5305     1821     -3484     
- Misses       2062     5511     +3449     

Flag	Coverage Δ
cpu	24.83% <ø> (-47.18%)	⬇️
pytest	24.83% <ø> (-47.18%)	⬇️

Flags with carried forward coverage won't be shown. Click here to find out more.

Impacted Files	Coverage Δ
pl_bolts/models/rl/__init__.py	0.00% <0.00%> (-100.00%)	⬇️
pl_bolts/models/rl/common/agents.py	0.00% <0.00%> (-100.00%)	⬇️
pl_bolts/models/rl/dueling_dqn_model.py	0.00% <0.00%> (-100.00%)	⬇️
pl_bolts/models/rl/double_dqn_model.py	0.00% <0.00%> (-95.84%)	⬇️
...l_bolts/models/rl/vanilla_policy_gradient_model.py	0.00% <0.00%> (-93.45%)	⬇️
pl_bolts/models/rl/common/networks.py	0.00% <0.00%> (-91.60%)	⬇️
pl_bolts/models/rl/reinforce_model.py	0.00% <0.00%> (-89.40%)	⬇️
pl_bolts/models/rl/per_dqn_model.py	0.00% <0.00%> (-86.89%)	⬇️
pl_bolts/models/rl/ppo_model.py	0.00% <0.00%> (-86.82%)	⬇️
pl_bolts/models/rl/common/gym_wrappers.py	0.00% <0.00%> (-85.50%)	⬇️
... and 64 more

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[pep8speaks]

Hello @akihironitta! Thanks for updating this PR.

• In the file pl_bolts/metrics/__init__.py:

Line 7:2: W292 no newline at end of file

• In the file pl_bolts/transforms/self_supervised/__init__.py:

Line 1:114: W292 no newline at end of file

Comment last updated at 2021-06-24 02:35:00 UTC

[Borda]

@akihironitta what is missing to finish it, mind update the description with linking the partial PRs?

[akihironitta]

I completely forgot about this PR. I'll quickly make this PR ready for review!

mind update the description with linking the partial PRs?

Actually, all tests for optional imports are being added in this PR because I thought it's quite easy to review at once... I'll split this PR into several PRs if you'd like :]

[Borda]

Sorry, the actual change was unclear. Please see only the change in .github/workflows/ci_test-full.yml.

can you pls make it the only change of this PR?

[akihironitta]

Sorry, the actual change was unclear. Please see only the change in .github/workflows/ci_test-full.yml.

can you pls make it the only change of this PR?

@Borda Could you have another look?