test: test ignore nuances

[Suor]

• nested files are ignored
• external dirs are not affected

Testing this to prevent unintended changes to this behavior. Related to #2974.

[Suor]

We should use pathlib2 in Python 3.5 to make it work with fspath() and accept other Path-like objects. See error here. This is a recurring issue when developing things.

[codecov]

Codecov Report

Merging #3003 into master will decrease coverage by 0.21%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##           master    #3003      +/-   ##
==========================================
- Coverage   91.73%   91.52%   -0.22%     
==========================================
  Files         138      138              
  Lines        8704     8704              
==========================================
- Hits         7985     7966      -19     
- Misses        719      738      +19

Impacted Files	Coverage Δ
dvc/system.py	80% <0%> (-8.47%)	⬇️
dvc/remote/ssh/connection.py	81.28% <0%> (-2.96%)	⬇️
dvc/analytics.py	95.89% <0%> (-1.37%)	⬇️
dvc/scm/git/__init__.py	88.15% <0%> (-0.44%)	⬇️

---

Continue to review full report at Codecov.

Legend - Click here to learn more
Δ = absolute <relative> (impact), ø = not affected, ? = missing data
Powered by Codecov. Last update dd68e9a...5f3e416. Read the comment docs.

[Suor]

Looks like coverage report is broken. How adding a couple of tests can reduce coverage?

[efiop]

@Suor Yeah, not sure why it suddenly popped up here.