Add glue option to combine()

[bragostin]

This is the pull request solving issue #533

[codecov]

Codecov Report

Merging #535 (c959907) into master (1b52f10) will increase coverage by 0.22%.
The diff coverage is 100.00%.

@@            Coverage Diff             @@
##           master     #535      +/-   ##
==========================================
+ Coverage   93.94%   94.17%   +0.22%     
==========================================
  Files          30       30              
  Lines        6115     6210      +95     
  Branches      640      655      +15     
==========================================
+ Hits         5745     5848     +103     
+ Misses        235      224      -11     
- Partials      135      138       +3     

Impacted Files	Coverage Δ
cadquery/cq.py	89.56% <100.00%> (+0.64%)	⬆️
tests/test_cadquery.py	99.04% <100.00%> (+<0.01%)	⬆️
tests/test_workplanes.py	99.30% <0.00%> (-0.70%)	⬇️
cadquery/occ_impl/shapes.py	91.92% <0.00%> (+0.59%)	⬆️

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[bragostin]

Codecov complains that "Added line #L2874 was not covered by tests" in cadquery/cq.py#L2874
even though I added in line 2168 of tests/test_cadquery.py

        objects1.combine(glue=True, tol=None)
        self.assertEqual(11, objects1.faces().size())

to cover the new glue=True option in combine().
Any idea what is missing?

[jmwright]

@bragostin Unless it's something serious, I take what codecov says with a grain of salt (not too seriously). It often complains about things that are either non-issues or not anything major.

[adam-urbanczyk]

Codecov does not make that kind of mistakes AFAIK. Probably you have only one item (cq. Compound) in objects. Just put a breakpoint in this test and verify yourself.

[bragostin]

You are right @adam-urbanczyk , the problem was that I had one Compound only in objects, now Codecov passes.
What I don't understand though, is that initially I simply copied the original test, which has also one Compound only when I print objects1.vals() before combine is used.

[adam-urbanczyk]

You touched this line and that's why it was taken into account in the delta coverage calculation.

[adam-urbanczyk]

BTW: is this ready?

[bragostin]

@adam-urbanczyk yes it is

[jmwright]

Thanks @bragostin !

[adam-urbanczyk]

Merging, thanks for the contribution @bragostin !