Skipif no lzma ne

[WillAyd]

• progress TST: make _skip_if into pytest decorators #18190
• tests added / passed
• passes git diff upstream/master -u -- "*.py" | flake8 --diff
• whatsnew entry

[WillAyd]

Minor bug before where this wasn't passing engine as an argument to the skip_if function, so this test was always being skipped on systems lacking numexpr, even for non-numexpr engines

[WillAyd]

Same bug as above

[WillAyd]

The call to the super setup_class method inadvertently skipped this class of tests on systems that did not have numexpr even though that isn't required for these. Fixed with commit

[codecov]

Codecov Report

Merging #18820 into master will decrease coverage by 0.01%.
The diff coverage is 77.77%.

@@            Coverage Diff             @@
##           master   #18820      +/-   ##
==========================================
- Coverage   91.64%   91.63%   -0.02%     
==========================================
  Files         154      154              
  Lines       51408    51402       -6     
==========================================
- Hits        47113    47100      -13     
- Misses       4295     4302       +7

Flag	Coverage Δ
#multiple	89.49% <77.77%> (ø)	⬆️
#single	40.84% <77.77%> (-0.11%)	⬇️

Impacted Files	Coverage Δ
pandas/util/testing.py	83.31% <ø> (+0.16%)	⬆️
pandas/util/_test_decorators.py	92.06% <77.77%> (-2.49%)	⬇️
pandas/io/gbq.py	25% <0%> (-58.34%)	⬇️
pandas/core/frame.py	97.68% <0%> (-0.11%)	⬇️

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[jreback]

thanks @WillAyd keep em coming!