libvcs 0.33.0 (test performance improved)

[tony]

Problem

Git, Subversion, and Mercurial repositories are unnecessarily reinitialized for each test via libvcs' pytest plugin.

• We're not utilizing session-based scoping.
  • A single initial repo could be created, then copied to tmp_path using shutil.copytree (source).

Improvement

Note

If run again, these may not work due to changes in fixture naming and behavior between versions, as well as modifications to how they are used in the pull request.

❯ hyperfine \
  --warmup 3 \
  --runs 10 \
  --prepare 'pip uninstall -y libvcs && pip install "libvcs==0.30.1"' \
  --command-name 'libvcs 0.30.1' \
  'py.test' \
  --prepare 'pip uninstall -y libvcs && pip install "libvcs==0.31.0"' \
  --command-name 'libvcs 0.31.0' \
  'py.test' \
  --prepare 'pip uninstall -y libvcs && pip install "libvcs==0.32.1"' \
  --command-name 'libvcs 0.32.1' \
  'py.test'
Benchmark 1: libvcs 0.30.1
  Time (mean ± σ):      4.784 s ±  0.116 s    [User: 4.641 s, System: 0.846 s]
  Range (min … max):    4.599 s …  4.971 s    10 runs

Benchmark 2: libvcs 0.31.0
  Time (mean ± σ):      3.436 s ±  0.115 s    [User: 2.821 s, System: 0.470 s]
  Range (min … max):    3.347 s …  3.678 s    10 runs

Benchmark 3: libvcs 0.32.1
  Time (mean ± σ):      3.173 s ±  0.054 s    [User: 2.726 s, System: 0.388 s]
  Range (min … max):    3.104 s …  3.295 s    10 runs

Summary
  libvcs 0.32.1 ran
    1.08 ± 0.04 times faster than libvcs 0.31.0
    1.51 ± 0.04 times faster than libvcs 0.30.1

Changes

libvcs 0.30.1 -> 0.33.0

See also:

• https://github.com/vcs-python/libvcs/blob/v0.33.0/CHANGES#libvcs-0330-2024-10-13
• https://libvcs.git-pull.com/history.html#libvcs-0-33-0-2024-10-13

Appendix

• pytest plugin: Improve performance via caching libvcs#472

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 84.42%. Comparing base (2bcc550) to head (f2bead6).
Report is 5 commits behind head on master.

Additional details and impacted files

@@            Coverage Diff             @@
##           master     #453      +/-   ##
==========================================
- Coverage   84.45%   84.42%   -0.04%     
==========================================
  Files          16       16              
  Lines         933      931       -2     
  Branches      137      137              
==========================================
- Hits          788      786       -2     
  Misses         92       92              
  Partials       53       53              

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