chore (ci): report test result to datadog

[cbeauchesne]

What does this PR do?

• Adds junit report on mocha based tests an system-tests, then report them to datadog

Changes

• change .mocharc.yml to .mocharc.js
• Add multi-reporter and spec + junit export, with node version in filename (note, the config of mocha is not trivial, I failed to add all conf in .mocharc.js and I had to add an extra conf file 😢 )
• Report system-tests to Datadog fca1709
• Report all tests to Datadog

Extra : adds .tap/* in gitignore (not related to this PR, I can remove it if needed)

Good to know : #1367

Not in this PR

• tap: There is no version that support both nyc (dropped in v18 in favor of c8) and junit (introduced in v18). The used version is quite old, so it may be a good idea to update it. Though, using two different coverage tool is not an option, so this part must be addressed in a different PR. This current Pr will focus on mocha and system-tests. Side note, do we want this? mocha seems to be the target.
• test:eslint-rules -> only lint, will see later if needed

Motivation

Additional Notes

[github-actions]

Overall package size

Self size: 12.82 MB
Deduped: 115.43 MB
No deduping: 117.64 MB

Dependency sizes

| name | version | self size | total size | |------|---------|-----------|------------| | @datadog/libdatadog | 0.7.0 | 35.02 MB | 35.02 MB | | @datadog/native-appsec | 10.2.1 | 20.64 MB | 20.65 MB | | @datadog/native-iast-taint-tracking | 4.0.0 | 11.72 MB | 11.73 MB | | @datadog/pprof | 5.11.1 | 9.96 MB | 10.34 MB | | @opentelemetry/core | 1.30.1 | 908.66 kB | 7.16 MB | | protobufjs | 7.5.4 | 2.95 MB | 5.73 MB | | @datadog/wasm-js-rewriter | 4.0.1 | 2.85 MB | 3.58 MB | | @opentelemetry/resources | 1.9.1 | 306.54 kB | 1.74 MB | | @datadog/native-metrics | 3.1.1 | 1.02 MB | 1.43 MB | | @opentelemetry/api-logs | 0.205.0 | 201.51 kB | 1.42 MB | | @opentelemetry/api | 1.9.0 | 1.22 MB | 1.22 MB | | jsonpath-plus | 10.3.0 | 617.18 kB | 1.08 MB | | import-in-the-middle | 1.15.0 | 127.66 kB | 856.24 kB | | lru-cache | 10.4.3 | 804.3 kB | 804.3 kB | | @datadog/openfeature-node-server | 0.1.0-preview.10 | 95.11 kB | 401.46 kB | | opentracing | 0.14.7 | 194.81 kB | 194.81 kB | | source-map | 0.7.6 | 185.63 kB | 185.63 kB | | pprof-format | 2.2.1 | 163.06 kB | 163.06 kB | | @datadog/sketches-js | 2.1.1 | 109.9 kB | 109.9 kB | | lodash.sortby | 4.7.0 | 75.76 kB | 75.76 kB | | ignore | 7.0.5 | 63.38 kB | 63.38 kB | | istanbul-lib-coverage | 3.2.2 | 34.37 kB | 34.37 kB | | rfdc | 1.4.1 | 27.15 kB | 27.15 kB | | dc-polyfill | 0.1.10 | 26.73 kB | 26.73 kB | | @isaacs/ttlcache | 1.4.1 | 25.2 kB | 25.2 kB | | tlhunter-sorted-set | 0.1.0 | 24.94 kB | 24.94 kB | | shell-quote | 1.8.3 | 23.74 kB | 23.74 kB | | limiter | 1.1.5 | 23.17 kB | 23.17 kB | | retry | 0.13.1 | 18.85 kB | 18.85 kB | | semifies | 1.0.0 | 15.84 kB | 15.84 kB | | jest-docblock | 29.7.0 | 8.99 kB | 12.76 kB | | crypto-randomuuid | 1.0.0 | 11.18 kB | 11.18 kB | | ttl-set | 1.0.0 | 4.61 kB | 9.69 kB | | mutexify | 1.4.0 | 5.71 kB | 8.74 kB | | path-to-regexp | 0.1.12 | 6.6 kB | 6.6 kB | | module-details-from-path | 1.0.4 | 3.96 kB | 3.96 kB |

_{🤖 This report was automatically generated by heaviest-objects-in-the-universe}

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 84.12%. Comparing base (7f63420) to head (7e13a47).
⚠️ Report is 15 commits behind head on master.

Additional details and impacted files

@@           Coverage Diff           @@
##           master    #6649   +/-   ##
=======================================
  Coverage   84.11%   84.12%           
=======================================
  Files         503      505    +2     
  Lines       21006    21027   +21     
=======================================
+ Hits        17670    17689   +19     
- Misses       3336     3338    +2     

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[pr-commenter]

Benchmarks

Benchmark execution time: 2025-10-17 19:35:03

Comparing candidate commit 7e13a47 in PR branch cbeauchesne/junit with baseline commit 7f63420 in branch master.

Found 0 performance improvements and 0 performance regressions! Performance is the same for 1602 metrics, 68 unstable metrics.

[rochdev]

LGTM. It would be nice to be able to make it so that codecov+junit can be defined in only one place as a reusable action, but unless there is a way to pass secrets more easily I guess there wouldn't be much to gain.