test(plugin-lighthouse): refine tests

[BioPhoton]

Addressing: #593 (comment)

[nx-cloud]

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✅ Successfully ran 7 targets

• nx code-pushup -- compare --before=/home/runner/work/cli/cli/.code-pushup/prev-report.json --after=/home/runner/work/cli/cli/.code-pushup/curr-report.json --persist.outputDir=.code-pushup --persist.filename=report --persist.format=json --persist.format=md
• nx code-pushup -- --persist.outputDir=.code-pushup --persist.filename=report --persist.format=json --persist.format=md
• nx affected:e2e --parallel=3
• nx affected -t unit-test --parallel=3 --coverage.enabled
• nx affected -t integration-test --parallel=3 --coverage.enabled
• nx affected:lint --parallel=3
• nx affected:build --parallel=3

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[github-actions]

Code PushUp

🤨 Code PushUp report has both improvements and regressions – compared target commit be538e1 with source commit ac5a0e2.

🏷️ Categories

🏷️ Category	⭐ Current score	⭐ Previous score	🔄 Score change
Performance	🟡 71	🟡 83
Updates	🟡 68	🟡 68
Code coverage	🟡 67	🟡 66
Accessibility	🟢 100	🟢 100	–
Best Practices	🟢 100	🟢 100	–
SEO	🟡 86	🟡 86	–
PWA	🔴 38	🔴 38	–
Bug prevention	🟢 100	🟢 100	–
Code style	🟢 99	🟢 99	–
Security	🟡 80	🟡 80	–
Custom checks	🟡 67	🟡 67	–

🗃️ Groups

👍 2 groups improved, 👎 1 group regressed

🔌 Plugin	🗃️ Group	⭐ Current score	⭐ Previous score	🔄 Score change
Lighthouse	Performance	🟡 71	🟡 83
JS Packages	NPM outdated dependencies	🟡 68	🟡 68
Code coverage	Code coverage metrics	🟡 67	🟡 66

18 other groups are unchanged.

🛡️ Audits

👍 4 audits improved, 👎 7 audits regressed, 9 audits changed without impacting score

🔌 Plugin	🛡️ Audit	📏 Current value	📏 Previous value	🔄 Value change
Lighthouse	Largest Contentful Paint	🟨 3.6 s	🟨 2.7 s
Lighthouse	Max Potential First Input Delay	🟥 630 ms	🟥 350 ms
Lighthouse	Total Blocking Time	🟥 710 ms	🟨 510 ms
Lighthouse	First Contentful Paint	🟨 2.0 s	🟩 1.3 s
Lighthouse	First Meaningful Paint	🟩 2.0 s	🟩 1.3 s
Lighthouse	Time to Interactive	🟩 3.8 s	🟩 3.2 s
Lighthouse	Speed Index	🟩 2.7 s	🟩 1.6 s
JS Packages	Outdated NPM dev dependencies.	🟥 41 outdated package versions (24 major, 12 minor, 5 patch)	🟥 39 outdated package versions (24 major, 12 minor, 3 patch)
Code coverage	Function coverage	🟨 59 %	🟨 59 %
Code coverage	Branch coverage	🟨 82 %	🟨 82 %
Code coverage	Line coverage	🟨 65 %	🟨 64 %
Lighthouse	Avoids enormous network payloads	🟩 Total size was 467 KiB	🟩 Total size was 449 KiB
Lighthouse	Minimizes main-thread work	🟥 4.2 s	🟥 3.2 s
Lighthouse	Metrics	🟩 3762	🟩 3166
Lighthouse	JavaScript execution time	🟩 1.2 s	🟩 0.9 s
Lighthouse	Properly size images	🟥 Potential savings of 327 KiB	🟥 Potential savings of 327 KiB
Lighthouse	Initial server response time was short	🟩 Root document took 10 ms	🟩 Root document took 0 ms
Lighthouse	Server Backend Latencies	🟩 10 ms	🟩 10 ms
Lighthouse	Network Round Trip Times	🟩 10 ms	🟩 0 ms
Lighthouse	Uses efficient cache policy on static assets	🟨 14 resources found	🟨 14 resources found

503 other audits are unchanged.

[Tlacenka]

Looking great!