MWPW-154480 Split global-navigation.test.js into multiple files

[chrischrischris]

Brings total time to run tests from 40s -> 19s on my machine.

There are no code changes in this PR, only moving of code from global-navigation.test.js into multiple test files.

Unfortunately it does not speed up the running of the unit tests on the PR runs.

Resolves: MWPW-154480

Test URLs:

• Before: https://main--milo--adobecom.hlx.page/?martech=off
• After: https://split-gnav-tests--milo--adobecom.hlx.page/?martech=off

[aem-code-sync]

Hello, I'm the AEM Code Sync Bot and I will run some actions to deploy your branch and validate page speed.
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Commits

• f1984d2 ✅ (latest)

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 96.28%. Comparing base (d932b35) to head (f1984d2).

Additional details and impacted files

@@            Coverage Diff             @@
##            stage    #2576      +/-   ##
==========================================
+ Coverage   95.84%   96.28%   +0.44%     
==========================================
  Files         176      176              
  Lines       46149    46149              
==========================================
+ Hits        44230    44435     +205     
+ Misses       1919     1714     -205     

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[aem-code-sync]

Page	Scores	Audits	Google
/?martech=off

[hparra]

There was an increase in coverage 🧐

[chrischrischris]

@hparra I have no idea how/why that would happen. Not going to complain though 😆

[mokimo]

Makes sense, as the tests can't run in parallel otherwise, thanks for tackling this! The global-navigation tests always lagged behind all the other completions locally

[milo-pr-merge]

Error merging 2576: MWPW-154480 Split global-navigation.test.js into multiple files SLACK.merge(...).catch is not a function