bug: add failing test for hashSalt in prod mode (realContentHash)

[wejendorp]

This PR contains a:

• [ ] bugfix
• [ ] new feature
• [ ] code refactor
• [x] test update
• [ ] typo fix
• [ ] metadata update

Motivation / Use-Case

We noticed a bug with our bundles after adding salt values to the build.

Setting output.hashSalt together with optimization.realContentHash (e.g. prod mode) results in wrong urls for asset-modules, resulting in broken bundles.

The added test seems to be minimum to reproduce. For context (sanity check), the naming issue does not happen if the asset module is referenced from a js module instead.

Breaking Changes

None

Additional Info

This PR is just a bug report in the form of a failing test. I hope it can be useful to someone.

[codecov[bot]]

Codecov Report

Merging #778 (b506919) into master (794b602) will not change coverage. The diff coverage is n/a.

@@           Coverage Diff           @@
##           master     #778   +/-   ##
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  Coverage   92.04%   92.04%           
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  Files           6        6           
  Lines         704      704           
  Branches      170      170           
=======================================
  Hits          648      648           
  Misses         53       53           
  Partials        3        3           

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[alexander-akait]

@wejendorp what is mini-css-extract-version?

[alexander-akait]

Yep, bug, we will try to fix it in near future

[wejendorp]

Yep, bug, we will try to fix it in near future

Thank you for verifying @alexander-akait, let me know if I can help or anything.