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Reviewing files that changed from the base of the PR and between d797ec8 and 1c24147.

• tests/Functional/CustomTestKernel.php (2 hunks)

tests/Functional/CustomTestKernel.php (2)

48-51: getShareDir() override correctly ties the share directory to this kernel’s cache dir

Returning $this->getCacheDir() keeps %kernel.share_dir% aligned with your custom cache directory and matches Symfony’s documented default of using the cache dir when no dedicated share dir is configured.(symfony.com)

If you later need tests that exercise a distinct APP_SHARE_DIR, double-check whether CustomTestKernel::getShareDir() should start delegating to the base implementation instead of hard‑wiring it to the cache dir.

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85-85: Conditional addition of kernel.share_dir parameter is consistent and non‑breaking

Merging the base parameter array with an optional ['kernel.share_dir' => realpath($dir) ?: $dir] only when getShareDir() is non‑null cleanly exposes %kernel.share_dir% alongside the other kernel.* paths without altering existing keys, which matches how Symfony documents this parameter.(symfony.com)

Given this method mirrors Symfony’s Kernel::getKernelParameters() with local tweaks, consider re‑syncing it whenever you bump Symfony to pick up any future core parameter changes.