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Add mutation testing with Infection #553

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Add mutation testing with Infection #553

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16 changes: 16 additions & 0 deletions .github/workflows/continuous-integration.yml
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Expand Up @@ -203,6 +203,22 @@ jobs:
- name: Run phpstan
run: vendor/bin/phpstan

mutation-testing:
runs-on: ubuntu-latest
steps:
- name: Setup PHP
uses: shivammathur/setup-php@v2
with:
php-version: 8.4
extensions: intl, sodium, zip
tools: infection
env:
GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
- uses: actions/checkout@v6
- uses: ramsey/composer-install@v3
- name: Run infection
run: sudo infection --min-msi=68 --min-covered-msi=68 --threads=4 --show-mutations=max --no-progress
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@theofidry theofidry Mar 18, 2026

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  • is sudo necessary here?!
  • any reason to use --threads=4 instead of --threads=max?

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@asgrim asgrim Mar 18, 2026 •
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  • is sudo necessary here?!

yep, the tests require it (because I can't non-interactively sudo)

  • any reason to use --threads=4 instead of --threads=max?

nope :) will update


build-assets:
needs:
- unit-tests
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11 changes: 11 additions & 0 deletions infection.json5
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@@ -0,0 +1,11 @@
{
"$schema": "https://raw.githubusercontent.com/infection/infection/0.32.6/resources/schema.json",
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@theofidry theofidry Mar 18, 2026

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so what's the workflow to run it locally and not the CI when you're developing?

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@asgrim asgrim Mar 18, 2026

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use the phar, as per the docs; I suppose that should be documented 😁

"source": {
"directories": [
"src"
]
},
"mutators": {
"@default": true
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@theofidry theofidry Mar 18, 2026

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as an app, maybe it's already disabled by default, there is the public -> protected/private mutator that can be disabled

}
}
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