Upgrade project structure

.gitattributes

@@ -1,10 +1,8 @@
-/tests               export-ignore
-/.gitattributes      export-ignore
-/.gitignore          export-ignore
-/.scrutinizer.yml    export-ignore
-/.travis.yml         export-ignore
-/infection.json.dist export-ignore
-/phpcs.xml.dist      export-ignore
-/phpstan.neon.dist   export-ignore
-/phpunit.xml.dist    export-ignore
-/README.md           export-ignore
+/tests          export-ignore
+/.github        export-ignore
+/.gitattributes export-ignore
+/.gitignore     export-ignore
+/*.dist         export-ignore
+/README.md      export-ignore
+/Makefile       export-ignore
+/composer.lock  export-ignore

.github/workflows/backwards-compatibility.yml

@@ -0,0 +1,21 @@
+name: "Backwards compatibility check"
+
+on:
+  pull_request:
+
+jobs:
+  bc-check:
+    name: "Backwards compatibility check"
+
+    runs-on: "ubuntu-latest"
+
+    steps:
+      - name: "Checkout"
+        uses: "actions/checkout@v2"
+        with:
+          fetch-depth: 0
+
+      - name: "BC Check"
+        uses: docker://nyholm/roave-bc-check-ga
+        with:
+          args: --from=${{ github.event.pull_request.base.sha }}

.github/workflows/coding-standards.yml

@@ -0,0 +1,58 @@
+name: "Check Coding Standards"
+
+on:
+  pull_request:
+  push:
+
+jobs:
+  coding-standards:
+    name: "Check Coding Standards"
+
+    runs-on: ${{ matrix.operating-system }}
+
+    strategy:
+      matrix:
+        dependencies:
+          - "locked"
+        php-version:
+          - "7.4"
+        operating-system:
+          - "ubuntu-latest"
+
+    steps:
+      - name: "Checkout"
+        uses: "actions/checkout@v2"
+
+      - name: "Install PHP"
+        uses: "shivammathur/setup-php@v2"
+        with:
+          coverage: "none"
+          php-version: "${{ matrix.php-version }}"
+          ini-values: memory_limit=-1
+          tools: composer:v2, cs2pr
+
+      - name: Get composer cache directory
+        id: composer-cache
+        run: echo "::set-output name=dir::$(composer config cache-files-dir)"
+
+      - name: "Cache dependencies"
+        uses: "actions/cache@v2"
+        with:
+          path: ${{ steps.composer-cache.outputs.dir }}
+          key: "php-${{ matrix.php-version }}-composer-${{ matrix.dependencies }}-${{ hashFiles('**/composer.lock') }}"
+          restore-keys: "php-${{ matrix.php-version }}-composer-${{ matrix.dependencies }}-"
+
+      - name: "Install lowest dependencies"
+        if: ${{ matrix.dependencies == 'lowest' }}
+        run: "composer update --prefer-lowest --no-interaction --no-progress"
+
+      - name: "Install highest dependencies"
+        if: ${{ matrix.dependencies == 'highest' }}
+        run: "composer update --no-interaction --no-progress"
+
+      - name: "Install locked dependencies"
+        if: ${{ matrix.dependencies == 'locked' }}
+        run: "composer install --no-interaction --no-progress"
+
+      - name: "Coding Standard"
+        run: "make phpcs PHPCS_FLAGS='-q --report=checkstyle | cs2pr'"

.github/workflows/composer-json-lint.yml

@@ -0,0 +1,64 @@
+name: "Lint composer.json"
+
+on:
+  pull_request:
+  push:
+
+jobs:
+  coding-standards:
+    name: "Lint composer.json"
+
+    runs-on: ${{ matrix.operating-system }}
+
+    strategy:
+      matrix:
+        dependencies:
+          - "highest"
+        php-version:
+          - "7.4"
+        operating-system:
+          - "ubuntu-latest"
+
+    steps:
+      - name: "Checkout"
+        uses: "actions/checkout@v2"
+
+      - name: "Install PHP"
+        uses: "shivammathur/setup-php@v2"
+        with:
+          coverage: "none"
+          php-version: "${{ matrix.php-version }}"
+          ini-values: memory_limit=-1
+          tools: composer:v2, composer-normalize, composer-unused
+
+      - name: Get composer cache directory
+        id: composer-cache
+        run: echo "::set-output name=dir::$(composer config cache-files-dir)"
+
+      - name: "Cache dependencies"
+        uses: "actions/cache@v2"
+        with:
+          path: ${{ steps.composer-cache.outputs.dir }}
+          key: "php-${{ matrix.php-version }}-composer-${{ matrix.dependencies }}-${{ hashFiles('**/composer.lock') }}"
+          restore-keys: "php-${{ matrix.php-version }}-composer-${{ matrix.dependencies }}-"
+
+      - name: "Install lowest dependencies"
+        if: ${{ matrix.dependencies == 'lowest' }}
+        run: "composer update --prefer-lowest --no-interaction --no-progress"
+
+      - name: "Install highest dependencies"
+        if: ${{ matrix.dependencies == 'highest' }}
+        run: "composer update --no-interaction --no-progress"
+
+      - name: "Install locked dependencies"
+        if: ${{ matrix.dependencies == 'locked' }}
+        run: "composer install --no-interaction --no-progress"
+
+      - name: "Validate composer.json"
+        run: "composer validate --strict"
+
+      - name: "Normalize composer.json"
+        run: "composer-normalize --dry-run"
+
+      - name: "Check composer.json unused dependencies"
+        run: "composer-unused"

.github/workflows/mutation-tests.yml

@@ -0,0 +1,61 @@
+name: "Mutation tests"
+
+on:
+  pull_request:
+  push:
+
+jobs:
+  mutation-tests:
+    name: "Mutation tests"
+
+    runs-on: ${{ matrix.operating-system }}
+
+    strategy:
+      matrix:
+        dependencies:
+          - "locked"
+        php-version:
+          - "7.4"
+        operating-system:
+          - "ubuntu-latest"
+
+    steps:
+      - name: "Checkout"
+        uses: "actions/checkout@v2"
+
+      - name: "Install PHP"
+        uses: "shivammathur/setup-php@v2"
+        with:
+          coverage: "xdebug"
+          php-version: "${{ matrix.php-version }}"
+          ini-values: memory_limit=-1
+          tools: composer:v2, cs2pr
+
+      - name: Get composer cache directory
+        id: composer-cache
+        run: echo "::set-output name=dir::$(composer config cache-files-dir)"
+
+      - name: "Cache dependencies"
+        uses: "actions/cache@v2"
+        with:
+          path: ${{ steps.composer-cache.outputs.dir }}
+          key: "php-${{ matrix.php-version }}-composer-${{ matrix.dependencies }}-${{ hashFiles('**/composer.lock') }}"
+          restore-keys: "php-${{ matrix.php-version }}-composer-${{ matrix.dependencies }}-"
+
+      - name: "Install lowest dependencies"
+        if: ${{ matrix.dependencies == 'lowest' }}
+        run: "composer update --prefer-lowest --no-interaction --no-progress"
+
+      - name: "Install highest dependencies"
+        if: ${{ matrix.dependencies == 'highest' }}
+        run: "composer update --no-interaction --no-progress"
+
+      - name: "Install locked dependencies"
+        if: ${{ matrix.dependencies == 'locked' }}
+        run: "composer install --no-interaction --no-progress"
+
+      - name: "Infection"
+        run: "make infection PHPUNIT_FLAGS=--coverage-clover=coverage.xml INFECTION_FLAGS=--logger-github"
+
+      - name: "Upload Code Coverage"
+        uses: "codecov/codecov-action@v1"

.github/workflows/phpunit.yml

@@ -0,0 +1,110 @@
+name: "PHPUnit tests"
+
+on:
+  pull_request:
+  push:
+
+jobs:
+  phpunit:
+    name: "PHPUnit tests"
+
+    runs-on: ${{ matrix.operating-system }}
+
+    strategy:
+      matrix:
+        dependencies:
+          - "lowest"
+          - "highest"
+          - "locked"
+          - "development"
+        php-version:
+          - "7.4"
+        operating-system:
+          - "ubuntu-latest"
+
+    steps:
+      - name: "Checkout"
+        uses: "actions/checkout@v2"
+
+      - name: "Install PHP"
+        uses: "shivammathur/setup-php@v2"
+        with:
+          coverage: "none"
+          php-version: "${{ matrix.php-version }}"
+          ini-values: memory_limit=-1
+          tools: composer:v2, cs2pr
+
+      - name: Get composer cache directory
+        id: composer-cache
+        run: echo "::set-output name=dir::$(composer config cache-files-dir)"
+
+      - name: "Cache dependencies"
+        uses: "actions/cache@v2"
+        with:
+          path: ${{ steps.composer-cache.outputs.dir }}
+          key: "php-${{ matrix.php-version }}-composer-${{ matrix.dependencies }}-${{ hashFiles('**/composer.lock') }}"
+          restore-keys: "php-${{ matrix.php-version }}-composer-${{ matrix.dependencies }}-"
+
+      - name: "Install lowest dependencies"
+        if: ${{ matrix.dependencies == 'lowest' }}
+        run: "composer update --prefer-lowest --no-interaction --no-progress"
+
+      - name: "Install highest dependencies"
+        if: ${{ matrix.dependencies == 'highest' }}
+        run: "composer update --no-interaction --no-progress"
+
+      - name: "Install locked dependencies"
+        if: ${{ matrix.dependencies == 'locked' }}
+        run: "composer install --no-interaction --no-progress"
+
+      - name: "Install development dependencies"
+        if: ${{ matrix.dependencies == 'development' }}
+        run: "composer config minimum-stability dev && composer update --no-interaction --no-progress"
+
+      - name: "Tests"
+        run: "make phpunit"
+
+  phpunit-rc:
+    name: "PHPUnit tests (nightly)"
+
+    runs-on: ${{ matrix.operating-system }}
+
+    strategy:
+      matrix:
+        dependencies:
+          - "locked"
+        php-version:
+          - "8.0"
+          - "8.1"
+        operating-system:
+          - "ubuntu-latest"
+
+    steps:
+      - name: "Checkout"
+        uses: "actions/checkout@v2"
+
+      - name: "Install PHP"
+        uses: "shivammathur/setup-php@v2"
+        with:
+          coverage: "none"
+          php-version: "${{ matrix.php-version }}"
+          ini-values: memory_limit=-1
+          tools: composer:v2, cs2pr
+
+      - name: Get composer cache directory
+        id: composer-cache
+        run: echo "::set-output name=dir::$(composer config cache-files-dir)"
+
+      - name: "Cache dependencies"
+        uses: "actions/cache@v2"
+        with:
+          path: ${{ steps.composer-cache.outputs.dir }}
+          key: "php-${{ matrix.php-version }}-composer-${{ matrix.dependencies }}-${{ hashFiles('**/composer.lock') }}"
+          restore-keys: "php-${{ matrix.php-version }}-composer-${{ matrix.dependencies }}-"
+
+      - name: "Install locked dependencies"
+        if: ${{ matrix.dependencies == 'locked' }}
+        run: "composer install --no-interaction --no-progress --ignore-platform-req=php"
+
+      - name: "Tests"
+        run: "make phpunit"

.github/workflows/static-analysis.yml

@@ -0,0 +1,58 @@
+name: "Static Analysis"
+
+on:
+  pull_request:
+  push:
+
+jobs:
+  static-analysis:
+    name: "Static Analysis"
+
+    runs-on: ${{ matrix.operating-system }}
+
+    strategy:
+      matrix:
+        dependencies:
+          - "locked"
+        php-version:
+          - "7.4"
+        operating-system:
+          - "ubuntu-latest"
+
+    steps:
+      - name: "Checkout"
+        uses: "actions/checkout@v2"
+
+      - name: "Install PHP"
+        uses: "shivammathur/setup-php@v2"
+        with:
+          coverage: "none"
+          php-version: "${{ matrix.php-version }}"
+          ini-values: memory_limit=-1
+          tools: composer:v2, cs2pr
+
+      - name: Get composer cache directory
+        id: composer-cache
+        run: echo "::set-output name=dir::$(composer config cache-files-dir)"
+
+      - name: "Cache dependencies"
+        uses: "actions/cache@v2"
+        with:
+          path: ${{ steps.composer-cache.outputs.dir }}
+          key: "php-${{ matrix.php-version }}-composer-${{ matrix.dependencies }}-${{ hashFiles('**/composer.lock') }}"
+          restore-keys: "php-${{ matrix.php-version }}-composer-${{ matrix.dependencies }}-"
+
+      - name: "Install lowest dependencies"
+        if: ${{ matrix.dependencies == 'lowest' }}
+        run: "composer update --prefer-lowest --no-interaction --no-progress"
+
+      - name: "Install highest dependencies"
+        if: ${{ matrix.dependencies == 'highest' }}
+        run: "composer update --no-interaction --no-progress"
+
+      - name: "Install locked dependencies"
+        if: ${{ matrix.dependencies == 'locked' }}
+        run: "composer install --no-interaction --no-progress"
+
+      - name: "PHPStan"
+        run: "make phpstan"