Allow PHP 8

- update CI
- add phpstan
- upgrade phpunit to v9
- upgrade psalm

.gitattributes

@@ -1,11 +1,12 @@
 # Set the default behavior, in case people don't have core.autocrlf set.
 * text eol=lf
-/.github export-ignore
-/tests export-ignore
 /.gitattributes export-ignore
+/.gitignore export-ignore
+/.github export-ignore
 /infection.json.dist export-ignore
 /Makefile export-ignore
 /phpcs.xml.dist export-ignore
+/phpstan.neon.dist export-ignore
 /phpunit.xml.dist export-ignore
 /psalm.xml.dist export-ignore
-.gitignore export-ignore
+/tests export-ignore

.github/workflows/coding-standards.yml

@@ -0,0 +1,34 @@
+name: "Coding Standards"
+
+on:
+  pull_request:
+  push:
+    branches:
+      - "master"
+
+jobs:
+  coding-standards:
+    name: "Coding Standards"
+    runs-on: "ubuntu-20.04"
+
+    strategy:
+      matrix:
+        php-version:
+          - "7.4"
+
+    steps:
+      - name: "Checkout"
+        uses: "actions/checkout@v2"
+
+      - name: "Install PHP"
+        uses: "shivammathur/setup-php@v2"
+        with:
+          coverage: "none"
+          php-version: "${{ matrix.php-version }}"
+          tools: "cs2pr"
+
+      - name: "Install dependencies with Composer"
+        uses: "ramsey/composer-install@v1"
+
+      - name: "Run PHP_CodeSniffer"
+        run: "vendor/bin/phpcs -q --no-colors --report=checkstyle | cs2pr"

.github/workflows/continuous-integration.yml

@@ -0,0 +1,74 @@
+name: "Continuous Integration"
+
+on:
+  pull_request:
+  push:
+    branches:
+      - "master"
+  schedule:
+    - cron: "42 3 * * *"
+
+jobs:
+  phpunit:
+    name: "PHPUnit"
+    runs-on: "ubuntu-20.04"
+
+    strategy:
+      matrix:
+        php-version:
+          - "7.4"
+          - "8.0"
+        dependencies:
+          - "highest"
+        include:
+          - dependencies: "lowest"
+            php-version: "7.4"
+
+    steps:
+      - name: "Checkout"
+        uses: "actions/checkout@v2"
+        with:
+          fetch-depth: 2
+
+      - name: "Install PHP"
+        uses: "shivammathur/setup-php@v2"
+        with:
+          php-version: "${{ matrix.php-version }}"
+          coverage: "pcov"
+          ini-values: "zend.assertions=1"
+
+      - name: "Install dependencies with Composer"
+        uses: "ramsey/composer-install@v1"
+        with:
+          dependency-versions: "${{ matrix.dependencies }}"
+
+      - name: "Run PHPUnit"
+        run: "vendor/bin/phpunit --coverage-clover=coverage.xml"
+
+      - name: "Upload coverage file"
+        uses: "actions/upload-artifact@v2"
+        with:
+          name: "phpunit-${{ matrix.deps }}-${{ matrix.php-version }}.coverage"
+          path: "coverage.xml"
+
+  upload_coverage:
+    name: "Upload coverage to Codecov"
+    runs-on: "ubuntu-20.04"
+    needs:
+      - "phpunit"
+
+    steps:
+      - name: "Checkout"
+        uses: "actions/checkout@v2"
+        with:
+          fetch-depth: 2
+
+      - name: "Download coverage files"
+        uses: "actions/download-artifact@v2"
+        with:
+          path: "reports"
+
+      - name: "Upload to Codecov"
+        uses: "codecov/codecov-action@v1"
+        with:
+          directory: reports

.github/workflows/infection.yaml

@@ -11,19 +11,19 @@ jobs:
     runs-on: ubuntu-20.04
 
     steps:
-      - uses: actions/checkout@v2
+      - name: "Checkout"
+        uses: "actions/checkout@v2"
+        with:
+          fetch-depth: 2
 
-      - name: Install PHP
-        uses: shivammathur/setup-php@v2
+      - name: "Install PHP"
+        uses: "shivammathur/setup-php@v2"
         with:
-          php-version: 7.3
-          coverage: pcov
-          extensions: json
+          php-version: 7.4
+          coverage: "pcov"
 
-      - name: Install Dependencies
-        run: |
-          composer install --prefer-dist --no-progress --no-suggest
-          composer require --dev infection/infection
+      - name: "Install dependencies with Composer"
+        uses: "ramsey/composer-install@v1"
 
       - name: Run Infection
         run: vendor/bin/infection --min-msi=90 --min-covered-msi=90 --log-verbosity=none -s

.github/workflows/static-analysis.yml

@@ -0,0 +1,59 @@
+name: "Static Analysis"
+
+on:
+  pull_request:
+  push:
+    branches:
+      - "master"
+
+jobs:
+  static-analysis-phpstan:
+    name: "Static Analysis with PHPStan"
+    runs-on: "ubuntu-20.04"
+
+    strategy:
+      matrix:
+        php-version:
+          - "7.4"
+
+    steps:
+      - name: "Checkout code"
+        uses: "actions/checkout@v2"
+
+      - name: "Install PHP"
+        uses: "shivammathur/setup-php@v2"
+        with:
+          coverage: "none"
+          php-version: "${{ matrix.php-version }}"
+          tools: "cs2pr"
+
+      - name: "Install dependencies with Composer"
+        uses: "ramsey/composer-install@v1"
+
+      - name: "Run a static analysis with phpstan/phpstan"
+        run: "vendor/bin/phpstan analyse --error-format=checkstyle | cs2pr"
+
+  static-analysis-psalm:
+    name: "Static Analysis with Psalm"
+    runs-on: "ubuntu-20.04"
+
+    strategy:
+      matrix:
+        php-version:
+          - "7.4"
+
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v2
+
+      - name: Psalm
+        uses: docker://vimeo/psalm-github-actions:4.4.1
+        with:
+          args: --shepherd
+          composer_require_dev: true
+          security_analysis: true
+          report_file: results.sarif
+      - name: Upload Security Analysis results to GitHub
+        uses: github/codeql-action/upload-sarif@v1
+        with:
+          sarif_file: results.sarif

.gitignore

@@ -1,11 +1,8 @@
 /.phpcs-cache
+/.phpunit.result.cache
 /composer.lock
 /phpcs.xml
+/phpstan.neon
 /psalm.xml
 /phpunit.xml
-/vendor
-/infection.json
-/infection-log.txt
-.phpunit.result.cache
-/infection.json
-/infection-log.txt
+/vendor/