Added GitHub Actions CI workflow

Author: Six

.github/workflows/ci.yml

@@ -0,0 +1,40 @@
+name: CI
+
+on:
+  push:
+    branches: [ main ]
+  pull_request:
+    branches: [ main ]
+
+jobs:
+  test:
+    runs-on: ubuntu-latest
+    
+    strategy:
+      matrix:
+        php-version: ['8.3']
+    
+    steps:
+    - uses: actions/checkout@v4
+    
+    - name: Setup PHP
+      uses: shivammathur/setup-php@v2
+      with:
+        php-version: ${{ matrix.php-version }}
+        extensions: gmp, xdebug
+        coverage: xdebug
+    
+    - name: Install dependencies
+      run: composer install --prefer-dist --no-progress
+    
+    - name: Run PHPStan
+      run: composer stan
+    
+    - name: Run tests with coverage
+      run: composer coverage
+    
+    - name: Upload coverage to Codecov
+      uses: codecov/codecov-action@v3
+      with:
+        file: ./coverage.xml
+        fail_ci_if_error: true

README.md

@@ -1,6 +1,7 @@
 # blibio/combinatorics
 
 [![Software License][badge-license]][license]
+[![Coverage Status][badge-coverage]][coverage]
 
 Simple PHP 8.3+ [generators][] to create:
 
@@ -41,4 +42,6 @@ The blibio/combinatorics library is copyright © Stephan Six and licensed for us
 [combinations]: https://en.wikipedia.org/wiki/Combination
 [permutations]: https://en.wikipedia.org/wiki/Permutation
 [badge-license]: https://img.shields.io/badge/license-MIT-brightgreen.svg?style=flat-square
-[license]: https://github.com/blibio/combinatorics/blob/main/LICENSE
+[badge-coverage]: https://codecov.io/gh/blibio/combinatorics/branch/main/graph/badge.svg
+[license]: https://github.com/blibio/combinatorics/blob/main/LICENSE
+[coverage]: https://codecov.io/gh/blibio/combinatorics

composer.json

@@ -50,7 +50,7 @@
     "scripts": {
         "test": "phpunit",
         "stan": "phpstan analyse",
-        "coverage": "XDEBUG_MODE=coverage phpunit --coverage-html coverage-html --coverage-text",
+        "coverage": "XDEBUG_MODE=coverage phpunit --coverage-html coverage-html --coverage-text --coverage-clover coverage.xml",
         "coverage-text": "XDEBUG_MODE=coverage phpunit --coverage-text",
         "cs-fix": "php-cs-fixer fix",
         "cs-check": "php-cs-fixer fix --dry-run --diff"