Add continuous integration for platforms and versions (#152)

Author: Nathan Esayeas

.github/workflows/continuous-integration.yml

@@ -0,0 +1,93 @@
+name: Continuous Integration
+
+on:
+  push:
+  pull_request:
+  schedule:
+    - cron: "0 0 * * *"
+
+env:
+  COMPOSER_FLAGS: "--ansi --no-interaction --no-progress --no-suggest --prefer-dist -o -n"
+
+jobs:
+  tests:
+    strategy:
+      fail-fast: false
+      matrix:
+        php-version: [7.2, 7.3, 7.4]
+
+        laravel-version: [6, 7]
+
+        os: [ubuntu-latest]
+
+        dependencies: [locked]
+
+        experimental: [false]
+
+        include:
+          - php-version: 7.4
+            laravel-version: 7
+            dependencies: highest
+            os: ubuntu-latest
+            experimental: false
+
+          - php-version: 7.4
+            laravel-version: 7
+            os: windows-latest
+            dependencies: locked
+            experimental: false
+
+          - php-version: 7.4
+            laravel-version: 7
+            os: macos-latest
+            dependencies: locked
+            experimental: false
+
+          # - php-version: 8.0
+          #   laravel-version: 7
+          #   dependencies: highest
+          #   os: ubuntu-latest
+          #   experimental: true
+
+    name: PHP ${{ matrix.php-version }} - L${{ matrix.laravel-version }} - ${{ matrix.os }}
+
+    runs-on: ${{ matrix.os }}
+
+    continue-on-error: ${{ matrix.experimental }}
+
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v2
+
+      - name: Cache dependencies
+        uses: actions/cache@v1
+        with:
+          path: ~/.composer/cache/files
+          key: dependencies-os-${{ matrix.os }}-php-${{ matrix.php-version }}-laravel-${{ matrix.laravel-version }}-composer-${{ hashFiles('**/composer.lock') }}
+          restore-keys: dependencies-os-${{ matrix.os }}-php-${{ matrix.php-version }}-laravel-${{ matrix.laravel-version }}
+
+      - name: Setup PHP
+        uses: shivammathur/setup-php@v2
+        with:
+          php-version: ${{ matrix.php-version }}
+          extensions: dom, curl, libxml, mbstring, zip, pcntl, pdo, sqlite, pdo_sqlite, gd
+          coverage: none
+          ini-values: "memory_limit=-1"
+
+      - name: Install highest dependencies from composer.json
+        if: matrix.dependencies == 'highest'
+        run: composer config platform --unset && composer update ${{ env.COMPOSER_FLAGS }}
+
+      - name: Install lowest dependencies from composer.json
+        if: matrix.dependencies == 'lowest'
+        run: composer install ${{ env.COMPOSER_FLAGS }} --prefer-lowest
+
+      - name: Install dependencies from composer.lock
+        if: matrix.dependencies == 'locked'
+        run: composer install ${{ env.COMPOSER_FLAGS }}
+
+      - name: Select Laravel version
+        run: composer require "laravel/framework:${{ matrix.laravel-version }}.*" --no-update
+
+      - name: Run tests
+        run: vendor/bin/phpunit --verbose