Implement PHP checks

.github/workflows/phpcs.yml

@@ -0,0 +1,59 @@
+name: PHPCS
+run-name: Run PHPCS on `${{ github.head_ref }}`
+
+on:
+  push:
+    branches:
+      - master
+    paths:
+      - Plugin.php
+      - includes/**
+      - .github/workflows/phpcs.yml
+  pull_request:
+    paths:
+      - Plugin.php
+      - includes/**
+      - .github/workflows/phpcs.yml
+  workflow_dispatch:
+
+concurrency:
+  group: ${{ github.workflow }}-${{ github.event.pull_request.number || github.ref }}
+  cancel-in-progress: true
+
+jobs:
+  phpcs:
+    runs-on: ubuntu-latest
+    steps:
+
+      - uses: actions/checkout@v3
+
+      - name: Detect File Changes
+        uses: dorny/paths-filter@v2
+        id: filter
+        with:
+          list-files: shell
+          filters: |
+            wpcontent:
+              - added|modified: 'Plugin.php'
+              - added|modified: 'includes/**/*.php'
+
+      - name: Setup PHP
+        if: ${{ steps.filter.outputs.wpcontent == 'true' }}
+        uses: "shivammathur/setup-php@v2"
+        with:
+          php-version: "8.1"
+          ini-values: "memory_limit=1G"
+          coverage: none
+
+      - name: Validate composer.json and composer.lock
+        if: ${{ steps.filter.outputs.wpcontent == 'true' }}
+        run: composer validate --no-check-publish
+
+      - name: Install Composer dependencies
+        if: ${{ steps.filter.outputs.wpcontent == 'true' }}
+        run: |
+          composer install --prefer-dist --no-progress --no-suggest --optimize-autoloader
+
+      - name: Run PHPCS checks
+        if: ${{ steps.filter.outputs.wpcontent == 'true' }}
+        run: ./vendor/bin/phpcs ${{ steps.filter.outputs.wpcontent_files }}

.github/workflows/phpstan.yml

@@ -0,0 +1,59 @@
+name: PHPStan
+run-name: Run PHPStan on `${{ github.head_ref }}`
+
+on:
+  push:
+    branches:
+      - master
+    paths:
+      - Plugin.php
+      - includes/**
+      - .github/workflows/phpstan.yml
+  pull_request:
+    paths:
+      - Plugin.php
+      - includes/**
+      - .github/workflows/phpstan.yml
+  workflow_dispatch:
+
+concurrency:
+  group: ${{ github.workflow }}-${{ github.event.pull_request.number || github.ref }}
+  cancel-in-progress: true
+
+jobs:
+  phpstan:
+    runs-on: ubuntu-latest
+    steps:
+
+      - uses: actions/checkout@v3
+
+      - name: Detect File Changes
+        uses: dorny/paths-filter@v2
+        id: filter
+        with:
+          list-files: shell
+          filters: |
+            wpcontent:
+              - added|modified: 'Plugin.php'
+              - added|modified: 'includes/**/*.php'
+
+      - name: Setup PHP
+        if: ${{ steps.filter.outputs.wpcontent == 'true' }}
+        uses: "shivammathur/setup-php@v2"
+        with:
+          php-version: "8.1"
+          ini-values: "memory_limit=1G"
+          coverage: none
+
+      - name: Validate composer.json and composer.lock
+        if: ${{ steps.filter.outputs.wpcontent == 'true' }}
+        run: composer validate --no-check-publish
+
+      - name: Install Composer dependencies
+        if: ${{ steps.filter.outputs.wpcontent == 'true' }}
+        run: |
+          composer install --prefer-dist --no-progress --no-suggest --optimize-autoloader
+
+      - name: Run PHPStan checks
+        if: ${{ steps.filter.outputs.wpcontent == 'true' }}
+        run: ./vendor/bin/phpstan analyse ${{ steps.filter.outputs.wpcontent_files }}

.github/workflows/phpunit.yml

@@ -1,13 +1,21 @@
 name: PHPUnit
+run-name: Run PHPUnit on `${{ github.head_ref }}`
 
 on:
   push:
+    branches:
+      - master
     paths:
       - Plugin.php
       - includes/**
       - tests/**
       - .github/workflows/phpunit.yml
   pull_request:
+    paths:
+      - Plugin.php
+      - includes/**
+      - tests/**
+      - .github/workflows/phpunit.yml
   workflow_dispatch:
 
 jobs:
@@ -16,7 +24,7 @@ jobs:
     strategy:
       matrix:
         operating-system: [ubuntu-latest]
-        php-versions: ['7.4']
+        php-versions: ['8.1']
     name: PHP ${{ matrix.php-versions }} Test on ${{ matrix.operating-system }}
     services:
       mysql:
@@ -36,7 +44,7 @@ jobs:
       WP_MULTISITE: '0'
     steps:
     - name: Checkout
-      uses: actions/checkout@v1
+      uses: actions/checkout@v3
 
     - name: Setup PHP
       uses: shivammathur/setup-php@v2
@@ -45,15 +53,13 @@ jobs:
         ini-values: post_max_size=256M
         coverage: xdebug #optional, setup coverage driver
         extensions: mysqli, mbstring, intl
-        tools: composer:v1
 
     - name: Check PHP Version
       run: php -v
 
     - name: Get Composer cache directory
-      working-directory: ./tests
       id: composer-cache
-      run: echo "::set-output name=dir::$(composer config cache-files-dir)"
+      run: echo "dir=$(composer config cache-files-dir)" >> $GITHUB_OUTPUT
 
     - name: Set up Composer caching
       uses: actions/[email protected]
@@ -66,11 +72,10 @@ jobs:
           ${{ runner.os }}-composer-
 
     - name: Composer install
-      working-directory: ./tests
       run: composer install --optimize-autoloader --prefer-dist --no-suggest --no-progress --no-ansi --no-interaction
 
     - name: Install WP Tests
       run: ./bin/install-wp-tests.sh ${MYSQL_DATABASE} ${MYSQL_USER} ${MYSQL_PASSWORD} ${DB_HOST}:${DB_PORT} ${WP_VERSION}
 
     - name: phpunit tests
-      run: ./tests/vendor/bin/phpunit --coverage-text
+      run: ./vendor/bin/phpunit --coverage-text

.gitignore

@@ -1,2 +1,4 @@
 /report
-/tests/vendor
+/vendor
+/.phpstan-cache
+/.phpunit.result.cache

Plugin.php

@@ -36,11 +36,12 @@ final class Plugin {
 	 *
 	 * @return self
 	 */
-	static function instance() : self {
+	public static function instance() : self {
 		static $instance = null;
 
-		if ( is_null( $instance ) )
+		if ( is_null( $instance ) ) {
 			$instance = new self; // @codeCoverageIgnore
+		}
 
 		return $instance;
 	}
@@ -51,10 +52,8 @@ static function instance() : self {
 	 * @codeCoverageIgnore
 	 */
 	protected function __construct() {
-
 		add_action( 'template_redirect', array( $this, 'action__template_redirect' ), 100 );
 		add_action( 'admin_init', array( $this, 'action__admin_init' ) );
-
 	}
 
 	/**
@@ -66,11 +65,20 @@ protected function __construct() {
 	 *
 	 * @codeCoverageIgnore
 	 */
-	function action__template_redirect() : void {
+	public function action__template_redirect() : void {
 		static::include_files();
 	}
 
-	function action__admin_init() : void {
+	/**
+	 * Action: admin_init
+	 *
+	 * - include files, except for AJAX requests
+	 *
+	 * @uses static::includes()
+	 *
+	 * @codeCoverageIgnore
+	 */
+	public function action__admin_init() : void {
 		if ( ! wp_doing_ajax() ) {
 			return;
 		}
@@ -83,7 +91,7 @@ function action__admin_init() : void {
 	 *
 	 * @return string
 	 */
-	static function dir() : string {
+	public static function dir() : string {
 		return trailingslashit( __DIR__ );
 	}
 
@@ -93,7 +101,7 @@ static function dir() : string {
 	 * @uses static::dir()
 	 * @return string
 	 */
-	static function inc() : string {
+	public static function inc() : string {
 		return static::dir() . 'includes/';
 	}
 
@@ -105,7 +113,7 @@ static function inc() : string {
 	 *
 	 * @codeCoverageIgnore
 	 */
-	static function include_files() : void {
+	public static function include_files() : void {
 		$dir = static::inc();
 
 		# Interfaces.
@@ -126,11 +134,8 @@ static function include_files() : void {
 
 		# Base.
 		require_once $dir . 'types/Image_Tag.php';
-
 	}
 
 }
 
 Plugin::instance();
-
-?>

composer.json

@@ -0,0 +1,21 @@
+{
+    "require-dev": {
+        "yoast/phpunit-polyfills": "^1.0",
+        "phpcompatibility/phpcompatibility-wp": "^2.1",
+        "dealerdirect/phpcodesniffer-composer-installer": "^0.7.1",
+        "automattic/vipwpcs": "^2.3",
+        "phpunit/phpunit": "^9",
+        "assertwell/wp-core-test-framework": "^0.2.0",
+        "phpstan/phpstan": "^1.6",
+        "php-stubs/wordpress-stubs": "^5.9",
+        "szepeviktor/phpstan-wordpress": "^1.1",
+        "phpstan/extension-installer": "^1.1",
+        "php-stubs/acf-pro-stubs": "^5.12"
+    },
+    "config": {
+        "allow-plugins": {
+            "dealerdirect/phpcodesniffer-composer-installer": true,
+            "phpstan/extension-installer": true
+        }
+    }
+}