Merge pull request #71 from 10up/unit-tests

PHPUnit tests

.distignore

@@ -19,3 +19,4 @@ LICENSE.md
 package-lock.json
 package.json
 README.md
+phpunit.xml.dist

.github/workflows/phpunit.yml

@@ -0,0 +1,54 @@
+name: PHPUnit
+
+env:
+  COMPOSER_VERSION: "2"
+  COMPOSER_CACHE: "${{ github.workspace }}/.composer-cache"
+
+on:
+  push:
+    branches:
+      - develop
+      - trunk
+  pull_request:
+    branches:
+      - develop
+
+jobs:
+  phpunit:
+    name: PHP ${{ matrix.php }} on ${{ matrix.os }}
+    runs-on: ${{ matrix.os }}
+    strategy:
+      fail-fast: false
+      matrix:
+        # We claim to support from 5.6+ but WP Mock only supports 7.1+
+        php: [ '7.1', '7.2', '7.3', '7.4', '8.0', '8.1' ]
+        os: [ ubuntu-latest ]
+
+    steps:
+    - name: Checkout
+      uses: actions/checkout@v3
+
+    - name: Set standard 10up cache directories
+      run: |
+        composer config -g cache-dir "${{ env.COMPOSER_CACHE }}"
+
+    - name: Prepare composer cache
+      uses: actions/cache@v2
+      with:
+        path: ${{ env.COMPOSER_CACHE }}
+        key: composer-${{ env.COMPOSER_VERSION }}-${{ hashFiles('**/composer.lock') }}
+        restore-keys: |
+          composer-${{ env.COMPOSER_VERSION }}-
+
+    - name: Set PHP version
+      uses: shivammathur/setup-php@v2
+      with:
+        php-version: ${{ matrix.php }}
+        coverage: none
+        tools: composer:v2
+
+    - name: Install dependencies
+      run: composer update -W
+
+    - name: PHPUnit
+      run: './vendor/bin/phpunit'

.gitignore

@@ -4,3 +4,4 @@ node_modules
 tests/cypress/downloads
 tests/cypress/screenshots
 tests/cypress/videos
+.phpunit.result.cache

composer.json

@@ -24,12 +24,15 @@
 		"enshrined/svg-sanitize": "^0.15.2"
 	},
 	"require-dev": {
-		"10up/phpcs-composer": "dev-master"
+		"10up/phpcs-composer": "dev-master",
+		"10up/wp_mock": "^0.4.2",
+		"yoast/phpunit-polyfills": "^1.0"
 	},
 	"scripts": {
 		"phpcs": "./vendor/bin/phpcs . -p -s",
 		"phpcbf": "./vendor/bin/phpcbf .",
-		"phpcs:compat": "./vendor/bin/phpcs *.php includes -p --standard=PHPCompatibilityWP --extensions=php --runtime-set testVersion 7.0-"
+		"phpcs:compat": "./vendor/bin/phpcs *.php includes -p --standard=PHPCompatibilityWP --extensions=php --runtime-set testVersion 7.0-",
+		"test:unit": "./vendor/bin/phpunit"
 	},
 	"config": {
 		"allow-plugins": {