Fix PHPUnit execution inside wp-env container

- Set --env-cwd to the plugin directory so PHPUnit finds phpunit.xml.dist
- Remove convertDeprecationsToExceptions attribute for PHPUnit 10 compat

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

Author: dd32

.github/workflows/tests.yml

@@ -68,7 +68,7 @@ jobs:
           WP_ENV_LIFECYCLE_TIMEOUT: 300
 
       - name: Run PHP tests via wp-env
-        run: npx wp-env run tests-cli phpunit
+        run: npx wp-env run tests-cli --env-cwd=wp-content/plugins/multi-author-posts phpunit
 
       - name: Stop wp-env
         if: always()

package.json

@@ -8,7 +8,7 @@
 		"build": "wp-scripts build",
 		"start": "wp-scripts start",
 		"test:unit": "wp-scripts test-unit-js --testPathPattern=tests/js",
-		"test:php": "wp-env run tests-cli phpunit",
+		"test:php": "wp-env run tests-cli --env-cwd=wp-content/plugins/multi-author-posts phpunit",
 		"test": "npm run test:unit && npm run test:php",
 		"env:start": "wp-env start",
 		"env:stop": "wp-env stop",

phpunit.xml.dist

@@ -4,7 +4,6 @@
 	xsi:noNamespaceSchemaLocation="https://schema.phpunit.de/9.6/phpunit.xsd"
 	bootstrap="tests/bootstrap.php"
 	colors="true"
-	convertDeprecationsToExceptions="false"
 >
 	<testsuites>
 		<testsuite name="php">