[FormBundle] Deprecate service class parameters

src/Kunstmaan/FormBundle/DependencyInjection/Compiler/DeprecateClassParametersPass.php

@@ -0,0 +1,31 @@
+<?php
+
+namespace Kunstmaan\FormBundle\DependencyInjection\Compiler;
+
+use Symfony\Component\DependencyInjection\Compiler\CompilerPassInterface;
+use Symfony\Component\DependencyInjection\ContainerBuilder;
+
+/**
+ * @internal
+ */
+final class DeprecateClassParametersPass implements CompilerPassInterface
+{
+    public function process(ContainerBuilder $container)
+    {
+        $expectedValues = [
+            'kunstmaan_form.form_mailer.class' => \Kunstmaan\FormBundle\Helper\FormMailer::class,
+            'kunstmaan_form.form_handler.class' => \Kunstmaan\FormBundle\Helper\FormHandler::class,
+        ];
+
+        foreach ($expectedValues as $parameter => $expectedValue) {
+            if (false === $container->hasParameter($parameter)) {
+                continue;
+            }
+
+            $currentValue = $container->getParameter($parameter);
+            if ($currentValue !== $expectedValue) {
+                @trigger_error(sprintf('Using the "%s" parameter to change the class of the service definition is deprecated in KunstmaanFormBundle 5.2 and will be removed in KunstmaanFormBundle 6.0. Use service decoration or a service alias instead.', $parameter), E_USER_DEPRECATED);
+            }
+        }
+    }
+}

src/Kunstmaan/FormBundle/KunstmaanFormBundle.php

@@ -2,11 +2,17 @@
 
 namespace Kunstmaan\FormBundle;
 
+use Kunstmaan\FormBundle\DependencyInjection\Compiler\DeprecateClassParametersPass;
+use Symfony\Component\DependencyInjection\ContainerBuilder;
 use Symfony\Component\HttpKernel\Bundle\Bundle;
 
 /**
  * KunstmaanFormBundle
  */
 class KunstmaanFormBundle extends Bundle
 {
+    public function build(ContainerBuilder $container)
+    {
+        $container->addCompilerPass(new DeprecateClassParametersPass());
+    }
 }

src/Kunstmaan/FormBundle/Tests/unit/DependencyInjection/Compiler/DeprecateClassParametersPassTest.php

@@ -0,0 +1,27 @@
+<?php
+
+namespace Kunstmaan\FormBundle\Tests\DependencyInjection\Compiler;
+
+use Kunstmaan\FormBundle\DependencyInjection\Compiler\DeprecateClassParametersPass;
+use Matthias\SymfonyDependencyInjectionTest\PhpUnit\AbstractCompilerPassTestCase;
+use Symfony\Component\DependencyInjection\ContainerBuilder;
+use Symfony\Component\DependencyInjection\Definition;
+
+class DeprecateClassParametersPassTest extends AbstractCompilerPassTestCase
+{
+    protected function registerCompilerPass(ContainerBuilder $container)
+    {
+        $container->addCompilerPass(new DeprecateClassParametersPass());
+    }
+
+    /**
+     * @group legacy
+     * @expectedDeprecation Using the "%s" parameter to change the class of the service definition is deprecated in KunstmaanFormBundle 5.2 and will be removed in KunstmaanFormBundle 6.0. Use service decoration or a service alias instead.
+     */
+    public function testServiceClassParameterOverride()
+    {
+        $this->setParameter('kunstmaan_form.form_mailer.class', 'Custom\Class');
+
+        $this->compile();
+    }
+}