[Form] BC break in validation

[craue]

This test passes with 3.4.40 but fails with 3.4.41 due to changes in #36865. (It also fails with 3.4.42.)

(I put it into DateTypeTest with some boilerplate code for the validator to easily switch between versions since the validator tests were moved between 3.4.41 and 3.4.42.)

I'm not sure if only DateType is affected. Just noticed this behavioral change on it.

/ping @xabbuh

diff --git Tests/Extension/Core/Type/DateTypeTest.php Tests/Extension/Core/Type/DateTypeTest.php
index cb2c2d0..a568c78 100644
--- Tests/Extension/Core/Type/DateTypeTest.php
+++ Tests/Extension/Core/Type/DateTypeTest.php
@@ -16,6 +16,12 @@
 use Symfony\Component\Form\FormInterface;
 use Symfony\Component\Intl\Util\IntlTestHelper;
 
+use Symfony\Component\Form\Extension\Validator\ValidatorExtension;
+use Symfony\Component\Form\Forms;
+use Symfony\Component\Validator\Mapping\Factory\LazyLoadingMetadataFactory;
+use Symfony\Component\Validator\Mapping\Loader\StaticMethodLoader;
+use Symfony\Component\Validator\Validation;
+
 class DateTypeTest extends BaseTypeTest
 {
     const TESTED_TYPE = 'Symfony\Component\Form\Extension\Core\Type\DateType';
@@ -220,6 +226,33 @@
         $this->assertEquals($text, $form->getViewData());
     }
 
+    public function testSubmitFormChoiceInvalid()
+    {
+        $this->validator = Validation::createValidatorBuilder()
+            ->setMetadataFactory(new LazyLoadingMetadataFactory(new StaticMethodLoader()))
+            ->getValidator();
+
+        $this->factory = Forms::createFormFactoryBuilder()
+            ->addExtension(new ValidatorExtension($this->validator))
+            ->getFormFactory();
+
+        $form = $this->factory->create(static::TESTED_TYPE, null, [
+            'widget' => 'choice',
+            'years' => [2021],
+        ]);
+
+        $form->submit([
+            'day' => '13',
+            'month' => '6',
+            'year' => '2020',
+        ]);
+
+        $this->assertTrue($form->isSubmitted());
+        $this->assertFalse($form->isValid());
+        $this->assertCount(1, $form->getErrors());
+        $this->assertSame('This value is not valid.', $form->getErrors()->current()->getMessage());
+    }
+
     public function testSubmitFromChoiceEmpty()
     {
         $form = $this->factory->create(static::TESTED_TYPE, null, [

[xabbuh]

@craue Thank you for reporting this bug. 👍 Can you confirm that #37345 solves it?

[craue]

It does, @xabbuh. Thanks.