Merge branch '3.4' into 4.4

* 3.4:
  [MimeType] Duplicated MimeType due to PHP Bug
  fix guessing form types for DateTime types
  fix handling typed properties as constraint options

Author: nicolas-grekas

Extension/Validator/ValidatorTypeGuesser.php

@@ -97,6 +97,7 @@ public function guessTypeForConstraint(Constraint $constraint)
                     case 'long':
                         return new TypeGuess('Symfony\Component\Form\Extension\Core\Type\IntegerType', [], Guess::MEDIUM_CONFIDENCE);
 
+                    case \DateTime::class:
                     case '\DateTime':
                         return new TypeGuess('Symfony\Component\Form\Extension\Core\Type\DateType', [], Guess::MEDIUM_CONFIDENCE);
 

Tests/Extension/Validator/ValidatorTypeGuesserTest.php

@@ -12,9 +12,17 @@
 namespace Symfony\Component\Form\Tests\Extension\Validator;
 
 use PHPUnit\Framework\TestCase;
+use Symfony\Component\Form\Extension\Core\Type\CheckboxType;
+use Symfony\Component\Form\Extension\Core\Type\CollectionType;
+use Symfony\Component\Form\Extension\Core\Type\DateType;
+use Symfony\Component\Form\Extension\Core\Type\IntegerType;
+use Symfony\Component\Form\Extension\Core\Type\NumberType;
+use Symfony\Component\Form\Extension\Core\Type\TextType;
 use Symfony\Component\Form\Extension\Validator\ValidatorTypeGuesser;
 use Symfony\Component\Form\Guess\Guess;
+use Symfony\Component\Form\Guess\TypeGuess;
 use Symfony\Component\Form\Guess\ValueGuess;
+use Symfony\Component\Validator\Constraint;
 use Symfony\Component\Validator\Constraints\Email;
 use Symfony\Component\Validator\Constraints\File;
 use Symfony\Component\Validator\Constraints\IsTrue;
@@ -60,6 +68,35 @@ protected function setUp(): void
         $this->guesser = new ValidatorTypeGuesser($this->metadataFactory);
     }
 
+    /**
+     * @dataProvider guessTypeProvider
+     */
+    public function testGuessType(Constraint $constraint, TypeGuess $guess)
+    {
+        $this->metadata->addPropertyConstraint(self::TEST_PROPERTY, $constraint);
+
+        $this->assertEquals($guess, $this->guesser->guessType(self::TEST_CLASS, self::TEST_PROPERTY));
+    }
+
+    public function guessTypeProvider()
+    {
+        return [
+            [new Type('array'), new TypeGuess(CollectionType::class, [], Guess::MEDIUM_CONFIDENCE)],
+            [new Type('bool'), new TypeGuess(CheckboxType::class, [], Guess::MEDIUM_CONFIDENCE)],
+            [new Type('boolean'), new TypeGuess(CheckboxType::class, [], Guess::MEDIUM_CONFIDENCE)],
+            [new Type('double'), new TypeGuess(NumberType::class, [], Guess::MEDIUM_CONFIDENCE)],
+            [new Type('float'), new TypeGuess(NumberType::class, [], Guess::MEDIUM_CONFIDENCE)],
+            [new Type('numeric'), new TypeGuess(NumberType::class, [], Guess::MEDIUM_CONFIDENCE)],
+            [new Type('real'), new TypeGuess(NumberType::class, [], Guess::MEDIUM_CONFIDENCE)],
+            [new Type('int'), new TypeGuess(IntegerType::class, [], Guess::MEDIUM_CONFIDENCE)],
+            [new Type('integer'), new TypeGuess(IntegerType::class, [], Guess::MEDIUM_CONFIDENCE)],
+            [new Type('long'), new TypeGuess(IntegerType::class, [], Guess::MEDIUM_CONFIDENCE)],
+            [new Type('string'), new TypeGuess(TextType::class, [], Guess::LOW_CONFIDENCE)],
+            [new Type(\DateTime::class), new TypeGuess(DateType::class, [], Guess::MEDIUM_CONFIDENCE)],
+            [new Type('\DateTime'), new TypeGuess(DateType::class, [], Guess::MEDIUM_CONFIDENCE)],
+        ];
+    }
+
     public function guessRequiredProvider()
     {
         $allowEmptyString = property_exists(Length::class, 'allowEmptyString') ? ['allowEmptyString' => true] : [];