Fix custom serializer methods are added multiple times for MultiType Properties

Author: wol-soft

src/Model/Schema.php

@@ -196,13 +196,14 @@ public function getUsedClasses(array $visitedSchema = []): array
     }
 
     /**
+     * @param string $property
      * @param TransformingFilterSerializer $serializer
      *
      * @return $this
      */
-    public function addCustomSerializer(TransformingFilterSerializer $serializer): self
+    public function addCustomSerializer(string $property, TransformingFilterSerializer $serializer): self
     {
-        $this->customSerializer[] = $serializer;
+        $this->customSerializer[$property] = $serializer;
 
         return $this;
     }

src/PropertyProcessor/Filter/FilterProcessor.php

@@ -100,6 +100,7 @@ public function process(
                     $schema
                         ->addUsedClass($typeAfterFilter->getName())
                         ->addCustomSerializer(
+                            $property->getAttribute(),
                             new TransformingFilterSerializer($property->getAttribute(), $filter, $filterOptions)
                         );
                 }

tests/Basic/ErrorCollectionTest.php

@@ -37,6 +37,7 @@ public function validValuesForSinglePropertyDataProvider(): array
             'special chars' => ['+.'],
         ];
     }
+
     /**
      * @dataProvider invalidValuesForSinglePropertyDataProvider
      *

tests/Basic/FilterTest.php

@@ -650,6 +650,7 @@ public function testFilterChainWithTransformingFilterOnMultiTypeProperty(bool $i
             'FilterChainMultiType.json',
             (new GeneratorConfiguration())
                 ->setImplicitNull($implicitNull)
+                ->setSerialization(true)
                 ->addFilter(
                     $this->getCustomFilter(
                         [self::class, 'stripTimeFilter'],
@@ -670,6 +671,8 @@ public function testFilterChainWithTransformingFilterOnMultiTypeProperty(bool $i
 
         $object->setFilteredProperty(new DateTime('2020-12-12 12:12:12'));
         $this->assertSame('2020-12-12T00:00:00+00:00', $object->getFilteredProperty()->format(DateTime::ATOM));
+
+        $this->assertSame(['filteredProperty' => '2020-12-12T00:00:00+0000'], $object->toArray());
     }
 
     public function testFilterWhichAppliesToMultiTypePropertyPartiallyThrowsAnException(): void