[Form] remove validation of FormRegistry::getType as FormRegistry::hasType does not validate either

also developers do not work with the registry directly anyway but through the factory. and the factory already validates the value.

Author: Tobion

FormRegistry.php

@@ -69,10 +69,6 @@ public function __construct(array $extensions, ResolvedFormTypeFactoryInterface
      */
     public function getType($name)
     {
-        if (!is_string($name)) {
-            throw new UnexpectedTypeException($name, 'string');
-        }
-
         if (!isset($this->types[$name])) {
             $type = null;
 

FormRegistryInterface.php

@@ -27,7 +27,6 @@ interface FormRegistryInterface
      *
      * @return ResolvedFormTypeInterface The type
      *
-     * @throws Exception\UnexpectedTypeException  if the passed name is not a string
      * @throws Exception\InvalidArgumentException if the type can not be retrieved from any extension
      */
     public function getType($name);

Tests/FormRegistryTest.php

@@ -172,18 +172,6 @@ public function testGetTypeConnectsParentIfGetParentReturnsInstance()
         $this->assertSame($resolvedType, $this->registry->getType('foo_sub_type_parent_instance'));
     }
 
-    /**
-     * @expectedException \Symfony\Component\Form\Exception\UnexpectedTypeException
-     */
-    public function testGetTypeThrowsExceptionIfParentNotFound()
-    {
-        $type = new FooSubType();
-
-        $this->extension1->addType($type);
-
-        $this->registry->getType($type);
-    }
-
     /**
      * @expectedException \Symfony\Component\Form\Exception\InvalidArgumentException
      */
@@ -192,14 +180,6 @@ public function testGetTypeThrowsExceptionIfTypeNotFound()
         $this->registry->getType('bar');
     }
 
-    /**
-     * @expectedException \Symfony\Component\Form\Exception\UnexpectedTypeException
-     */
-    public function testGetTypeThrowsExceptionIfNoString()
-    {
-        $this->registry->getType(array());
-    }
-
     public function testHasTypeAfterLoadingFromExtension()
     {
         $type = new FooType();