failing test for issue 38861

src/Symfony/Bridge/Doctrine/Tests/PropertyInfo/DoctrineExtractorTest.php

@@ -78,6 +78,7 @@ class DoctrineExtractorTest extends TestCase
             'indexedBaz',
             'indexedByDt',
             'indexedByCustomType',
+            'indexedBuz',
         ]);
 
         $this->assertEquals(
@@ -197,6 +198,14 @@ class DoctrineExtractorTest extends TestCase
                 new Type(Type::BUILTIN_TYPE_OBJECT, false, DoctrineRelation::class)
             )]],
             ['indexedByCustomType', null],
+            ['indexedBuz', [new Type(
+                Type::BUILTIN_TYPE_OBJECT,
+                false,
+                Collection::class,
+                true,
+                new Type(Type::BUILTIN_TYPE_STRING),
+                new Type(Type::BUILTIN_TYPE_OBJECT, false, DoctrineRelation::class)
+            )]],
         ];
 
         if (class_exists(Types::class)) {

src/Symfony/Bridge/Doctrine/Tests/PropertyInfo/Fixtures/DoctrineDummy.php

@@ -132,4 +132,9 @@ class DoctrineDummy
      * @OneToMany(targetEntity="DoctrineRelation", mappedBy="customType", indexBy="customType")
      */
     private $indexedByCustomType;
+
+    /**
+     * @OneToMany(targetEntity="DoctrineRelation", mappedBy="buzField", indexBy="buzField")
+     */
+    protected $indexedBuz;
 }

src/Symfony/Bridge/Doctrine/Tests/PropertyInfo/Fixtures/DoctrineRelation.php

@@ -54,4 +54,10 @@ class DoctrineRelation
      * @Column(type="foo")
      */
     private $customType;
+
+    /**
+     * @Column(type="guid", name="different_than_field")
+     * @ManyToOne(targetEntity="DoctrineDummy", inversedBy="indexedBuz")
+     */
+    protected $buzField;
 }