Issue #2580319 by Arla: Field configs should adjust third party settings when dependencies are removed

core/lib/Drupal/Core/Field/FieldConfigBase.php

@@ -251,9 +251,12 @@ abstract class FieldConfigBase extends ConfigEntityBase implements FieldConfigIn
    * {@inheritdoc}
    */
   public function onDependencyRemoval(array $dependencies) {
+    $changed = parent::onDependencyRemoval($dependencies);
     $field_type_manager = \Drupal::service('plugin.manager.field.field_type');
     $definition = $field_type_manager->getDefinition($this->getType());
-    $changed = $definition['class']::onDependencyRemoval($this, $dependencies);
+    if ($definition['class']::onDependencyRemoval($this, $dependencies)) {
+      $changed = TRUE;
+    }
     return $changed;
   }
 

core/modules/field/tests/src/Unit/FieldConfigEntityUnitTest.php

@@ -212,6 +212,35 @@ class FieldConfigEntityUnitTest extends UnitTestCase {
     $field->calculateDependencies();
   }
 
+  /**
+   * @covers ::onDependencyRemoval
+   */
+  public function testOnDependencyRemoval() {
+    $this->fieldTypePluginManager->expects($this->any())
+      ->method('getDefinition')
+      ->with('test_field')
+      ->willReturn(['class' => '\Drupal\Tests\field\Unit\DependencyFieldItem']);
+
+    $field = new FieldConfig([
+      'field_name' => $this->fieldStorage->getName(),
+      'entity_type' => 'test_entity_type',
+      'bundle' => 'test_bundle',
+      'field_type' => 'test_field',
+      'dependencies' => [
+        'module' => [
+          'fruiter',
+        ]
+      ],
+      'third_party_settings' => [
+        'fruiter' => [
+          'fruit' => 'apple',
+        ]
+      ]
+    ]);
+    $changed = $field->onDependencyRemoval(['module' => ['fruiter']]);
+    $this->assertTrue($changed);
+  }
+
   /**
    * @covers ::toArray
    */
@@ -290,4 +319,7 @@ class DependencyFieldItem {
     return ['module' => ['test_module3']];
   }
 
+  public static function onDependencyRemoval($field_config, $dependencies) {
+  }
+
 }