--- /dev/null
+<?php
+
+/**
+ * @file
+ * Contains \Drupal\Tests\field\Unit\FieldStorageConfigEntityUnitTest.
+ */
+
+namespace Drupal\Tests\field\Unit;
+
+use Drupal\Core\DependencyInjection\ContainerBuilder;
+use Drupal\Core\Field\FieldStorageDefinitionInterface;
+use Drupal\Core\Field\FieldTypePluginManagerInterface;
+use Drupal\field\Entity\FieldStorageConfig;
+use Drupal\Tests\UnitTestCase;
+
+/**
+ * @coversDefaultClass \Drupal\field\Entity\FieldStorageConfig
+ *
+ * @group field
+ */
+class FieldStorageConfigEntityUnitTest extends UnitTestCase {
+
+ /**
+ * The entity manager used for testing.
+ *
+ * @var \Drupal\Core\Entity\EntityManagerInterface|\PHPUnit_Framework_MockObject_MockObject
+ */
+ protected $entityManager;
+
+ /**
+ * The ID of the type of the entity under test.
+ *
+ * @var string
+ */
+ protected $entityTypeId;
+
+ /**
+ * The UUID generator used for testing.
+ *
+ * @var \Drupal\Component\Uuid\UuidInterface|\PHPUnit_Framework_MockObject_MockObject
+ */
+ protected $uuid;
+
+ /**
+ * The field type manager.
+ *
+ * @var \Drupal\Core\Field\FieldTypePluginManagerInterface|\PHPUnit_Framework_MockObject_MockObject
+ */
+ protected $fieldTypeManager;
+
+ /**
+ * {@inheritdoc}
+ */
+ protected function setUp() {
+ $this->entityManager = $this->getMock('\Drupal\Core\Entity\EntityManagerInterface');
+ $this->uuid = $this->getMock('\Drupal\Component\Uuid\UuidInterface');
+ $this->fieldTypeManager = $this->getMock(FieldTypePluginManagerInterface::class);
+
+ $container = new ContainerBuilder();
+ $container->set('entity.manager', $this->entityManager);
+ $container->set('uuid', $this->uuid);
+ $container->set('plugin.manager.field.field_type', $this->fieldTypeManager);
+ \Drupal::setContainer($container);
+ }
+
+ /**
+ * @covers ::calculateDependencies
+ */
+ public function testCalculateDependencies() {
+ // Create a mock entity type for FieldStorageConfig.
+ $fieldStorageConfigentityType = $this->getMock('\Drupal\Core\Config\Entity\ConfigEntityTypeInterface');
+ $fieldStorageConfigentityType->expects($this->any())
+ ->method('getProvider')
+ ->will($this->returnValue('field'));
+
+ // Create a mock entity type to attach the field to.
+ $attached_entity_type_id = $this->randomMachineName();
+ $attached_entity_type = $this->getMock('\Drupal\Core\Entity\EntityTypeInterface');
+ $attached_entity_type->expects($this->any())
+ ->method('getProvider')
+ ->will($this->returnValue('entity_provider_module'));
+
+ // Get definition is called three times. Twice in
+ // ConfigEntityBase::addDependency() to get the provider of the field config
+ // entity type and once in FieldStorageConfig::calculateDependencies() to
+ // get the provider of the entity type that field is attached to.
+ $this->entityManager->expects($this->any())
+ ->method('getDefinition')
+ ->willReturnMap([
+ ['field_storage_config', TRUE, $fieldStorageConfigentityType],
+ [$attached_entity_type_id, TRUE, $attached_entity_type],
+ ]);
+
+ $this->fieldTypeManager->expects($this->atLeastOnce())
+ ->method('getDefinition')
+ ->with('test_field_type', FALSE)
+ ->willReturn([
+ 'class' => TestFieldType::class,
+ ]);
+
+ $field_storage = new FieldStorageConfig([
+ 'entity_type' => $attached_entity_type_id,
+ 'field_name' => 'test_field',
+ 'type' => 'test_field_type',
+ 'module' => 'test_module',
+ ]);
+
+ $dependencies = $field_storage->calculateDependencies()->getDependencies();
+ $this->assertEquals(['entity_provider_module', 'entity_test', 'test_module'], $dependencies['module']);
+ $this->assertEquals(['stark'], $dependencies['theme']);
+ }
+
+}
+
+/**
+ * A test class to test field storage dependencies.
+ *
+ * @see \Drupal\Core\Field\FieldItemInterface::calculateStorageDependencies()
+ */
+class TestFieldType {
+
+ /**
+ * {@inheritdoc}
+ */
+ public static function calculateStorageDependencies(FieldStorageDefinitionInterface $field_definition) {
+ $dependencies = [];
+ $dependencies['module'] = ['entity_test'];
+ $dependencies['theme'] = ['stark'];
+
+ return $dependencies;
+ }
+
+}