diff --git a/core/modules/config/lib/Drupal/config/Tests/ConfigDependencyTest.php b/core/modules/config/lib/Drupal/config/Tests/ConfigDependencyTest.php
index 0cb93e8..3777105 100644
--- a/core/modules/config/lib/Drupal/config/Tests/ConfigDependencyTest.php
+++ b/core/modules/config/lib/Drupal/config/Tests/ConfigDependencyTest.php
@@ -148,7 +148,62 @@ public function testDependencyMangement() {
     $this->assertTrue(in_array('config_test:entity4', $dependent_ids), 'config_test.dynamic.entity4 has a dependency on config_test module.');
     $this->assertTrue(in_array('config_query_test:entity1', $dependent_ids), 'config_test.query.entity1 has a dependency on config_test module.');
     $this->assertTrue(in_array('config_query_test:entity2', $dependent_ids), 'config_test.query.entity2 has a dependency on config_test module.');
+  }
 
+  /**
+   * Tests validation of configuration dependencies existence.
+   */
+  public function testDependencyValidation() {
+    $config_manager = \Drupal::service('config.manager');
+    $storage = $this->container->get('entity.manager')->getStorage('config_test');
+    $stored_entity = $storage->create(
+      array(
+        'id' => 'entity',
+        'label' => 'Entity',
+        'status' => TRUE,
+        'test_dependencies' => array(
+          'module' => array('node', 'config_test')
+        )
+      )
+    );
+    $stored_entity->save();
+
+    // Test loading an entity by it's configuration name.
+    $entity = $config_manager->getEntityByConfigName('config_test.dynamic.entity_missing');
+    $this->assertNull($entity, 'entity with configuration name config_test.dynamic.entity_missing does not exist');
+
+    $entity = $config_manager->getEntityByConfigName('config_test.dynamic.entity');
+    $this->assertNotNull($entity, 'entity with configuration name config_test.dynamic.entity exists');
+    $this->assertIdentical($entity->label(), 'Entity', 'loaded entity has label "Entity"');
+    $this->assertIdentical($entity->id(), 'entity', 'loaded entity has id "entity"');
+    $this->assertTrue($entity->status(), 'loaded entity is enabled');
+
+    // Test existence of the configuration dependecies.
+    $test_dependencies = array(
+      'module' => array('system')
+    );
+    $this->assertTrue($config_manager->validateConfigEntityDependentsExistence($test_dependencies), 'dependency system module exists');
+    $test_dependencies = array(
+      'theme' => array('stark')
+    );
+    $this->assertTrue($config_manager->validateConfigEntityDependentsExistence($test_dependencies), 'dependency stark theme exists');
+    $test_dependencies = array(
+      'entity' => array('config_test.dynamic.entity')
+    );
+    $this->assertTrue($config_manager->validateConfigEntityDependentsExistence($test_dependencies), 'dependency configuration entity config_test.dynamic.entity exists');
+
+    $test_dependencies = array(
+      'module' => array('system_missing')
+    );
+    $this->assertFalse($config_manager->validateConfigEntityDependentsExistence($test_dependencies), 'dependency system_missing module does not exist');
+    $test_dependencies = array(
+      'theme' => array('stark_missing')
+    );
+    $this->assertFalse($config_manager->validateConfigEntityDependentsExistence($test_dependencies), 'dependency stark_missing theme does not exist');
+    $test_dependencies = array(
+      'entity' => array('config_test.dynamic.entity_missing')
+    );
+    $this->assertFalse($config_manager->validateConfigEntityDependentsExistence($test_dependencies), 'dependency configuration entity config_test.dynamic.entity_missing does not exist');
   }
 
   /**
diff --git a/core/modules/config/lib/Drupal/config/Tests/ConfigSingleImportExportTest.php b/core/modules/config/lib/Drupal/config/Tests/ConfigSingleImportExportTest.php
index b45086f..a90f3fd 100644
--- a/core/modules/config/lib/Drupal/config/Tests/ConfigSingleImportExportTest.php
+++ b/core/modules/config/lib/Drupal/config/Tests/ConfigSingleImportExportTest.php
@@ -167,6 +167,8 @@ public function testImport() {
 dependencies:
   module:
     - config
+  theme:
+    - stark
   entity:
 EOD;
     $entity = $storage->load('second');