Update to Drupal 8.1.0. For more information, see https://www.drupal.org/drupal-8.1.0-release-notes

core/modules/datetime/tests/modules/datetime_test/test_views/views.view.test_argument_datetime.yml

@@ -97,3 +97,45 @@ display:
     id: embed_2
     display_title: ''
     position: null
+  embed_4:
+    display_options:
+      defaults:
+        arguments: false
+      arguments:
+        field_date_value_day:
+          field: field_date_value_week
+          id: field_date_value
+          table: node__field_date
+          plugin_id: datetime_week
+    display_plugin: embed
+    id: embed_4
+    display_title: ''
+    position: null
+  embed_5:
+    display_options:
+      defaults:
+        arguments: false
+      arguments:
+        field_date_value_day:
+          field: field_date_value_full_date
+          id: field_date_value
+          table: node__field_date
+          plugin_id: datetime_full_date
+    display_plugin: embed
+    id: embed_5
+    display_title: ''
+    position: null
+  embed_6:
+    display_options:
+      defaults:
+        arguments: false
+      arguments:
+        field_date_value_day:
+          field: field_date_value_year_month
+          id: field_date_value
+          table: node__field_date
+          plugin_id: datetime_year_month
+    display_plugin: embed
+    id: embed_6
+    display_title: ''
+    position: null

core/modules/datetime/tests/src/Kernel/DateTimeItemTest.php

@@ -0,0 +1,123 @@
+<?php
+
+namespace Drupal\Tests\datetime\Kernel;
+
+use Drupal\Core\Field\FieldItemListInterface;
+use Drupal\Core\Field\FieldItemInterface;
+use Drupal\entity_test\Entity\EntityTest;
+use Drupal\field\Entity\FieldConfig;
+use Drupal\Tests\field\Kernel\FieldKernelTestBase;
+use Drupal\field\Entity\FieldStorageConfig;
+
+/**
+ * Tests the new entity API for the date field type.
+ *
+ * @group datetime
+ */
+class DateTimeItemTest extends FieldKernelTestBase {
+
+  /**
+   * Modules to enable.
+   *
+   * @var array
+   */
+  public static $modules = array('datetime');
+
+  protected function setUp() {
+    parent::setUp();
+
+    // Create a field with settings to validate.
+    $field_storage = FieldStorageConfig::create(array(
+      'field_name' => 'field_datetime',
+      'type' => 'datetime',
+      'entity_type' => 'entity_test',
+      'settings' => array('datetime_type' => 'date'),
+    ));
+    $field_storage->save();
+    $field = FieldConfig::create([
+      'field_storage' => $field_storage,
+      'bundle' => 'entity_test',
+      'settings' => array(
+        'default_value' => 'blank',
+      ),
+    ]);
+    $field->save();
+  }
+
+  /**
+   * Tests using entity fields of the date field type.
+   */
+  public function testDateTimeItem() {
+    // Verify entity creation.
+    $entity = EntityTest::create();
+    $value = '2014-01-01T20:00:00Z';
+    $entity->field_datetime = $value;
+    $entity->name->value = $this->randomMachineName();
+    $entity->save();
+
+    // Verify entity has been created properly.
+    $id = $entity->id();
+    $entity = entity_load('entity_test', $id);
+    $this->assertTrue($entity->field_datetime instanceof FieldItemListInterface, 'Field implements interface.');
+    $this->assertTrue($entity->field_datetime[0] instanceof FieldItemInterface, 'Field item implements interface.');
+    $this->assertEqual($entity->field_datetime->value, $value);
+    $this->assertEqual($entity->field_datetime[0]->value, $value);
+
+    // Verify changing the date value.
+    $new_value = $this->randomMachineName();
+    $entity->field_datetime->value = $new_value;
+    $this->assertEqual($entity->field_datetime->value, $new_value);
+
+    // Read changed entity and assert changed values.
+    $entity->save();
+    $entity = entity_load('entity_test', $id);
+    $this->assertEqual($entity->field_datetime->value, $new_value);
+
+    // Test the generateSampleValue() method.
+    $entity = EntityTest::create();
+    $entity->field_datetime->generateSampleItems();
+    $this->entityValidateAndSave($entity);
+  }
+
+  /**
+   * Tests DateTimeItem::setValue().
+   */
+  public function testSetValue() {
+    // Test DateTimeItem::setValue() using string.
+    $entity = EntityTest::create();
+    $value = '2014-01-01T20:00:00Z';
+    $entity->get('field_datetime')->set(0, $value);
+    $entity->save();
+    // Load the entity and ensure the field was saved correctly.
+    $id = $entity->id();
+    $entity = entity_load('entity_test', $id);
+    $this->assertEqual($entity->field_datetime[0]->value, $value, 'DateTimeItem::setValue() works with string value.');
+
+    // Test DateTimeItem::setValue() using property array.
+    $entity = EntityTest::create();
+    $value = '2014-01-01T20:00:00Z';
+    $entity->set('field_datetime', $value);
+    $entity->save();
+    // Load the entity and ensure the field was saved correctly.
+    $id = $entity->id();
+    $entity = entity_load('entity_test', $id);
+    $this->assertEqual($entity->field_datetime[0]->value, $value, 'DateTimeItem::setValue() works with array value.');
+  }
+
+  /**
+   * Tests setting the value of the DateTimeItem directly.
+   */
+  public function testSetValueProperty() {
+    // Test Date::setValue().
+    $entity = EntityTest::create();
+    $value = '2014-01-01T20:00:00Z';
+
+    $entity->set('field_datetime', $value);
+    $entity->save();
+    // Load the entity and ensure the field was saved correctly.
+    $id = $entity->id();
+    $entity = entity_load('entity_test', $id);
+    $this->assertEqual($entity->field_datetime[0]->value, $value, '"Value" property can be set directly.');
+  }
+
+}