class DateTimeIso8601NormalizerTest

class DateTimeIso8601NormalizerTest extends UnitTestCase {
  
  /**
   * The tested data type's normalizer.
   *
   * @var \Drupal\serialization\Normalizer\DateTimeIso8601Normalizer
   */
  protected $normalizer;
  
  /**
   * The tested data type.
   *
   * @var \Drupal\Core\TypedData\Plugin\DataType\DateTimeIso8601
   */
  protected $data;
  
  /**
   * {@inheritdoc}
   */
  protected function setUp() : void {
    parent::setUp();
    $system_date_config = $this->prophesize(ImmutableConfig::class);
    $system_date_config->get('timezone.default')
      ->willReturn('Australia/Sydney');
    $config_factory = $this->prophesize(ConfigFactoryInterface::class);
    $config_factory->get('system.date')
      ->willReturn($system_date_config->reveal());
    $this->normalizer = new DateTimeIso8601Normalizer($config_factory->reveal());
    $this->data = $this->prophesize(DateTimeIso8601::class);
  }
  
  /**
   * @covers ::supportsNormalization
   */
  public function testSupportsNormalization() : void {
    $this->assertTrue($this->normalizer
      ->supportsNormalization($this->data
      ->reveal()));
    $datetime = $this->prophesize(DateTimeInterface::class);
    $this->assertFalse($this->normalizer
      ->supportsNormalization($datetime->reveal()));
    $integer = $this->prophesize(IntegerData::class);
    $this->assertFalse($this->normalizer
      ->supportsNormalization($integer->reveal()));
  }
  
  /**
   * @covers ::supportsDenormalization
   */
  public function testSupportsDenormalization() : void {
    $this->assertTrue($this->normalizer
      ->supportsDenormalization($this->data
      ->reveal(), DateTimeIso8601::class));
  }
  
  /**
   * @covers ::normalize
   * @dataProvider providerTestNormalize
   */
  public function testNormalize($parent_field_item_class, $datetime_type, $expected_format) : void {
    $formatted_string = $this->randomMachineName();
    $field_item = $this->prophesize($parent_field_item_class);
    if ($parent_field_item_class === DateTimeItem::class) {
      $field_storage_definition = $this->prophesize(FieldStorageDefinitionInterface::class);
      $field_storage_definition->getSetting('datetime_type')
        ->willReturn($datetime_type);
      $field_definition = $this->prophesize(FieldDefinitionInterface::class);
      $field_definition->getFieldStorageDefinition()
        ->willReturn($field_storage_definition);
      $field_item->getFieldDefinition()
        ->willReturn($field_definition);
    }
    else {
      $field_item->getFieldDefinition(Argument::any())
        ->shouldNotBeCalled();
    }
    $this->data
      ->getParent()
      ->willReturn($field_item);
    $drupal_date_time = $this->prophesize(DateTimeIso8601NormalizerTestDrupalDateTime::class);
    $drupal_date_time->setTimezone(new \DateTimeZone('Australia/Sydney'))
      ->willReturn($drupal_date_time->reveal());
    $drupal_date_time->format($expected_format)
      ->willReturn($formatted_string);
    $this->data
      ->getDateTime()
      ->willReturn($drupal_date_time->reveal());
    $normalized = $this->normalizer
      ->normalize($this->data
      ->reveal());
    $this->assertSame($formatted_string, $normalized);
  }
  
  /**
   * @covers ::normalize
   * @dataProvider providerTestNormalize
   */
  public function testNormalizeWhenNull($parent_field_item_class, $datetime_type, $expected_format) : void {
    $field_item = $this->prophesize($parent_field_item_class);
    if ($parent_field_item_class === DateTimeItem::class) {
      $field_storage_definition = $this->prophesize(FieldStorageDefinitionInterface::class);
      $field_storage_definition->getSetting('datetime_type')
        ->willReturn($datetime_type);
      $field_definition = $this->prophesize(FieldDefinitionInterface::class);
      $field_definition->getFieldStorageDefinition()
        ->willReturn($field_storage_definition);
      $field_item->getFieldDefinition()
        ->willReturn($field_definition);
    }
    else {
      $field_item->getFieldDefinition(Argument::any())
        ->shouldNotBeCalled();
    }
    $this->data
      ->getParent()
      ->willReturn($field_item);
    $this->data
      ->getDateTime()
      ->willReturn(NULL);
    $normalized = $this->normalizer
      ->normalize($this->data
      ->reveal());
    $this->assertNull($normalized);
  }
  
  /**
   * Data provider for testNormalize.
   *
   * @return array
   */
  public static function providerTestNormalize() {
    return [
      // @see \Drupal\datetime\Plugin\Field\FieldType\DateTimeItem::DATETIME_TYPE_DATE
'datetime field, configured to store only date: must be handled by DateTimeIso8601Normalizer' => [
        DateTimeItem::class,
        DateTimeItem::DATETIME_TYPE_DATE,
        // This expected format call proves that normalization is handled by \Drupal\serialization\Normalizer\DateTimeIso8601Normalizer::normalize().
'Y-m-d',
      ],
      // @see \Drupal\datetime\Plugin\Field\FieldType\DateTimeItem::DATETIME_TYPE_DATETIME
'datetime field, configured to store date and time; must be handled by the parent normalizer' => [
        DateTimeItem::class,
        DateTimeItem::DATETIME_TYPE_DATETIME,
        \DateTime::RFC3339,
      ],
      'non-datetime field; must be handled by the parent normalizer' => [
        FieldItemBase::class,
        NULL,
        \DateTime::RFC3339,
      ],
    ];
  }
  
  /**
   * Tests the denormalize function with good data.
   *
   * @covers ::denormalize
   * @dataProvider providerTestDenormalizeValidFormats
   */
  public function testDenormalizeValidFormats($type, $normalized, $expected) : void {
    $field_definition = $this->prophesize(FieldDefinitionInterface::class);
    $field_definition->getSetting('datetime_type')
      ->willReturn($type === 'date-only' ? DateTimeItem::DATETIME_TYPE_DATE : DateTimeItem::DATETIME_TYPE_DATETIME);
    $denormalized = $this->normalizer
      ->denormalize($normalized, DateTimeIso8601::class, NULL, [
      'field_definition' => $field_definition->reveal(),
    ]);
    $this->assertSame($expected, $denormalized);
  }
  
  /**
   * Data provider for testDenormalizeValidFormats.
   *
   * @return array
   */
  public static function providerTestDenormalizeValidFormats() {
    $data = [];
    $data['just a date'] = [
      'date-only',
      '2016-11-06',
      '2016-11-06',
    ];
    $data['RFC3339'] = [
      'date+time',
      '2016-11-06T09:02:00+00:00',
      '2016-11-06T09:02:00',
    ];
    $data['RFC3339 +0100'] = [
      'date+time',
      '2016-11-06T09:02:00+01:00',
      '2016-11-06T08:02:00',
    ];
    $data['RFC3339 -0600'] = [
      'date+time',
      '2016-11-06T09:02:00-06:00',
      '2016-11-06T15:02:00',
    ];
    $data['ISO8601'] = [
      'date+time',
      '2016-11-06T09:02:00+0000',
      '2016-11-06T09:02:00',
    ];
    $data['ISO8601 +0100'] = [
      'date+time',
      '2016-11-06T09:02:00+0100',
      '2016-11-06T08:02:00',
    ];
    $data['ISO8601 -0600'] = [
      'date+time',
      '2016-11-06T09:02:00-0600',
      '2016-11-06T15:02:00',
    ];
    return $data;
  }
  
  /**
   * Tests the denormalize function with bad data for the date-only case.
   *
   * @covers ::denormalize
   */
  public function testDenormalizeDateOnlyException() : void {
    $this->expectException(UnexpectedValueException::class);
    $this->expectExceptionMessage('The specified date "2016/11/06" is not in an accepted format: "Y-m-d" (date-only).');
    $normalized = '2016/11/06';
    $field_definition = $this->prophesize(FieldDefinitionInterface::class);
    $field_definition->getSetting('datetime_type')
      ->willReturn(DateTimeItem::DATETIME_TYPE_DATE);
    $this->normalizer
      ->denormalize($normalized, DateTimeIso8601::class, NULL, [
      'field_definition' => $field_definition->reveal(),
    ]);
  }
  
  /**
   * Tests the denormalize function with bad data for the date+time case.
   *
   * @covers ::denormalize
   */
  public function testDenormalizeDateAndTimeException() : void {
    $this->expectException(UnexpectedValueException::class);
    $this->expectExceptionMessage('The specified date "on a rainy day" is not in an accepted format: "Y-m-d\\TH:i:sP" (RFC 3339), "Y-m-d\\TH:i:sO" (ISO 8601).');
    $normalized = 'on a rainy day';
    $field_definition = $this->prophesize(FieldDefinitionInterface::class);
    $field_definition->getSetting('datetime_type')
      ->willReturn(DateTimeItem::DATETIME_TYPE_DATETIME);
    $this->normalizer
      ->denormalize($normalized, DateTimeIso8601::class, NULL, [
      'field_definition' => $field_definition->reveal(),
    ]);
  }
  
  /**
   * Tests the denormalize function with incomplete serialization context.
   *
   * @covers ::denormalize
   */
  public function testDenormalizeNoTargetInstanceOrFieldDefinitionException() : void {
    $this->expectException(InvalidArgumentException::class);
    $this->expectExceptionMessage('$context[\'target_instance\'] or $context[\'field_definition\'] must be set to denormalize with the DateTimeIso8601Normalizer');
    $this->normalizer
      ->denormalize('', DateTimeIso8601::class, NULL, []);
  }

}