class TimestampNormalizerTest

class TimestampNormalizerTest extends UnitTestCase {
  
  /**
   * The tested data type's normalizer.
   *
   * @var \Drupal\serialization\Normalizer\TimestampNormalizer
   */
  protected $normalizer;
  
  /**
   * The tested data type.
   *
   * @var \Drupal\Core\Field\Plugin\Field\FieldType\TimestampItem
   */
  protected $data;
  
  /**
   * {@inheritdoc}
   */
  protected function setUp() : void {
    parent::setUp();
    $this->normalizer = new TimestampNormalizer($this->prophesize(ConfigFactoryInterface::class)
      ->reveal());
    $this->data = $this->prophesize(Timestamp::class);
  }
  
  /**
   * @covers ::supportsNormalization
   */
  public function testSupportsNormalization() {
    $this->assertTrue($this->normalizer
      ->supportsNormalization($this->data
      ->reveal()));
    $integer = $this->prophesize(IntegerData::class);
    $this->assertFalse($this->normalizer
      ->supportsNormalization($integer->reveal()));
    $datetime = $this->prophesize(DateTimeInterface::class);
    $this->assertFalse($this->normalizer
      ->supportsNormalization($datetime->reveal()));
  }
  
  /**
   * @covers ::supportsDenormalization
   */
  public function testSupportsDenormalization() {
    $this->assertTrue($this->normalizer
      ->supportsDenormalization($this->data
      ->reveal(), Timestamp::class));
  }
  
  /**
   * @covers ::normalize
   */
  public function testNormalize() {
    $random_rfc_3339_string = $this->randomMachineName();
    $drupal_date_time = $this->prophesize(TimestampNormalizerTestDrupalDateTime::class);
    $drupal_date_time->setTimezone(new \DateTimeZone('UTC'))
      ->willReturn($drupal_date_time->reveal());
    $drupal_date_time->format(\DateTime::RFC3339)
      ->willReturn($random_rfc_3339_string);
    $this->data
      ->getDateTime()
      ->willReturn($drupal_date_time->reveal());
    $normalized = $this->normalizer
      ->normalize($this->data
      ->reveal());
    $this->assertSame($random_rfc_3339_string, $normalized);
  }
  
  /**
   * Tests the denormalize function with good data.
   *
   * @covers ::denormalize
   * @dataProvider providerTestDenormalizeValidFormats
   */
  public function testDenormalizeValidFormats($normalized, $expected) {
    $denormalized = $this->normalizer
      ->denormalize($normalized, Timestamp::class, NULL, []);
    $this->assertSame($expected, $denormalized);
  }
  
  /**
   * Data provider for testDenormalizeValidFormats.
   *
   * @return array
   */
  public function providerTestDenormalizeValidFormats() {
    $expected_stamp = 1478422920;
    $data = [];
    $data['U'] = [
      $expected_stamp,
      $expected_stamp,
    ];
    $data['RFC3339'] = [
      '2016-11-06T09:02:00+00:00',
      $expected_stamp,
    ];
    $data['RFC3339 +0100'] = [
      '2016-11-06T09:02:00+01:00',
      $expected_stamp - 1 * 3600,
    ];
    $data['RFC3339 -0600'] = [
      '2016-11-06T09:02:00-06:00',
      $expected_stamp + 6 * 3600,
    ];
    $data['ISO8601'] = [
      '2016-11-06T09:02:00+0000',
      $expected_stamp,
    ];
    $data['ISO8601 +0100'] = [
      '2016-11-06T09:02:00+0100',
      $expected_stamp - 1 * 3600,
    ];
    $data['ISO8601 -0600'] = [
      '2016-11-06T09:02:00-0600',
      $expected_stamp + 6 * 3600,
    ];
    return $data;
  }
  
  /**
   * Tests the denormalize function with bad data.
   *
   * @covers ::denormalize
   */
  public function testDenormalizeException() {
    $this->expectException(UnexpectedValueException::class);
    $this->expectExceptionMessage('The specified date "2016/11/06 09:02am GMT" is not in an accepted format: "U" (UNIX timestamp), "Y-m-d\\TH:i:sO" (ISO 8601), "Y-m-d\\TH:i:sP" (RFC 3339).');
    $normalized = '2016/11/06 09:02am GMT';
    $this->normalizer
      ->denormalize($normalized, Timestamp::class, NULL, []);
  }

}