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() : void {
        $this->assertTrue($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() : void {
        $this->assertTrue($this->normalizer
            ->supportsDenormalization($this->data
            ->reveal(), Timestamp::class));
    }
    
    /**
     * @covers ::normalize
     */
    public function testNormalize() : void {
        $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) : void {
        $denormalized = $this->normalizer
            ->denormalize($normalized, Timestamp::class, NULL, []);
        $this->assertSame($expected, $denormalized);
    }
    
    /**
     * Data provider for testDenormalizeValidFormats.
     *
     * @return array
     */
    public static 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() : void {
        $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, []);
    }

}