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() {
        $this->assertTrue($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() {
        $this->assertTrue($this->normalizer
            ->supportsDenormalization($this->data
            ->reveal(), DateTimeIso8601::class));
    }
    
    /**
     * @covers ::normalize
     * @dataProvider providerTestNormalize
     */
    public function testNormalize($parent_field_item_class, $datetime_type, $expected_format) {
        $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) {
        $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 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) {
        $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 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() {
        $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() {
        $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() {
        $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, []);
    }

}