class TypedDataTest

class TypedDataTest extends KernelTestBase {
    
    /**
     * The typed data manager to use.
     *
     * @var \Drupal\Core\TypedData\TypedDataManager
     */
    protected $typedDataManager;
    
    /**
     * {@inheritdoc}
     */
    protected static $modules = [
        'system',
        'field',
        'file',
        'user',
    ];
    
    /**
     * {@inheritdoc}
     */
    protected function setUp() : void {
        parent::setUp();
        $this->installEntitySchema('file');
        $this->typedDataManager = $this->container
            ->get('typed_data_manager');
    }
    
    /**
     * Creates a typed data object and ensures it implements TypedDataInterface.
     *
     * @see \Drupal\Core\TypedData\TypedDataManager::create()
     */
    protected function createTypedData($definition, $value = NULL, $name = NULL) {
        if (is_array($definition)) {
            $definition = DataDefinition::create($definition['type']);
        }
        $data = $this->typedDataManager
            ->create($definition, $value, $name);
        $this->assertInstanceOf(TypedDataInterface::class, $data);
        return $data;
    }
    
    /**
     * Tests the basics around constructing and working with typed data objects.
     */
    public function testGetAndSet() : void {
        // Boolean type.
        $typed_data = $this->createTypedData([
            'type' => 'boolean',
        ], TRUE);
        $this->assertInstanceOf(BooleanInterface::class, $typed_data);
        $this->assertTrue($typed_data->getValue(), 'Boolean value was fetched.');
        $this->assertEquals(0, $typed_data->validate()
            ->count());
        $typed_data->setValue(FALSE);
        $this->assertFalse($typed_data->getValue(), 'Boolean value was changed.');
        $this->assertEquals(0, $typed_data->validate()
            ->count());
        $this->assertIsString($typed_data->getString());
        $typed_data->setValue(NULL);
        $this->assertNull($typed_data->getValue(), 'Boolean wrapper is null-able.');
        $this->assertEquals(0, $typed_data->validate()
            ->count());
        $typed_data->setValue('invalid');
        $this->assertEquals(1, $typed_data->validate()
            ->count(), 'Validation detected invalid value.');
        // String type.
        $value = $this->randomString();
        $typed_data = $this->createTypedData([
            'type' => 'string',
        ], $value);
        $this->assertInstanceOf(StringInterface::class, $typed_data);
        $this->assertSame($value, $typed_data->getValue(), 'String value was fetched.');
        $this->assertEquals(0, $typed_data->validate()
            ->count());
        $new_value = $this->randomString();
        $typed_data->setValue($new_value);
        $this->assertSame($new_value, $typed_data->getValue(), 'String value was changed.');
        $this->assertEquals(0, $typed_data->validate()
            ->count());
        // Funky test.
        $this->assertIsString($typed_data->getString());
        $typed_data->setValue(NULL);
        $this->assertNull($typed_data->getValue(), 'String wrapper is null-able.');
        $this->assertEquals(0, $typed_data->validate()
            ->count());
        $typed_data->setValue([
            'no string',
        ]);
        $this->assertEquals(1, $typed_data->validate()
            ->count(), 'Validation detected invalid value.');
        // Integer type.
        $value = rand();
        $typed_data = $this->createTypedData([
            'type' => 'integer',
        ], $value);
        $this->assertInstanceOf(IntegerInterface::class, $typed_data);
        $this->assertSame($value, $typed_data->getValue(), 'Integer value was fetched.');
        $this->assertEquals(0, $typed_data->validate()
            ->count());
        $new_value = rand();
        $typed_data->setValue($new_value);
        $this->assertSame($new_value, $typed_data->getValue(), 'Integer value was changed.');
        $this->assertIsString($typed_data->getString());
        $this->assertEquals(0, $typed_data->validate()
            ->count());
        $typed_data->setValue(NULL);
        $this->assertNull($typed_data->getValue(), 'Integer wrapper is null-able.');
        $this->assertEquals(0, $typed_data->validate()
            ->count());
        $typed_data->setValue('invalid');
        $this->assertEquals(1, $typed_data->validate()
            ->count(), 'Validation detected invalid value.');
        // Decimal type.
        $value = (string) (mt_rand(1, 10000) / 100);
        $typed_data = $this->createTypedData([
            'type' => 'decimal',
        ], $value);
        $this->assertInstanceOf(DecimalInterface::class, $typed_data);
        $this->assertSame($value, $typed_data->getValue(), 'Decimal value was fetched.');
        $this->assertEquals(0, $typed_data->validate()
            ->count());
        $new_value = (string) (mt_rand(1, 10000) / 100);
        $typed_data->setValue($new_value);
        $this->assertSame($new_value, $typed_data->getValue(), 'Decimal value was changed.');
        $this->assertIsString($typed_data->getString());
        $this->assertEquals(0, $typed_data->validate()
            ->count());
        $typed_data->setValue(NULL);
        $this->assertNull($typed_data->getValue(), 'Decimal wrapper is null-able.');
        $this->assertEquals(0, $typed_data->validate()
            ->count());
        $typed_data->setValue(0);
        $this->assertSame('0.0', $typed_data->getCastedValue(), '0.0 casted value was fetched.');
        $typed_data->setValue('1337e0');
        $this->assertEquals(1, $typed_data->validate()
            ->count(), 'Scientific notation is not allowed in numeric type.');
        $typed_data->setValue('invalid');
        $this->assertEquals(1, $typed_data->validate()
            ->count(), 'Validation detected invalid value.');
        // Float type.
        $value = 123.45;
        $typed_data = $this->createTypedData([
            'type' => 'float',
        ], $value);
        $this->assertInstanceOf(FloatInterface::class, $typed_data);
        $this->assertSame($value, $typed_data->getValue(), 'Float value was fetched.');
        $this->assertEquals(0, $typed_data->validate()
            ->count());
        $new_value = 678.9;
        $typed_data->setValue($new_value);
        $this->assertSame($new_value, $typed_data->getValue(), 'Float value was changed.');
        $this->assertIsString($typed_data->getString());
        $this->assertEquals(0, $typed_data->validate()
            ->count());
        $typed_data->setValue(NULL);
        $this->assertNull($typed_data->getValue(), 'Float wrapper is null-able.');
        $this->assertEquals(0, $typed_data->validate()
            ->count());
        $typed_data->setValue('invalid');
        $this->assertEquals(1, $typed_data->validate()
            ->count(), 'Validation detected invalid value.');
        // Date Time type; values with timezone offset.
        $value = '2014-01-01T20:00:00+00:00';
        $typed_data = $this->createTypedData([
            'type' => 'datetime_iso8601',
        ], $value);
        $this->assertInstanceOf(DateTimeInterface::class, $typed_data);
        $this->assertSame($value, $typed_data->getValue());
        $this->assertEquals($typed_data->getDateTime()
            ->format('c'), $typed_data->getValue(), 'Value representation of a date is ISO 8601');
        $this->assertSame('+00:00', $typed_data->getDateTime()
            ->getTimezone()
            ->getName());
        $this->assertEquals(0, $typed_data->validate()
            ->count());
        $new_value = '2014-01-02T20:00:00+00:00';
        $typed_data->setValue($new_value);
        $this->assertSame($new_value, $typed_data->getDateTime()
            ->format('c'), 'Date value was changed and set by an ISO8601 date.');
        $this->assertEquals(0, $typed_data->validate()
            ->count());
        $this->assertSame('2014-01-02', $typed_data->getDateTime()
            ->format('Y-m-d'), 'Date value was changed and set by date string.');
        $this->assertSame('+00:00', $typed_data->getDateTime()
            ->getTimezone()
            ->getName());
        $this->assertEquals(0, $typed_data->validate()
            ->count());
        $typed_data->setValue(NULL);
        $this->assertNull($typed_data->getDateTime(), 'Date wrapper is null-able.');
        $this->assertEquals(0, $typed_data->validate()
            ->count());
        $typed_data->setValue('invalid');
        $this->assertEquals(1, $typed_data->validate()
            ->count(), 'Validation detected invalid value.');
        // Check implementation of DateTimeInterface.
        $typed_data = $this->createTypedData([
            'type' => 'datetime_iso8601',
        ], '2014-01-01T20:00:00+00:00');
        $this->assertInstanceOf(DrupalDateTime::class, $typed_data->getDateTime());
        $this->assertSame('+00:00', $typed_data->getDateTime()
            ->getTimezone()
            ->getName());
        $typed_data->setDateTime(new DrupalDateTime('2014-01-02T20:00:00+00:00'));
        $this->assertSame('+00:00', $typed_data->getDateTime()
            ->getTimezone()
            ->getName());
        $this->assertEquals('2014-01-02T20:00:00+00:00', $typed_data->getValue());
        $typed_data->setValue(NULL);
        $this->assertNull($typed_data->getDateTime());
        // Date Time type; values without timezone offset.
        $value = '2014-01-01T20:00';
        $typed_data = $this->createTypedData([
            'type' => 'datetime_iso8601',
        ], $value);
        $this->assertInstanceOf(DateTimeInterface::class, $typed_data);
        $this->assertSame($value, $typed_data->getValue(), 'Date value was fetched.');
        // @todo Uncomment this assertion in https://www.drupal.org/project/drupal/issues/2716891.
        // $this->assertEquals($typed_data->getDateTime()->format('c'), $typed_data->getValue(), 'Value representation of a date is ISO 8601');
        $this->assertSame('UTC', $typed_data->getDateTime()
            ->getTimezone()
            ->getName());
        $this->assertEquals(0, $typed_data->validate()
            ->count());
        $new_value = '2014-01-02T20:00';
        $typed_data->setValue($new_value);
        // @todo Uncomment this assertion in https://www.drupal.org/project/drupal/issues/2716891.
        // $this->assertTrue($typed_data->getDateTime()->format('c') === $new_value, 'Date value was changed and set by an ISO8601 date.');
        $this->assertEquals(0, $typed_data->validate()
            ->count());
        $this->assertSame('2014-01-02', $typed_data->getDateTime()
            ->format('Y-m-d'), 'Date value was changed and set by date string.');
        $this->assertSame('UTC', $typed_data->getDateTime()
            ->getTimezone()
            ->getName());
        $this->assertEquals(0, $typed_data->validate()
            ->count());
        $typed_data->setValue(NULL);
        $this->assertNull($typed_data->getDateTime(), 'Date wrapper is null-able.');
        $this->assertEquals(0, $typed_data->validate()
            ->count());
        $typed_data->setValue('invalid');
        $this->assertEquals(1, $typed_data->validate()
            ->count(), 'Validation detected invalid value.');
        // Check implementation of DateTimeInterface.
        $typed_data = $this->createTypedData([
            'type' => 'datetime_iso8601',
        ], '2014-01-01T20:00:00');
        $this->assertInstanceOf(DrupalDateTime::class, $typed_data->getDateTime());
        $this->assertSame('UTC', $typed_data->getDateTime()
            ->getTimezone()
            ->getName());
        // When setting datetime without a timezone offset, the default timezone is
        // used (Australia/Sydney). DateTimeIso8601::setDateTime() converts this
        // DrupalDateTime object to a string using ::format('c'), it gets converted
        // to an offset. The offset for Australia/Sydney is +11:00.
        $typed_data->setDateTime(new DrupalDateTime('2014-01-02T20:00:00'));
        $this->assertSame('+11:00', $typed_data->getDateTime()
            ->getTimezone()
            ->getName());
        $this->assertEquals('2014-01-02T20:00:00+11:00', $typed_data->getValue());
        $typed_data->setValue(NULL);
        $this->assertNull($typed_data->getDateTime());
        // Timestamp type.
        $requestTime = \Drupal::time()->getRequestTime();
        $value = $requestTime;
        $typed_data = $this->createTypedData([
            'type' => 'timestamp',
        ], $value);
        $this->assertInstanceOf(DateTimeInterface::class, $typed_data);
        $this->assertSame($typed_data->getValue(), $value, 'Timestamp value was fetched.');
        $this->assertEquals(0, $typed_data->validate()
            ->count());
        $new_value = $requestTime + 1;
        $typed_data->setValue($new_value);
        $this->assertSame($typed_data->getValue(), $new_value, 'Timestamp value was changed and set.');
        $this->assertEquals(0, $typed_data->validate()
            ->count());
        $typed_data->setValue(NULL);
        $this->assertNull($typed_data->getDateTime(), 'Timestamp wrapper is null-able.');
        $this->assertEquals(0, $typed_data->validate()
            ->count());
        $typed_data->setValue('invalid');
        $this->assertEquals(1, $typed_data->validate()
            ->count(), 'Validation detected invalid value.');
        // Check implementation of DateTimeInterface.
        $typed_data = $this->createTypedData([
            'type' => 'timestamp',
        ], $requestTime);
        $this->assertInstanceOf(DrupalDateTime::class, $typed_data->getDateTime());
        $typed_data->setDateTime(DrupalDateTime::createFromTimestamp($requestTime + 1));
        $this->assertEquals($requestTime + 1, $typed_data->getValue());
        $typed_data->setValue(NULL);
        $this->assertNull($typed_data->getDateTime());
        // DurationIso8601 type.
        $value = 'PT20S';
        $typed_data = $this->createTypedData([
            'type' => 'duration_iso8601',
        ], $value);
        $this->assertInstanceOf(DurationInterface::class, $typed_data);
        $this->assertSame($value, $typed_data->getValue(), 'DurationIso8601 value was fetched.');
        $this->assertEquals(0, $typed_data->validate()
            ->count());
        $typed_data->setValue('P40D');
        $this->assertEquals(40, $typed_data->getDuration()->d, 'DurationIso8601 value was changed and set by duration string.');
        $this->assertIsString($typed_data->getString());
        $this->assertEquals(0, $typed_data->validate()
            ->count());
        $typed_data->setValue(NULL);
        $this->assertNull($typed_data->getValue(), 'DurationIso8601 wrapper is null-able.');
        $this->assertEquals(0, $typed_data->validate()
            ->count());
        $typed_data->setValue('invalid');
        $this->assertEquals(1, $typed_data->validate()
            ->count(), 'Validation detected invalid value.');
        // Check implementation of DurationInterface.
        $typed_data = $this->createTypedData([
            'type' => 'duration_iso8601',
        ], 'PT20S');
        $this->assertInstanceOf(\DateInterval::class, $typed_data->getDuration());
        $typed_data->setDuration(new \DateInterval('P40D'));
        // @todo Should we make this "nicer"?
        $this->assertEquals('P0Y0M40DT0H0M0S', $typed_data->getValue());
        $typed_data->setValue(NULL);
        $this->assertNull($typed_data->getDuration());
        // Time span type.
        $value = 20;
        $typed_data = $this->createTypedData([
            'type' => 'timespan',
        ], $value);
        $this->assertInstanceOf(DurationInterface::class, $typed_data);
        $this->assertSame($value, $typed_data->getValue(), 'Time span value was fetched.');
        $this->assertEquals(0, $typed_data->validate()
            ->count());
        $typed_data->setValue(60 * 60 * 4);
        $this->assertEquals(14400, $typed_data->getDuration()->s, 'Time span was changed');
        $this->assertIsString($typed_data->getString());
        $this->assertEquals(0, $typed_data->validate()
            ->count());
        $typed_data->setValue(NULL);
        $this->assertNull($typed_data->getValue(), 'Time span wrapper is null-able.');
        $this->assertEquals(0, $typed_data->validate()
            ->count());
        $typed_data->setValue('invalid');
        $this->assertEquals(1, $typed_data->validate()
            ->count(), 'Validation detected invalid value.');
        // Check implementation of DurationInterface.
        $typed_data = $this->createTypedData([
            'type' => 'timespan',
        ], 20);
        $this->assertInstanceOf(\DateInterval::class, $typed_data->getDuration());
        $typed_data->setDuration(new \DateInterval('PT4H'));
        $this->assertEquals(60 * 60 * 4, $typed_data->getValue());
        $typed_data->setValue(NULL);
        $this->assertNull($typed_data->getDuration());
        // URI type.
        $uri = 'http://example.com/foo/';
        $typed_data = $this->createTypedData([
            'type' => 'uri',
        ], $uri);
        $this->assertInstanceOf(UriInterface::class, $typed_data);
        $this->assertSame($uri, $typed_data->getValue(), 'URI value was fetched.');
        $this->assertEquals(0, $typed_data->validate()
            ->count());
        $typed_data->setValue($uri . 'bar.txt');
        $this->assertSame($uri . 'bar.txt', $typed_data->getValue(), 'URI value was changed.');
        $this->assertIsString($typed_data->getString());
        $this->assertEquals(0, $typed_data->validate()
            ->count());
        $typed_data->setValue(NULL);
        $this->assertNull($typed_data->getValue(), 'URI wrapper is null-able.');
        $this->assertEquals(0, $typed_data->validate()
            ->count());
        $typed_data->setValue('invalid');
        $this->assertEquals(1, $typed_data->validate()
            ->count(), 'Validation detected invalid value.');
        $typed_data->setValue('public://field/image/Photo on 4-28-14 at 12.01 PM.jpg');
        $this->assertEquals(0, $typed_data->validate()
            ->count(), 'Filename with spaces is valid.');
        // Generate some files that will be used to test the binary data type.
        $files = [];
        for ($i = 0; $i < 3; $i++) {
            $path = "public://example_{$i}.png";
            \Drupal::service('file_system')->copy($this->root . '/core/misc/druplicon.png', $path);
            $image = File::create([
                'uri' => $path,
            ]);
            $image->save();
            $files[] = $image;
        }
        // Email type.
        $value = $this->randomString();
        $typed_data = $this->createTypedData([
            'type' => 'email',
        ], $value);
        $this->assertInstanceOf(StringInterface::class, $typed_data);
        $this->assertSame($value, $typed_data->getValue(), 'Email value was fetched.');
        $new_value = 'test@example.com';
        $typed_data->setValue($new_value);
        $this->assertSame($new_value, $typed_data->getValue(), 'Email value was changed.');
        $this->assertIsString($typed_data->getString());
        $this->assertEquals(0, $typed_data->validate()
            ->count());
        $typed_data->setValue(NULL);
        $this->assertNull($typed_data->getValue(), 'Email wrapper is null-able.');
        $this->assertEquals(0, $typed_data->validate()
            ->count());
        $typed_data->setValue('invalidAtExample.com');
        $this->assertEquals(1, $typed_data->validate()
            ->count(), 'Validation detected invalid value.');
        // Binary type.
        $typed_data = $this->createTypedData([
            'type' => 'binary',
        ], $files[0]->getFileUri());
        $this->assertInstanceOf(BinaryInterface::class, $typed_data);
        $this->assertIsResource($typed_data->getValue());
        $this->assertEquals(0, $typed_data->validate()
            ->count());
        // Try setting by URI.
        $typed_data->setValue($files[1]->getFileUri());
        $this->assertEquals(fgets(fopen($files[1]->getFileUri(), 'r')), fgets($typed_data->getValue()), 'Binary value was changed.');
        $this->assertIsString($typed_data->getString());
        $this->assertEquals(0, $typed_data->validate()
            ->count());
        // Try setting by resource.
        $typed_data->setValue(fopen($files[2]->getFileUri(), 'r'));
        $this->assertEquals(fgets($typed_data->getValue()), fgets(fopen($files[2]->getFileUri(), 'r')), 'Binary value was changed.');
        $this->assertIsString($typed_data->getString());
        $this->assertEquals(0, $typed_data->validate()
            ->count());
        $typed_data->setValue(NULL);
        $this->assertNull($typed_data->getValue(), 'Binary wrapper is null-able.');
        $this->assertEquals(0, $typed_data->validate()
            ->count());
        $typed_data->setValue('invalid');
        $this->assertEquals(1, $typed_data->validate()
            ->count(), 'Validation detected invalid value.');
        // Any type.
        $value = [
            'foo',
        ];
        $typed_data = $this->createTypedData([
            'type' => 'any',
        ], $value);
        $this->assertSame($value, $typed_data->getValue(), 'Any value was fetched.');
        $new_value = 'test@example.com';
        $typed_data->setValue($new_value);
        $this->assertSame($new_value, $typed_data->getValue(), 'Any value was changed.');
        $this->assertIsString($typed_data->getString());
        $this->assertEquals(0, $typed_data->validate()
            ->count());
        $typed_data->setValue(NULL);
        $this->assertNull($typed_data->getValue(), 'Any wrapper is null-able.');
        $this->assertEquals(0, $typed_data->validate()
            ->count());
        // We cannot test invalid values as everything is valid for the any type,
        // but make sure an array or object value passes validation also.
        $typed_data->setValue([
            'entry',
        ]);
        $this->assertEquals(0, $typed_data->validate()
            ->count());
        $typed_data->setValue((object) [
            'entry',
        ]);
        $this->assertEquals(0, $typed_data->validate()
            ->count());
    }
    
    /**
     * Tests using typed data lists.
     */
    public function testTypedDataLists() : void {
        // Test working with an existing list of strings.
        $value = [
            'one',
            'two',
            'three',
        ];
        $typed_data = $this->createTypedData(ListDataDefinition::create('string'), $value);
        $this->assertEquals($value, $typed_data->getValue(), 'List value has been set.');
        // Test iterating.
        $count = 0;
        foreach ($typed_data as $item) {
            $this->assertInstanceOf(TypedDataInterface::class, $item);
            $count++;
        }
        $this->assertEquals(3, $count);
        // Test getting the string representation.
        $this->assertEquals('one, two, three', $typed_data->getString());
        $typed_data[1] = '';
        $this->assertEquals('one, three', $typed_data->getString());
        // Test using array access.
        $this->assertEquals('one', $typed_data[0]->getValue());
        $typed_data[] = 'four';
        $this->assertEquals('four', $typed_data[3]->getValue());
        $this->assertEquals(4, $typed_data->count());
        $this->assertTrue(isset($typed_data[0]));
        $this->assertTrue(!isset($typed_data[6]));
        // Test isEmpty and cloning.
        $this->assertFalse($typed_data->isEmpty());
        $clone = clone $typed_data;
        $this->assertSame($typed_data->getValue(), $clone->getValue());
        $this->assertNotSame($typed_data[0], $clone[0]);
        $clone->setValue([]);
        $this->assertTrue($clone->isEmpty());
        // Make sure that resetting the value using NULL results in an empty array.
        $clone->setValue([]);
        $typed_data->setValue(NULL);
        $this->assertSame([], $typed_data->getValue());
        $this->assertSame([], $clone->getValue());
        // Test dealing with NULL items.
        $typed_data[] = NULL;
        $this->assertTrue($typed_data->isEmpty());
        $this->assertCount(1, $typed_data);
        $typed_data[] = '';
        $this->assertFalse($typed_data->isEmpty());
        $this->assertCount(2, $typed_data);
        $typed_data[] = 'three';
        $this->assertFalse($typed_data->isEmpty());
        $this->assertCount(3, $typed_data);
        $this->assertEquals([
            NULL,
            '',
            'three',
        ], $typed_data->getValue());
        // Test unsetting.
        unset($typed_data[1]);
        $this->assertCount(2, $typed_data);
        // Check that items were shifted.
        $this->assertEquals('three', $typed_data[1]->getValue());
        // Getting a not set list item returns NULL, and does not create a new item.
        $this->assertNull($typed_data[2]);
        $this->assertCount(2, $typed_data);
        // Test setting the list with less values.
        $typed_data->setValue([
            'one',
        ]);
        $this->assertEquals(1, $typed_data->count());
        // Test setting invalid values.
        try {
            $typed_data->setValue('string');
            $this->fail('No exception has been thrown when setting an invalid value.');
        } catch (\Exception) {
            // Expected exception; just continue testing.
        }
    }
    
    /**
     * Tests the filter() method on typed data lists.
     */
    public function testTypedDataListsFilter() : void {
        // Check that an all-pass filter leaves the list untouched.
        $value = [
            'zero',
            'one',
        ];
        $typed_data = $this->createTypedData(ListDataDefinition::create('string'), $value);
        $typed_data->filter(function (TypedDataInterface $item) {
            return TRUE;
        });
        $this->assertEquals(2, $typed_data->count());
        $this->assertEquals('zero', $typed_data[0]->getValue());
        $this->assertEquals(0, $typed_data[0]->getName());
        $this->assertEquals('one', $typed_data[1]->getValue());
        $this->assertEquals(1, $typed_data[1]->getName());
        // Check that a none-pass filter empties the list.
        $value = [
            'zero',
            'one',
        ];
        $typed_data = $this->createTypedData(ListDataDefinition::create('string'), $value);
        $typed_data->filter(function (TypedDataInterface $item) {
            return FALSE;
        });
        $this->assertEquals(0, $typed_data->count());
        // Check that filtering correctly renumbers elements.
        $value = [
            'zero',
            'one',
            'two',
        ];
        $typed_data = $this->createTypedData(ListDataDefinition::create('string'), $value);
        $typed_data->filter(function (TypedDataInterface $item) {
            return $item->getValue() !== 'one';
        });
        $this->assertEquals(2, $typed_data->count());
        $this->assertEquals('zero', $typed_data[0]->getValue());
        $this->assertEquals(0, $typed_data[0]->getName());
        $this->assertEquals('two', $typed_data[1]->getValue());
        $this->assertEquals(1, $typed_data[1]->getName());
    }
    
    /**
     * Tests using a typed data map.
     */
    public function testTypedDataMaps() : void {
        // Test working with a simple map.
        $value = [
            'one' => 'eins',
            'two' => 'beta',
            'three' => 'gamma',
        ];
        $definition = MapDataDefinition::create()->setPropertyDefinition('one', DataDefinition::create('string'))
            ->setPropertyDefinition('two', DataDefinition::create('string'))
            ->setPropertyDefinition('three', DataDefinition::create('string'));
        $typed_data = $this->createTypedData($definition, $value);
        // Test iterating.
        $count = 0;
        foreach ($typed_data as $item) {
            $this->assertInstanceOf(TypedDataInterface::class, $item);
            $count++;
        }
        $this->assertEquals(3, $count);
        // Test retrieving metadata.
        $this->assertEquals(array_keys($value), array_keys($typed_data->getDataDefinition()
            ->getPropertyDefinitions()));
        $definition = $typed_data->getDataDefinition()
            ->getPropertyDefinition('one');
        $this->assertEquals('string', $definition->getDataType());
        $this->assertNull($typed_data->getDataDefinition()
            ->getPropertyDefinition('invalid'));
        // Test getting and setting properties.
        $this->assertEquals('eins', $typed_data->get('one')
            ->getValue());
        $this->assertEquals($value, $typed_data->toArray());
        $typed_data->set('one', 'alpha');
        $this->assertEquals('alpha', $typed_data->get('one')
            ->getValue());
        // Make sure the update is reflected in the value of the map also.
        $value = $typed_data->getValue();
        $this->assertEquals([
            'one' => 'alpha',
            'two' => 'beta',
            'three' => 'gamma',
        ], $value);
        $properties = $typed_data->getProperties();
        $this->assertEquals(array_keys($value), array_keys($properties));
        $this->assertSame($typed_data->get('one'), $properties['one'], 'Properties are identical.');
        // Test setting a not defined property. It shouldn't show up in the
        // properties, but be kept in the values.
        $typed_data->setValue([
            'foo' => 'bar',
        ]);
        $this->assertEquals([
            'one',
            'two',
            'three',
        ], array_keys($typed_data->getProperties()));
        $this->assertEquals([
            'foo',
            'one',
            'two',
            'three',
        ], array_keys($typed_data->getValue()));
        // Test getting the string representation.
        $typed_data->setValue([
            'one' => 'eins',
            'two' => '',
            'three' => 'gamma',
        ]);
        $this->assertEquals('eins, gamma', $typed_data->getString());
        // Test isEmpty and cloning.
        $this->assertFalse($typed_data->isEmpty());
        $clone = clone $typed_data;
        $this->assertSame($typed_data->getValue(), $clone->getValue());
        $this->assertNotSame($typed_data->get('one'), $clone->get('one'));
        $clone->setValue([]);
        $this->assertTrue($clone->isEmpty());
        // Make sure the difference between NULL (not set) and an empty array is
        // kept.
        $typed_data->setValue(NULL);
        $this->assertNull($typed_data->getValue());
        $typed_data->setValue([]);
        $value = $typed_data->getValue();
        $this->assertIsArray($value);
        // Test accessing invalid properties.
        $typed_data->setValue($value);
        try {
            $typed_data->get('invalid');
            $this->fail('No exception has been thrown when getting an invalid value.');
        } catch (\Exception) {
            // Expected exception; just continue testing.
        }
        // Test setting invalid values.
        try {
            $typed_data->setValue('invalid');
            $this->fail('No exception has been thrown when setting an invalid value.');
        } catch (\Exception) {
            // Expected exception; just continue testing.
        }
        // Test adding a new property to the map.
        $typed_data->getDataDefinition()
            ->setPropertyDefinition('zero', DataDefinition::create('any'));
        $typed_data->set('zero', 'null');
        $this->assertEquals('null', $typed_data->get('zero')
            ->getValue());
        $definition = $typed_data->get('zero')
            ->getDataDefinition();
        $this->assertEquals('any', $definition->getDataType(), 'Definition for a new map entry returned.');
    }
    
    /**
     * Tests typed data validation.
     */
    public function testTypedDataValidation() : void {
        $definition = DataDefinition::create('integer')->setConstraints([
            'Range' => [
                'min' => 5,
            ],
        ]);
        $violations = $this->typedDataManager
            ->create($definition, 10)
            ->validate();
        $this->assertEquals(0, $violations->count());
        $integer = $this->typedDataManager
            ->create($definition, 1);
        $violations = $integer->validate();
        $this->assertEquals(1, $violations->count());
        // Test translating violation messages.
        $message = t('This value should be %limit or more.', [
            '%limit' => 5,
        ]);
        $this->assertEquals($message, $violations[0]->getMessage(), 'Translated violation message retrieved.');
        $this->assertEquals('', $violations[0]->getPropertyPath());
        $this->assertSame($integer, $violations[0]->getRoot(), 'Root object returned.');
        // Test translating violation messages when pluralization is used.
        $definition = DataDefinition::create('string')->setConstraints([
            'Length' => [
                'min' => 10,
            ],
        ]);
        $violations = $this->typedDataManager
            ->create($definition, "short")
            ->validate();
        $this->assertEquals(1, $violations->count());
        $message = t('This value is too short. It should have %limit characters or more.', [
            '%limit' => 10,
        ]);
        $this->assertEquals($message, $violations[0]->getMessage(), 'Translated violation message retrieved.');
        // Test having multiple violations.
        $definition = DataDefinition::create('integer')->setConstraints([
            'Range' => [
                'min' => 5,
            ],
            'Null' => [],
        ]);
        $violations = $this->typedDataManager
            ->create($definition, 10)
            ->validate();
        $this->assertEquals(1, $violations->count());
        $violations = $this->typedDataManager
            ->create($definition, 1)
            ->validate();
        $this->assertEquals(2, $violations->count());
        // Test validating property containers and make sure the NotNull and Null
        // constraints work with typed data containers.
        $definition = BaseFieldDefinition::create('integer')->setConstraints([
            'NotNull' => [],
        ]);
        $field_item = $this->typedDataManager
            ->create($definition, [
            'value' => 10,
        ]);
        $violations = $field_item->validate();
        $this->assertEquals(0, $violations->count());
        $field_item = $this->typedDataManager
            ->create($definition, [
            'value' => 'no integer',
        ]);
        $violations = $field_item->validate();
        $this->assertEquals(1, $violations->count());
        $this->assertEquals('0.value', $violations[0]->getPropertyPath());
        // Test that the field item may not be empty.
        $field_item = $this->typedDataManager
            ->create($definition);
        $violations = $field_item->validate();
        $this->assertEquals(1, $violations->count());
        // Test the Null constraint with typed data containers.
        $definition = BaseFieldDefinition::create('float')->setConstraints([
            'Null' => [],
        ]);
        $field_item = $this->typedDataManager
            ->create($definition, [
            'value' => 11.5,
        ]);
        $violations = $field_item->validate();
        $this->assertEquals(1, $violations->count());
        $field_item = $this->typedDataManager
            ->create($definition);
        $violations = $field_item->validate();
        $this->assertEquals(0, $violations->count());
        // Test getting constraint definitions by type.
        $definitions = $this->typedDataManager
            ->getValidationConstraintManager()
            ->getDefinitionsByType('entity');
        $this->assertTrue(isset($definitions['EntityType']), 'Constraint plugin found for type entity.');
        $this->assertTrue(isset($definitions['Null']), 'Constraint plugin found for type entity.');
        $this->assertTrue(isset($definitions['NotNull']), 'Constraint plugin found for type entity.');
        $definitions = $this->typedDataManager
            ->getValidationConstraintManager()
            ->getDefinitionsByType('string');
        $this->assertFalse(isset($definitions['EntityType']), 'Constraint plugin not found for type string.');
        $this->assertTrue(isset($definitions['Null']), 'Constraint plugin found for type string.');
        $this->assertTrue(isset($definitions['NotNull']), 'Constraint plugin found for type string.');
        // Test automatic 'required' validation.
        $definition = DataDefinition::create('integer')->setRequired(TRUE);
        $violations = $this->typedDataManager
            ->create($definition)
            ->validate();
        $this->assertEquals(1, $violations->count());
        $violations = $this->typedDataManager
            ->create($definition, 0)
            ->validate();
        $this->assertEquals(0, $violations->count());
        // Test validating a list of a values and make sure property paths starting
        // with "0" are created.
        $definition = BaseFieldDefinition::create('integer');
        $violations = $this->typedDataManager
            ->create($definition, [
            [
                'value' => 10,
            ],
        ])
            ->validate();
        $this->assertEquals(0, $violations->count());
        $violations = $this->typedDataManager
            ->create($definition, [
            [
                'value' => 'string',
            ],
        ])
            ->validate();
        $this->assertEquals(1, $violations->count());
        $this->assertEquals('string', $violations[0]->getInvalidValue());
        $this->assertSame('0.value', $violations[0]->getPropertyPath());
    }
    
    /**
     * Tests the last() method on typed data lists.
     */
    public function testTypedDataListsLast() : void {
        // Create an ItemList with two string items.
        $value = [
            'zero',
            'one',
        ];
        $typed_data = $this->createTypedData(ListDataDefinition::create('string'), $value);
        // Assert that the last item is the second one ('one').
        $this->assertEquals('one', $typed_data->last()
            ->getValue());
        // Add another item to the list and check the last item.
        $value[] = 'two';
        $typed_data = $this->createTypedData(ListDataDefinition::create('string'), $value);
        $this->assertEquals('two', $typed_data->last()
            ->getValue());
        // Check behavior with an empty list.
        $typed_data = $this->createTypedData(ListDataDefinition::create('string'), []);
        $this->assertNull($typed_data->last(), 'Empty list should return NULL.');
    }

}