function TypedDataTest::testTypedDataListsFilter

Tests the filter() method on typed data lists.

File

core/tests/Drupal/KernelTests/Core/TypedData/TypedDataTest.php, line 466

Class

TypedDataTest

Tests the functionality of all core data types.

Namespace

Code

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());
}