function TypedDataTest::testTypedDataListsFilter

Tests the filter() method on typed data lists.

File

core/tests/Drupal/KernelTests/Core/TypedData/TypedDataTest.php, line 438

Class

TypedDataTest

Tests the functionality of all core data types.

Namespace

Code

public function testTypedDataListsFilter() {
  // 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;
  });
  $this->assertEqual($typed_data->count(), 2);
  $this->assertEqual($typed_data[0]->getValue(), 'zero');
  $this->assertEqual($typed_data[0]->getName(), 0);
  $this->assertEqual($typed_data[1]->getValue(), 'one');
  $this->assertEqual($typed_data[1]->getName(), 1);
  // 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;
  });
  $this->assertEqual($typed_data->count(), 0);
  // 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';
  });
  $this->assertEqual($typed_data->count(), 2);
  $this->assertEqual($typed_data[0]->getValue(), 'zero');
  $this->assertEqual($typed_data[0]->getName(), 0);
  $this->assertEqual($typed_data[1]->getValue(), 'two');
  $this->assertEqual($typed_data[1]->getName(), 1);
}