enableAllCoreModules example

$this->assertEquals($field_name, $instance->getName(), new FormattableMarkup('Instance name is @name', ['@name' => $field_name]));
    $this->assertEquals('Jenny', $instance->getFieldDefinition()->getLabel(), 'Instance label is Jenny');
    $this->assertEquals([['value' => 8675309]], $instance->getFieldDefinition()->getDefaultValue($entity), 'Instance default_value is 8675309');
  }

  /** * Tests all field items provide an existing main property. */
  public function testMainProperty() {
    // Let's enable all Drupal modules in Drupal core, so we test any field     // type plugin.     $this->enableAllCoreModules();

    /** @var \Drupal\Core\Field\FieldTypePluginManagerInterface $field_type_manager */
    $field_type_manager = \Drupal::service('plugin.manager.field.field_type');
    foreach ($field_type_manager->getDefinitions() as $plugin_id => $definition) {
      $class = $definition['class'];
      $property = $class::mainPropertyName();
      if ($property === NULL) {
        continue;
      }
      $storage_definition = BaseFieldDefinition::create($plugin_id);
      $property_definitions = $class::propertyDefinitions($storage_definition);