function FormTest::testFieldFormDefaultValue
Tests field widget default values on entity forms.
File
- 
              core/
modules/ field/ tests/ src/ Functional/ FormTest.php, line 193  
Class
- FormTest
 - Tests field form handling.
 
Namespace
Drupal\Tests\field\FunctionalCode
public function testFieldFormDefaultValue() {
  $field_storage = $this->fieldStorageSingle;
  $field_name = $field_storage['field_name'];
  $this->field['field_name'] = $field_name;
  $default = rand(1, 127);
  $this->field['default_value'] = [
    [
      'value' => $default,
    ],
  ];
  FieldStorageConfig::create($field_storage)->save();
  FieldConfig::create($this->field)
    ->save();
  \Drupal::service('entity_display.repository')->getFormDisplay($this->field['entity_type'], $this->field['bundle'])
    ->setComponent($field_name)
    ->save();
  // Display creation form.
  $this->drupalGet('entity_test/add');
  // Test that the default value is displayed correctly.
  $this->assertSession()
    ->fieldValueEquals("{$field_name}[0][value]", $default);
  // Try to submit an empty value.
  $edit = [
    "{$field_name}[0][value]" => '',
  ];
  $this->submitForm($edit, 'Save');
  preg_match('|entity_test/manage/(\\d+)|', $this->getUrl(), $match);
  $id = $match[1];
  $this->assertSession()
    ->pageTextContains('entity_test ' . $id . ' has been created.');
  $entity = EntityTest::load($id);
  $this->assertTrue($entity->{$field_name}
    ->isEmpty(), 'Field is now empty.');
}
Buggy or inaccurate documentation? Please file an issue. Need support? Need help programming? Connect with the Drupal community.