Tests required Paragraphs field.
public function testRequiredParagraphsField() {
$this
->loginAsAdmin();
// Add a Paragraph content type and 2 Paragraphs types.
$this
->addParagraphedContentType('paragraphed_test', 'paragraphs', 'entity_reference_paragraphs');
$this
->addParagraphsType('paragraph_type_test');
$this
->addParagraphsType('text');
// Make the paragraphs field required and save configuration.
$this
->drupalGet('admin/structure/types/manage/paragraphed_test/fields/node.paragraphed_test.paragraphs');
$edit = [
'required' => TRUE,
];
$this
->submitForm($edit, 'Save settings');
$this
->assertSession()
->pageTextContains('Saved paragraphs configuration.');
// Assert that the field is displayed in the form as required.
$this
->drupalGet('node/add/paragraphed_test');
$this
->assertSession()
->responseContains('<strong class="form-required" data-drupal-selector="edit-paragraphs-title">');
$edit = [
'title[0][value]' => 'test_title',
];
$this
->submitForm($edit, 'Save');
$this
->assertSession()
->pageTextContains('paragraphs field is required.');
$this
->submitForm([], 'paragraphs_paragraph_type_test_add_more');
$this
->submitForm($edit, 'Save');
$this
->assertSession()
->pageTextContains('paragraphed_test test_title has been created.');
}