Behat Tests for Drupal Paragraphs

FeatureContext.php

<?php

use Drupal\DrupalExtension\Context\RawDrupalContext;
use Behat\Behat\Context\SnippetAcceptingContext;
use Behat\Gherkin\Node\PyStringNode;
use Behat\Gherkin\Node\TableNode;
use Behat\Mink\Exception\ElementNotFoundException;
use Behat\Mink\Exception\ExpectationException;
use Behat\Behat\Event\StepEvent;

/**
 * Defines application features from the specific context.
 */
class FeatureContext extends RawDrupalContext implements SnippetAcceptingContext
{

  /**
   * Initializes context.
   *
   * Every scenario gets its own context instance.
   * You can also pass arbitrary arguments to the
   * context constructor through behat.yml.
   */
  public function __construct()
  {
  }

  /**
   * @Then /^the "([^"]*)" entity type "([^"]*)" should have field "([^"]*)" of type "([^"]*)"$/
   */
  public function assertFieldNameAndType($entity_type, $bundle, $field_name, $type)
  {
    if (!$field = field_info_field($field_name)) {
      throw new ExpectationException('Field does not exist.', $this->getSession());
    }

    if (!$instance = field_info_instance($entity_type, $field_name, $bundle)) {
      throw new ExpectationException('Field not found on node type.', $this->getSession());
    }

    if ($field['type'] != $type) {
      throw new ExpectationException("Field is type {$field['type']}.", $this->getSession());
    }
  }

}

video.feature

Feature: Add video component
  In order to share videos on content
  As a super user or basic author I should be able to add a video component to an article

  @api
  Scenario Outline: A super user or basic author should be able to add videos
    Given I am logged in as a user with the "<role>" role
    When I go to "node/add/article"
    Then I should see "Add Video"
    Examples:
      | role                  |
      | Super User            |
      | Basic Author          |

  @api
  Scenario: A video component should allow you to add a video, headline, and caption
    Then the "paragraphs_item" entity type "video" should have field "field_video" of type "file"
    Then the "paragraphs_item" entity type "video" should have field "field_image_headline" of type "text"
    Then the "paragraphs_item" entity type "video" should have field "field_caption" of type "text_long"