trait ContextTestTrait in Feeds extensible parsers 8

trait ContextTestTrait {

  /**
   * Tests setting a context on the mapping form.
   *
   * @covers ::mappingFormAlter
   * @covers ::mappingFormValidate
   * @covers ::mappingFormSubmit
   *
   * @dataProvider dataProviderValidContext
   */
  public function testSetContext($context, $expected_context = NULL) {
    if (is_null($expected_context)) {
      $expected_context = $context;
    }
    $edit = [
      'context' => $context,
    ];
    $this
      ->drupalPostForm('/admin/structure/feeds/manage/' . $this->feedType
      ->id() . '/mapping', $edit, 'Save');

    // Assert that the context was saved for the XML parser.
    $feed_type = $this
      ->reloadEntity($this->feedType);
    $config = $feed_type
      ->getParser()
      ->getConfiguration();
    $this
      ->assertEquals($expected_context, $config['context']['value']);
  }

  /**
   * Data provider for testSetContext().
   */
  public abstract function dataProviderValidContext();

  /**
   * Tests setting an invalid context on the mapping form.
   *
   * @covers ::mappingFormAlter
   * @covers ::mappingFormValidate
   *
   * @dataProvider dataProviderInvalidContext
   */
  public function testSetInvalidContext($context, $expected_error, $expected_context = '') {
    $edit = [
      'context' => $context,
    ];
    $this
      ->drupalPostForm('/admin/structure/feeds/manage/' . $this->feedType
      ->id() . '/mapping', $edit, 'Save');
    $this
      ->assertText($expected_error);

    // Assert that the context was *not* saved for the parser.
    $feed_type = $this
      ->reloadEntity($this->feedType);
    $config = $feed_type
      ->getParser()
      ->getConfiguration();
    $this
      ->assertEquals($expected_context, $config['context']['value']);
  }

  /**
   * Data provider for testSetInvalidContext().
   */
  public abstract function dataProviderInvalidContext();

  /**
   * Does a basic mapping test.
   */
  public function testMapping() {

    // First, set context.
    $data = $this
      ->dataProviderValidContext();
    $contexts = reset($data);
    $context = reset($contexts);
    $edit = [
      'context' => $context,
    ];
    $this
      ->drupalPostForm('/admin/structure/feeds/manage/' . $this->feedType
      ->id() . '/mapping', $edit, 'Save');

    // Now set mapping.
    $this
      ->doMappingTest();
  }

}