--- /dev/null
+<?php
+
+namespace Drupal\paragraphs\Tests\Experimental;
+
+use Drupal\field_ui\Tests\FieldUiTestTrait;
+
+/**
+ * Tests the paragraphs summary formatter.
+ *
+ * @group paragraphs
+ */
+class ParagraphsExperimentalSummaryFormatterTest extends ParagraphsExperimentalTestBase {
+
+ use FieldUiTestTrait;
+
+ /**
+ * Modules to enable.
+ *
+ * @var array
+ */
+ public static $modules = [
+ 'image',
+ ];
+
+ /**
+ * Tests the paragraphs summary formatter.
+ */
+ public function testParagraphsSummaryFormatter() {
+ $this->addParagraphedContentType('paragraphed_test');
+ $this->loginAsAdmin(['create paragraphed_test content', 'edit any paragraphed_test content', 'administer node display']);
+
+ // Add a Paragraph type.
+ $paragraph_type = 'text_paragraph';
+ $this->addParagraphsType($paragraph_type);
+ $title_paragraphs_type = 'title';
+ $this->addParagraphsType($title_paragraphs_type);
+ static::fieldUIAddNewField('admin/structure/paragraphs_type/' . $paragraph_type, 'text', 'Text', 'text_long', [], []);
+ static::fieldUIAddNewField('admin/structure/paragraphs_type/' . $title_paragraphs_type, 'title', 'Title', 'string', [], []);
+
+ // Add a user Paragraph Type
+ $paragraph_type = 'user_paragraph';
+ $this->addParagraphsType($paragraph_type);
+ static::fieldUIAddNewField('admin/structure/paragraphs_type/' . $paragraph_type, 'user', 'User', 'entity_reference', ['settings[target_type]' => 'user'], []);
+
+ // Set display format to paragraphs summary.
+ $this->drupalGet('admin/structure/types/manage/paragraphed_test/display');
+ $edit = ['fields[field_paragraphs][type]' => 'paragraph_summary'];
+ $this->drupalPostForm(NULL, $edit, t('Save'));
+ // Add a paragraph.
+ $this->drupalPostAjaxForm('node/add/paragraphed_test', [], 'field_paragraphs_text_paragraph_add_more');
+ $this->drupalPostAjaxForm(NULL, NULL, 'field_paragraphs_title_add_more');
+
+ // Create a node with a text.
+ $edit = [
+ 'title[0][value]' => 'Test article',
+ 'field_paragraphs[0][subform][field_text][0][value]' => 'text_summary',
+ 'field_paragraphs[1][subform][field_title][0][value]' => 'Title example',
+ ];
+ $this->drupalPostForm(NULL, $edit, t('Save'));
+ $this->clickLink(t('Edit'));
+ $this->drupalPostForm(NULL, [], t('Add user_paragraph'));
+ $edit = [
+ 'field_paragraphs[2][subform][field_user][0][target_id]' => $this->admin_user->label() . ' (' . $this->admin_user->id() . ')',
+ ];
+ $this->drupalPostForm(NULL, $edit, t('Save'));
+
+ // Assert the summary is correctly generated.
+ $this->assertText($this->admin_user->label());
+ $this->assertText('Title example');
+ }
+
+}