--- /dev/null
+<?php
+
+namespace Drupal\field\Tests\String;
+
+use Drupal\Component\Utility\Unicode;
+use Drupal\entity_test\Entity\EntityTest;
+use Drupal\field\Entity\FieldConfig;
+use Drupal\simpletest\WebTestBase;
+use Drupal\field\Entity\FieldStorageConfig;
+
+/**
+ * Tests the creation of string fields.
+ *
+ * @group text
+ */
+class StringFieldTest extends WebTestBase {
+
+ /**
+ * Modules to enable.
+ *
+ * @var array
+ */
+ public static $modules = ['entity_test', 'file'];
+
+ /**
+ * A user without any special permissions.
+ *
+ * @var \Drupal\user\UserInterface
+ */
+ protected $webUser;
+
+ protected function setUp() {
+ parent::setUp();
+
+ $this->webUser = $this->drupalCreateUser(['view test entity', 'administer entity_test content']);
+ $this->drupalLogin($this->webUser);
+ }
+
+ // Test fields.
+
+ /**
+ * Test widgets.
+ */
+ public function testTextfieldWidgets() {
+ $this->_testTextfieldWidgets('string', 'string_textfield');
+ $this->_testTextfieldWidgets('string_long', 'string_textarea');
+ }
+
+ /**
+ * Helper function for testTextfieldWidgets().
+ */
+ public function _testTextfieldWidgets($field_type, $widget_type) {
+ // Create a field.
+ $field_name = Unicode::strtolower($this->randomMachineName());
+ $field_storage = FieldStorageConfig::create([
+ 'field_name' => $field_name,
+ 'entity_type' => 'entity_test',
+ 'type' => $field_type
+ ]);
+ $field_storage->save();
+ FieldConfig::create([
+ 'field_storage' => $field_storage,
+ 'bundle' => 'entity_test',
+ 'label' => $this->randomMachineName() . '_label',
+ ])->save();
+ entity_get_form_display('entity_test', 'entity_test', 'default')
+ ->setComponent($field_name, [
+ 'type' => $widget_type,
+ 'settings' => [
+ 'placeholder' => 'A placeholder on ' . $widget_type,
+ ],
+ ])
+ ->save();
+ entity_get_display('entity_test', 'entity_test', 'full')
+ ->setComponent($field_name)
+ ->save();
+
+ // Display creation form.
+ $this->drupalGet('entity_test/add');
+ $this->assertFieldByName("{$field_name}[0][value]", '', 'Widget is displayed');
+ $this->assertNoFieldByName("{$field_name}[0][format]", '1', 'Format selector is not displayed');
+ $this->assertRaw(format_string('placeholder="A placeholder on @widget_type"', ['@widget_type' => $widget_type]));
+
+ // Submit with some value.
+ $value = $this->randomMachineName();
+ $edit = [
+ "{$field_name}[0][value]" => $value,
+ ];
+ $this->drupalPostForm(NULL, $edit, t('Save'));
+ preg_match('|entity_test/manage/(\d+)|', $this->url, $match);
+ $id = $match[1];
+ $this->assertText(t('entity_test @id has been created.', ['@id' => $id]), 'Entity was created');
+
+ // Display the entity.
+ $entity = EntityTest::load($id);
+ $display = entity_get_display($entity->getEntityTypeId(), $entity->bundle(), 'full');
+ $content = $display->build($entity);
+ $this->setRawContent(\Drupal::service('renderer')->renderRoot($content));
+ $this->assertText($value, 'Filtered tags are not displayed');
+ }
+
+}