diff --git a/core/modules/content_translation/src/Tests/ContentTestTranslationUITest.php b/core/modules/content_translation/src/Tests/ContentTestTranslationUITest.php
index 337667c..aa49915 100644
--- a/core/modules/content_translation/src/Tests/ContentTestTranslationUITest.php
+++ b/core/modules/content_translation/src/Tests/ContentTestTranslationUITest.php
@@ -37,15 +37,4 @@ protected function getTranslatorPermissions() {
     return array_merge(parent::getTranslatorPermissions(), array('administer entity_test content'));
   }
 
-  /**
-   * Overrides \Drupal\content_translation\Tests\ContentTranslationUITest::getNewEntityValues().
-   */
-  protected function getNewEntityValues($langcode) {
-    $user = $this->drupalCreateUser();
-    return array(
-      'name' => $this->randomMachineName(),
-      'user_id' => $user->id(),
-    ) + parent::getNewEntityValues($langcode);
-  }
-
 }
diff --git a/core/modules/datetime/src/Tests/DateTimeFieldTest.php b/core/modules/datetime/src/Tests/DateTimeFieldTest.php
index 2a45c4a..27ab2c6 100644
--- a/core/modules/datetime/src/Tests/DateTimeFieldTest.php
+++ b/core/modules/datetime/src/Tests/DateTimeFieldTest.php
@@ -101,8 +101,6 @@ function testDateField() {
     $time_format = entity_load('date_format', 'html_time')->getPattern();
 
     $edit = array(
-      'user_id' => 1,
-      'name' => $this->randomMachineName(),
       "{$field_name}[0][value][date]" => $date->format($date_format),
     );
     $this->drupalPostForm(NULL, $edit, t('Save'));
@@ -170,8 +168,6 @@ function testDatetimeField() {
     $time_format = entity_load('date_format', 'html_time')->getPattern();
 
     $edit = array(
-      'user_id' => 1,
-      'name' => $this->randomMachineName(),
       "{$field_name}[0][value][date]" => $date->format($date_format),
       "{$field_name}[0][value][time]" => $date->format($time_format),
     );
@@ -258,10 +254,7 @@ function testDatelistWidget() {
     // Submit a valid date and ensure it is accepted.
     $date_value = array('year' => 2012, 'month' => 12, 'day' => 31, 'hour' => 5, 'minute' => 15);
 
-    $edit = array(
-      'user_id' => 1,
-      'name' => $this->randomMachineName(),
-    );
+    $edit = array();
     // Add the ampm indicator since we are testing 12 hour time.
     $date_value['ampm'] = 'am';
     foreach ($date_value as $part => $value) {
diff --git a/core/modules/entity_reference/src/Tests/EntityReferenceIntegrationTest.php b/core/modules/entity_reference/src/Tests/EntityReferenceIntegrationTest.php
index f13cc5d..d1c59ac 100644
--- a/core/modules/entity_reference/src/Tests/EntityReferenceIntegrationTest.php
+++ b/core/modules/entity_reference/src/Tests/EntityReferenceIntegrationTest.php
@@ -59,7 +59,6 @@ protected function setUp() {
    * Tests the entity reference field with all its supported field widgets.
    */
   public function testSupportedEntityTypesAndWidgets() {
-    $user_id = mt_rand(128, 256);
     foreach ($this->getTestEntities() as $referenced_entities) {
       $this->fieldName = 'field_test_' . $referenced_entities[0]->getEntityTypeId();
 
@@ -69,15 +68,9 @@ public function testSupportedEntityTypesAndWidgets() {
       // Test the default 'entity_reference_autocomplete' widget.
       entity_get_form_display($this->entityType, $this->bundle, 'default')->setComponent($this->fieldName)->save();
 
-      $user_id++;
-      entity_create('user', array(
-        'uid' => $user_id,
-        'name' => $this->randomString(),
-      ))->save();
       $entity_name = $this->randomMachineName();
       $edit = array(
-        'name' => $entity_name,
-        'user_id' => $user_id,
+        'name[0][value]' => $entity_name,
         $this->fieldName . '[0][target_id]' => $referenced_entities[0]->label() . ' (' . $referenced_entities[0]->id() . ')',
         // Test an input of the entity label without a ' (entity_id)' suffix.
         $this->fieldName . '[1][target_id]' => $referenced_entities[1]->label(),
@@ -100,14 +93,8 @@ public function testSupportedEntityTypesAndWidgets() {
       $target_id = $referenced_entities[0]->label() . ' (' . $referenced_entities[0]->id() . ')';
       // Test an input of the entity label without a ' (entity_id)' suffix.
       $target_id .= ', ' . $referenced_entities[1]->label();
-      $user_id++;
-      entity_create('user', array(
-        'uid' => $user_id,
-        'name' => $this->randomString(),
-      ))->save();
       $edit = array(
-        'name' => $entity_name,
-        'user_id' => $user_id,
+        'name[0][value]' => $entity_name,
         $this->fieldName . '[target_id]' => $target_id,
       );
       $this->drupalPostForm($this->entityType . '/add', $edit, t('Save'));
@@ -122,8 +109,7 @@ public function testSupportedEntityTypesAndWidgets() {
       // Test all the other widgets supported by the entity reference field.
       // Since we don't know the form structure for these widgets, just test
       // that editing and saving an already created entity works.
-      // Also exclude the special author reference widgets.
-      $exclude = array('entity_reference_autocomplete', 'entity_reference_autocomplete_tags', 'route_based_autocomplete', 'author_autocomplete');
+      $exclude = array('entity_reference_autocomplete', 'entity_reference_autocomplete_tags');
       $entity = current(entity_load_multiple_by_properties($this->entityType, array('name' => $entity_name)));
       $supported_widgets = \Drupal::service('plugin.manager.field.widget')->getOptions('entity_reference');
       $supported_widget_types = array_diff(array_keys($supported_widgets), $exclude);
diff --git a/core/modules/entity_reference/src/Tests/Views/EntityReferenceRelationshipTest.php b/core/modules/entity_reference/src/Tests/Views/EntityReferenceRelationshipTest.php
index ca44975..2713521 100644
--- a/core/modules/entity_reference/src/Tests/Views/EntityReferenceRelationshipTest.php
+++ b/core/modules/entity_reference/src/Tests/Views/EntityReferenceRelationshipTest.php
@@ -49,6 +49,7 @@ class EntityReferenceRelationshipTest extends ViewUnitTestBase {
   protected function setUp() {
     parent::setUp();
 
+    $this->installEntitySchema('user');
     $this->installEntitySchema('entity_test');
 
     ViewTestData::createTestViews(get_class($this), array('entity_reference_test_views'));
diff --git a/core/modules/field/src/Tests/Boolean/BooleanFieldTest.php b/core/modules/field/src/Tests/Boolean/BooleanFieldTest.php
index 85c0746..22e2852 100644
--- a/core/modules/field/src/Tests/Boolean/BooleanFieldTest.php
+++ b/core/modules/field/src/Tests/Boolean/BooleanFieldTest.php
@@ -103,8 +103,6 @@ function testBooleanField() {
 
     // Submit and ensure it is accepted.
     $edit = array(
-      'user_id' => 1,
-      'name' => $this->randomMachineName(),
       "{$field_name}[value]" => 1,
     );
     $this->drupalPostForm(NULL, $edit, t('Save'));
diff --git a/core/modules/field/src/Tests/Email/EmailFieldTest.php b/core/modules/field/src/Tests/Email/EmailFieldTest.php
index 738c2d7..d51b698 100644
--- a/core/modules/field/src/Tests/Email/EmailFieldTest.php
+++ b/core/modules/field/src/Tests/Email/EmailFieldTest.php
@@ -90,8 +90,6 @@ function testEmailField() {
     // Submit a valid email address and ensure it is accepted.
     $value = 'test@example.com';
     $edit = array(
-      'user_id' => 1,
-      'name' => $this->randomMachineName(),
       "{$field_name}[0][value]" => $value,
     );
     $this->drupalPostForm(NULL, $edit, t('Save'));
diff --git a/core/modules/field/src/Tests/FieldUnitTestBase.php b/core/modules/field/src/Tests/FieldUnitTestBase.php
index 67ca02e..c69ee2d 100644
--- a/core/modules/field/src/Tests/FieldUnitTestBase.php
+++ b/core/modules/field/src/Tests/FieldUnitTestBase.php
@@ -53,6 +53,17 @@ protected function setUp() {
 
     // Set default storage backend and configure the theme system.
     $this->installConfig(array('field', 'system'));
+
+    // Create user 1.
+    $storage = \Drupal::entityManager()->getStorage('user');
+    $storage
+      ->create(array(
+        'uid' => 1,
+        'name' => 'entity-test',
+        'mail' => 'entity@localhost',
+        'status' => TRUE,
+      ))
+      ->save();
   }
 
   /**
diff --git a/core/modules/field/src/Tests/FormTest.php b/core/modules/field/src/Tests/FormTest.php
index bea7e14..8000c68 100644
--- a/core/modules/field/src/Tests/FormTest.php
+++ b/core/modules/field/src/Tests/FormTest.php
@@ -114,8 +114,6 @@ function testFieldFormSingle() {
 
     // Submit with invalid value (field-level validation).
     $edit = array(
-      'user_id' => 1,
-      'name' => $this->randomMachineName(),
       "{$field_name}[0][value]" => -1
     );
     $this->drupalPostForm(NULL, $edit, t('Save'));
@@ -125,8 +123,6 @@ function testFieldFormSingle() {
     // Create an entity
     $value = mt_rand(1, 127);
     $edit = array(
-      'user_id' => 1,
-      'name' => $this->randomMachineName(),
       "{$field_name}[0][value]" => $value,
     );
     $this->drupalPostForm(NULL, $edit, t('Save'));
@@ -144,8 +140,6 @@ function testFieldFormSingle() {
     // Update the entity.
     $value = mt_rand(1, 127);
     $edit = array(
-      'user_id' => 1,
-      'name' => $this->randomMachineName(),
       "{$field_name}[0][value]" => $value,
     );
     $this->drupalPostForm(NULL, $edit, t('Save'));
@@ -157,8 +151,6 @@ function testFieldFormSingle() {
     // Empty the field.
     $value = '';
     $edit = array(
-      'user_id' => 1,
-      'name' => $this->randomMachineName(),
       "{$field_name}[0][value]" => $value
     );
     $this->drupalPostForm('entity_test/manage/' . $id, $edit, t('Save'));
@@ -190,8 +182,6 @@ function testFieldFormDefaultValue() {
 
     // Try to submit an empty value.
     $edit = array(
-      'user_id' => 1,
-      'name' => $this->randomMachineName(),
       "{$field_name}[0][value]" => '',
     );
     $this->drupalPostForm(NULL, $edit, t('Save'));
@@ -221,8 +211,6 @@ function testFieldFormSingleRequired() {
     // Create an entity
     $value = mt_rand(1, 127);
     $edit = array(
-      'user_id' => 1,
-      'name' => $this->randomMachineName(),
       "{$field_name}[0][value]" => $value,
     );
     $this->drupalPostForm(NULL, $edit, t('Save'));
@@ -235,8 +223,6 @@ function testFieldFormSingleRequired() {
     // Edit with missing required value.
     $value = '';
     $edit = array(
-      'user_id' => 1,
-      'name' => $this->randomMachineName(),
       "{$field_name}[0][value]" => $value,
     );
     $this->drupalPostForm('entity_test/manage/' . $id, $edit, t('Save'));
@@ -280,10 +266,7 @@ function testFieldFormUnlimited() {
     $count = 3;
     $delta_range = $count - 1;
     $values = $weights = $pattern = $expected_values = array();
-    $edit = array(
-      'user_id' => 1,
-      'name' => $this->randomMachineName(),
-    );
+    $edit = array();
     for ($delta = 0; $delta <= $delta_range; $delta++) {
       // Assign unique random values and weights.
       do {
@@ -463,8 +446,6 @@ function testFieldFormMultipleWidget() {
 
     // Create entity with three values.
     $edit = array(
-      'user_id' => 1,
-      'name' => $this->randomMachineName(),
       $field_name => '1, 2, 3',
     );
     $this->drupalPostForm(NULL, $edit, t('Save'));
@@ -543,8 +524,6 @@ function testFieldFormAccess() {
 
     // Create entity.
     $edit = array(
-      'user_id' => 1,
-      'name' => $this->randomMachineName(),
       "{$field_name}[0][value]" => 1,
     );
     $this->drupalPostForm(NULL, $edit, t('Save'));
@@ -558,8 +537,6 @@ function testFieldFormAccess() {
 
     // Create a new revision.
     $edit = array(
-      'user_id' => 1,
-      'name' => $this->randomMachineName(),
       "{$field_name}[0][value]" => 2,
       'revision' => TRUE,
     );
@@ -601,7 +578,7 @@ function testHiddenField() {
     // Create an entity and test that the default value is assigned correctly to
     // the field that uses the hidden widget.
     $this->assertNoField("{$field_name}[0][value]", 'The field does not appear in the form');
-    $this->drupalPostForm(NULL, array('user_id' => 1, 'name' => $this->randomMachineName()), t('Save'));
+    $this->drupalPostForm(NULL, array(), t('Save'));
     preg_match('|' . $entity_type . '/manage/(\d+)|', $this->url, $match);
     $id = $match[1];
     $this->assertText(t('entity_test_rev @id has been created.', array('@id' => $id)), 'Entity was created');
diff --git a/core/modules/field/src/Tests/Number/NumberFieldTest.php b/core/modules/field/src/Tests/Number/NumberFieldTest.php
index 82b69d2..a243373 100644
--- a/core/modules/field/src/Tests/Number/NumberFieldTest.php
+++ b/core/modules/field/src/Tests/Number/NumberFieldTest.php
@@ -79,8 +79,6 @@ function testNumberDecimalField() {
     // Submit a signed decimal value within the allowed precision and scale.
     $value = '-1234.5678';
     $edit = array(
-      'user_id' => 1,
-      'name' => $this->randomMachineName(),
       "{$field_name}[0][value]" => $value,
     );
     $this->drupalPostForm(NULL, $edit, t('Save'));
@@ -172,8 +170,6 @@ function testNumberIntegerField() {
     // Submit a valid integer
     $value = rand($minimum, $maximum);
     $edit = array(
-      'user_id' => 1,
-      'name' => $this->randomMachineName(),
       "{$field_name}[0][value]" => $value,
     );
     $this->drupalPostForm(NULL, $edit, t('Save'));
@@ -184,8 +180,6 @@ function testNumberIntegerField() {
     // Try to set a value below the minimum value
     $this->drupalGet('entity_test/add');
     $edit = array(
-      'user_id' => 1,
-      'name' => $this->randomMachineName(),
       "{$field_name}[0][value]" => $minimum - 1,
     );
     $this->drupalPostForm(NULL, $edit, t('Save'));
@@ -194,8 +188,6 @@ function testNumberIntegerField() {
     // Try to set a decimal value
     $this->drupalGet('entity_test/add');
     $edit = array(
-      'user_id' => 1,
-      'name' => $this->randomMachineName(),
       "{$field_name}[0][value]" => 1.5,
     );
     $this->drupalPostForm(NULL, $edit, t('Save'));
@@ -204,8 +196,6 @@ function testNumberIntegerField() {
     // Try to set a value above the maximum value
     $this->drupalGet('entity_test/add');
     $edit = array(
-      'user_id' => 1,
-      'name' => $this->randomMachineName(),
       "{$field_name}[0][value]" => $maximum + 1,
     );
     $this->drupalPostForm(NULL, $edit, t('Save'));
@@ -221,8 +211,6 @@ function testNumberIntegerField() {
     foreach ($valid_entries as $valid_entry) {
       $this->drupalGet('entity_test/add');
       $edit = array(
-        'user_id' => 1,
-        'name' => $this->randomMachineName(),
         "{$field_name}[0][value]" => $valid_entry,
       );
       $this->drupalPostForm(NULL, $edit, t('Save'));
@@ -274,8 +262,6 @@ function testNumberFloatField() {
     // Submit a signed decimal value within the allowed precision and scale.
     $value = '-1234.5678';
     $edit = array(
-      'user_id' => 1,
-      'name' => $this->randomMachineName(),
       "{$field_name}[0][value]" => $value,
     );
     $this->drupalPostForm(NULL, $edit, t('Save'));
diff --git a/core/modules/field/src/Tests/TranslationWebTest.php b/core/modules/field/src/Tests/TranslationWebTest.php
index 6646072..2778ff7 100644
--- a/core/modules/field/src/Tests/TranslationWebTest.php
+++ b/core/modules/field/src/Tests/TranslationWebTest.php
@@ -109,8 +109,6 @@ function testFieldFormTranslationRevisions() {
 
     // Create a new revision.
     $edit = array(
-      'user_id' => 1,
-      'name' => $this->randomMachineName(),
       "{$field_name}[0][value]" => $entity->{$field_name}->value,
       'revision' => TRUE,
     );
diff --git a/core/modules/hal/src/Tests/NormalizeTest.php b/core/modules/hal/src/Tests/NormalizeTest.php
index 2d15299..00d6687 100644
--- a/core/modules/hal/src/Tests/NormalizeTest.php
+++ b/core/modules/hal/src/Tests/NormalizeTest.php
@@ -36,7 +36,6 @@ public function testNormalize() {
     $values = array(
       'langcode' => 'de',
       'name' => $this->randomMachineName(),
-      'user_id' => 1,
       'field_test_text' => array(
         'value' => $this->randomMachineName(),
         'format' => 'full_html',
diff --git a/core/modules/link/src/Tests/LinkFieldTest.php b/core/modules/link/src/Tests/LinkFieldTest.php
index c7eb596..fb87d73 100644
--- a/core/modules/link/src/Tests/LinkFieldTest.php
+++ b/core/modules/link/src/Tests/LinkFieldTest.php
@@ -149,8 +149,6 @@ function testURLValidation() {
   protected function assertValidEntries($field_name, array $valid_entries) {
     foreach ($valid_entries as $value) {
       $edit = array(
-        'user_id' => 1,
-        'name' => $this->randomMachineName(),
         "{$field_name}[0][url]" => $value,
       );
       $this->drupalPostForm('entity_test/add', $edit, t('Save'));
@@ -172,8 +170,6 @@ protected function assertValidEntries($field_name, array $valid_entries) {
   protected function assertInvalidEntries($field_name, array $invalid_entries) {
     foreach ($invalid_entries as $invalid_value) {
       $edit = array(
-        'user_id' => 1,
-        'name' => $this->randomMachineName(),
         "{$field_name}[0][url]" => $invalid_value,
       );
       $this->drupalPostForm('entity_test/add', $edit, t('Save'));
@@ -270,8 +266,6 @@ function testLinkTitle() {
     // Verify that a link without link text is rendered using the URL as text.
     $value = 'http://www.example.com/';
     $edit = array(
-      'user_id' => 1,
-      'name' => $this->randomMachineName(),
       "{$field_name}[0][url]" => $value,
       "{$field_name}[0][title]" => '',
     );
@@ -287,8 +281,6 @@ function testLinkTitle() {
     // Verify that a link with text is rendered using the link text.
     $title = $this->randomMachineName();
     $edit = array(
-      'user_id' => 1,
-      'name' => $this->randomMachineName(),
       "{$field_name}[0][title]" => $title,
     );
     $this->drupalPostForm("entity_test/manage/$id", $edit, t('Save'));
@@ -346,8 +338,6 @@ function testLinkFormatter() {
     // Intentionally contains an ampersand that needs sanitization on output.
     $title2 = 'A very long & strange example title that could break the nice layout of the site';
     $edit = array(
-      'user_id' => 1,
-      'name' => $this->randomMachineName(),
       "{$field_name}[0][url]" => $url1,
       // Note that $title1 is not submitted.
       "{$field_name}[0][title]" => '',
@@ -486,8 +476,6 @@ function testLinkSeparateFormatter() {
     // Intentionally contains an ampersand that needs sanitization on output.
     $title2 = 'A very long & strange example title that could break the nice layout of the site';
     $edit = array(
-      'user_id' => 1,
-      'name' => $this->randomMachineName(),
       "{$field_name}[0][url]" => $url1,
       "{$field_name}[1][url]" => $url2,
       "{$field_name}[1][title]" => $title2,
diff --git a/core/modules/quickedit/src/Tests/QuickEditTestBase.php b/core/modules/quickedit/src/Tests/QuickEditTestBase.php
index 4f4ece7..e4a5416 100644
--- a/core/modules/quickedit/src/Tests/QuickEditTestBase.php
+++ b/core/modules/quickedit/src/Tests/QuickEditTestBase.php
@@ -42,6 +42,7 @@ protected function setUp() {
 
     $this->fields = new \ArrayObject(array(), \ArrayObject::ARRAY_AS_PROPS);
 
+    $this->installEntitySchema('user');
     $this->installEntitySchema('entity_test');
     $this->installConfig(array('field', 'filter'));
   }
diff --git a/core/modules/system/src/Tests/Entity/EntityFormTest.php b/core/modules/system/src/Tests/Entity/EntityFormTest.php
index a60c53e..e7b21c6 100644
--- a/core/modules/system/src/Tests/Entity/EntityFormTest.php
+++ b/core/modules/system/src/Tests/Entity/EntityFormTest.php
@@ -61,8 +61,7 @@ protected function assertFormCRUD($entity_type) {
     $name2 = $this->randomMachineName(10);
 
     $edit = array(
-      'name' => $name1,
-      'user_id' => mt_rand(0, 128),
+      'name[0][value]' => $name1,
       'field_test_text[0][value]' => $this->randomMachineName(16),
     );
 
@@ -70,7 +69,7 @@ protected function assertFormCRUD($entity_type) {
     $entity = $this->loadEntityByName($entity_type, $name1);
     $this->assertTrue($entity, format_string('%entity_type: Entity found in the database.', array('%entity_type' => $entity_type)));
 
-    $edit['name'] = $name2;
+    $edit['name[0][value]'] = $name2;
     $this->drupalPostForm($entity_type . '/manage/' . $entity->id(), $edit, t('Save'));
     $entity = $this->loadEntityByName($entity_type, $name1);
     $this->assertFalse($entity, format_string('%entity_type: The entity has been modified.', array('%entity_type' => $entity_type)));
diff --git a/core/modules/system/src/Tests/Entity/EntityRevisionsTest.php b/core/modules/system/src/Tests/Entity/EntityRevisionsTest.php
index 5eb2858..d484c8b 100644
--- a/core/modules/system/src/Tests/Entity/EntityRevisionsTest.php
+++ b/core/modules/system/src/Tests/Entity/EntityRevisionsTest.php
@@ -98,7 +98,7 @@ protected function assertRevisions($entity_type) {
     // Confirm the correct revision text appears in the edit form.
     $entity = entity_load($entity_type, $entity->id->value);
     $this->drupalGet($entity_type . '/manage/' . $entity->id->value);
-    $this->assertFieldById('edit-name', $entity->name->value, format_string('%entity_type: Name matches in UI.', array('%entity_type' => $entity_type)));
+    $this->assertFieldById('edit-name-0-value', $entity->name->value, format_string('%entity_type: Name matches in UI.', array('%entity_type' => $entity_type)));
     $this->assertFieldById('edit-field-test-text-0-value', $entity->field_test_text->value, format_string('%entity_type: Text matches in UI.', array('%entity_type' => $entity_type)));
   }
 }
diff --git a/core/modules/system/src/Tests/KeyValueStore/KeyValueContentEntityStorageTest.php b/core/modules/system/src/Tests/KeyValueStore/KeyValueContentEntityStorageTest.php
index 2986920..721b8d3 100644
--- a/core/modules/system/src/Tests/KeyValueStore/KeyValueContentEntityStorageTest.php
+++ b/core/modules/system/src/Tests/KeyValueStore/KeyValueContentEntityStorageTest.php
@@ -9,14 +9,14 @@
 
 use Drupal\Core\Entity\EntityMalformedException;
 use Drupal\Core\Entity\EntityStorageException;
-use Drupal\simpletest\DrupalUnitTestBase;
+use Drupal\simpletest\KernelTestBase;
 
 /**
  * Tests KeyValueEntityStorage for content entities.
  *
  * @group KeyValueStore
  */
-class KeyValueContentEntityStorageTest extends DrupalUnitTestBase {
+class KeyValueContentEntityStorageTest extends KernelTestBase {
 
   /**
    * Modules to enable.
@@ -26,6 +26,14 @@ class KeyValueContentEntityStorageTest extends DrupalUnitTestBase {
   public static $modules = array('entity', 'user', 'entity_test', 'keyvalue_test');
 
   /**
+   * {@inheritdoc}
+   */
+  protected function setUp() {
+    parent::setUp();
+    $this->installEntitySchema('user');
+  }
+
+  /**
    * Tests CRUD operations.
    */
   function testCRUD() {
diff --git a/core/modules/system/tests/modules/entity_test/entity_test.info.yml b/core/modules/system/tests/modules/entity_test/entity_test.info.yml
index bd4382e..8d3200c 100644
--- a/core/modules/system/tests/modules/entity_test/entity_test.info.yml
+++ b/core/modules/system/tests/modules/entity_test/entity_test.info.yml
@@ -7,3 +7,4 @@ core: 8.x
 dependencies:
   - field
   - text
+  - entity_reference
diff --git a/core/modules/system/tests/modules/entity_test/src/Entity/EntityTest.php b/core/modules/system/tests/modules/entity_test/src/Entity/EntityTest.php
index 3993dcf..34dc997 100644
--- a/core/modules/system/tests/modules/entity_test/src/Entity/EntityTest.php
+++ b/core/modules/system/tests/modules/entity_test/src/Entity/EntityTest.php
@@ -88,6 +88,10 @@ public static function baseFieldDefinitions(EntityTypeInterface $entity_type) {
         'label' => 'hidden',
         'type' => 'string',
         'weight' => -5,
+      ))
+      ->setDisplayOptions('form', array(
+        'type' => 'string',
+        'weight' => -5,
       ));
 
     // @todo: Add allowed values validation.
@@ -99,8 +103,22 @@ public static function baseFieldDefinitions(EntityTypeInterface $entity_type) {
     $fields['user_id'] = BaseFieldDefinition::create('entity_reference')
       ->setLabel(t('User ID'))
       ->setDescription(t('The ID of the associated user.'))
-      ->setSettings(array('target_type' => 'user'))
-      ->setTranslatable(TRUE);
+      ->setSetting('target_type', 'user')
+      ->setSetting('handler', 'default')
+      // Default EntityTest entities to have the root user as the owner, to
+      // simplify testing.
+      ->setDefaultValue(array(0 => 1))
+      ->setTranslatable(TRUE)
+      ->setDisplayOptions('form', array(
+        'type' => 'entity_reference_autocomplete',
+        'weight' => -1,
+        'settings' => array(
+          'match_operator' => 'CONTAINS',
+          'size' => '60',
+          'autocomplete_type' => 'tags',
+          'placeholder' => '',
+        ),
+      ));
 
     return $fields;
   }
diff --git a/core/modules/system/tests/modules/entity_test/src/EntityTestForm.php b/core/modules/system/tests/modules/entity_test/src/EntityTestForm.php
index 6845520..1db41d4 100644
--- a/core/modules/system/tests/modules/entity_test/src/EntityTestForm.php
+++ b/core/modules/system/tests/modules/entity_test/src/EntityTestForm.php
@@ -6,6 +6,7 @@
 
 namespace Drupal\entity_test;
 
+use Drupal\Component\Utility\Random;
 use Drupal\Core\Entity\ContentEntityForm;
 use Drupal\Core\Form\FormStateInterface;
 use Drupal\Core\Language\LanguageInterface;
@@ -18,30 +19,22 @@ class EntityTestForm extends ContentEntityForm {
   /**
    * {@inheritdoc}
    */
+  protected function prepareEntity() {
+    if (empty($this->entity->name->value)) {
+      // Assign a random name to new EntityTest entities, to avoid repetition in
+      // tests.
+      $random = new Random();
+      $this->entity->name->value = $random->name();
+    }
+  }
+
+  /**
+   * {@inheritdoc}
+   */
   public function form(array $form, FormStateInterface $form_state) {
     $form = parent::form($form, $form_state);
     $entity = $this->entity;
 
-    $form['name'] = array(
-      '#type' => 'textfield',
-      '#title' => t('Name'),
-      '#default_value' => $entity->name->value,
-      '#size' => 60,
-      '#maxlength' => 128,
-      '#required' => TRUE,
-      '#weight' => -10,
-    );
-
-    $form['user_id'] = array(
-      '#type' => 'textfield',
-      '#title' => 'UID',
-      '#default_value' => $entity->user_id->target_id,
-      '#size' => 60,
-      '#maxlength' => 128,
-      '#required' => TRUE,
-      '#weight' => -10,
-    );
-
     $form['langcode'] = array(
       '#title' => t('Language'),
       '#type' => 'language_select',
diff --git a/core/modules/taxonomy/src/Tests/TermFieldMultipleVocabularyTest.php b/core/modules/taxonomy/src/Tests/TermFieldMultipleVocabularyTest.php
index 4588587..224d2b6 100644
--- a/core/modules/taxonomy/src/Tests/TermFieldMultipleVocabularyTest.php
+++ b/core/modules/taxonomy/src/Tests/TermFieldMultipleVocabularyTest.php
@@ -86,8 +86,6 @@ function testTaxonomyTermFieldMultipleVocabularies() {
     // used to ignore the value check.
     $this->assertFieldByName("{$this->field_name}[]", NULL, 'Widget is displayed.');
     $edit = array(
-      'user_id' => mt_rand(0, 10),
-      'name' => $this->randomMachineName(),
       "{$this->field_name}[]" => array($term1->id(), $term2->id()),
     );
     $this->drupalPostForm(NULL, $edit, t('Save'));
@@ -128,8 +126,6 @@ function testTaxonomyTermFieldMultipleVocabularies() {
 
     // Term 1 should still pass validation.
     $edit = array(
-      'user_id' => mt_rand(0, 10),
-      'name' => $this->randomMachineName(),
       "{$this->field_name}[]" => array($term1->id()),
     );
     $this->drupalPostForm(NULL, $edit, t('Save'));
diff --git a/core/modules/taxonomy/src/Tests/TermFieldTest.php b/core/modules/taxonomy/src/Tests/TermFieldTest.php
index fa0f007..41ad7a5 100644
--- a/core/modules/taxonomy/src/Tests/TermFieldTest.php
+++ b/core/modules/taxonomy/src/Tests/TermFieldTest.php
@@ -109,8 +109,6 @@ function testTaxonomyTermFieldWidgets() {
 
     // Submit with some value.
     $edit = array(
-      'user_id' => 1,
-      'name' => $this->randomMachineName(),
       $this->field_name => array($term->id()),
     );
     $this->drupalPostForm(NULL, $edit, t('Save'));
diff --git a/core/modules/text/src/Tests/TextFieldTest.php b/core/modules/text/src/Tests/TextFieldTest.php
index 330d9f8..bbf341f 100644
--- a/core/modules/text/src/Tests/TextFieldTest.php
+++ b/core/modules/text/src/Tests/TextFieldTest.php
@@ -121,8 +121,6 @@ function _testTextfieldWidgets($field_type, $widget_type) {
     // Submit with some value.
     $value = $this->randomMachineName();
     $edit = array(
-      'user_id' => 1,
-      'name' => $this->randomMachineName(),
       "{$field_name}[0][value]" => $value,
     );
     $this->drupalPostForm(NULL, $edit, t('Save'));
@@ -193,8 +191,6 @@ function _testTextfieldWidgetsFormatted($field_type, $widget_type) {
     // Submit with data that should be filtered.
     $value = '<em>' . $this->randomMachineName() . '</em>';
     $edit = array(
-      'user_id' => 1,
-      'name' => $this->randomMachineName(),
       "{$field_name}[0][value]" => $value,
     );
     $this->drupalPostForm(NULL, $edit, t('Save'));
@@ -235,8 +231,6 @@ function _testTextfieldWidgetsFormatted($field_type, $widget_type) {
 
     // Edit and change the text format to the new one that was created.
     $edit = array(
-      'user_id' => 1,
-      'name' => $this->randomMachineName(),
       "{$field_name}[0][format]" => $format_id,
     );
     $this->drupalPostForm(NULL, $edit, t('Save'));
diff --git a/core/modules/views/src/Tests/QueryGroupByTest.php b/core/modules/views/src/Tests/QueryGroupByTest.php
index b6132fc..5958e8d 100644
--- a/core/modules/views/src/Tests/QueryGroupByTest.php
+++ b/core/modules/views/src/Tests/QueryGroupByTest.php
@@ -43,6 +43,7 @@ class QueryGroupByTest extends ViewUnitTestBase {
   protected function setUp() {
     parent::setUp();
 
+    $this->installEntitySchema('user');
     $this->installEntitySchema('entity_test');
 
     $this->storage = $this->container->get('entity.manager')->getStorage('entity_test');