diff --git a/core/modules/taxonomy/src/Tests/Views/TaxonomyRelationshipTest.php b/core/modules/taxonomy/src/Tests/Views/TaxonomyRelationshipTest.php
new file mode 100644
index 0000000..061fb9a
--- /dev/null
+++ b/core/modules/taxonomy/src/Tests/Views/TaxonomyRelationshipTest.php
@@ -0,0 +1,112 @@
+<?php
+
+/**
+ * @file
+ * Contains \Drupal\taxonomy\Tests\Views\TaxonomyParentUITest.
+ */
+
+namespace Drupal\taxonomy\Tests\Views;
+
+use Drupal\node\NodeInterface;
+use Drupal\taxonomy\TermInterface;
+use Drupal\views\Tests\ViewTestData;
+use Drupal\views\Views;
+
+/**
+ * Tests taxonomy relationships with parent term and node.
+ *
+ * @group taxonomy
+ */
+class TaxonomyRelationshipTest extends TaxonomyTestBase {
+
+  /**
+   * Stores the terms used in the tests.
+   *
+   * @var \Drupal\taxonomy\TermInterface[]
+   */
+  protected $terms = array();
+
+  /**
+   * Views used by this test.
+   *
+   * @var array
+   */
+  public static $testViews = array('test_taxonomy_term_relationship');
+
+  /**
+   * {@inheritdoc}
+   */
+  protected function setUp() {
+    parent::setUp();
+
+    // Make term2 parent of term1.
+    $this->term1->set('parent', $this->term2->id());
+    $this->term1->save();
+    // Store terms in an array for testing.
+    $this->terms[] =$this->term1;
+    $this->terms[] =$this->term2;
+    // Only set term1 on node1 and term2 on node2 for testing.
+    unset($this->nodes[0]->field_views_testing_tags[1]);
+    $this->nodes[0]->save();
+    unset($this->nodes[1]->field_views_testing_tags[0]);
+    $this->nodes[1]->save();
+
+    Views::viewsData()->clear();
+    ViewTestData::createTestViews(get_class($this), array('test_taxonomy_term_relationship'));
+
+  }
+
+  /**
+   * Tests the taxonomy parent plugin UI.
+   */
+  public function testTaxonomyRelationships() {
+
+    // Check the generated views data of taxonomy_index.
+    $views_data = Views::viewsData()->get('taxonomy_index');
+    // Check the table join data.
+    $this->assertEqual($views_data['table']['join']['taxonomy_term_field_data']['left_field'], 'tid');
+    $this->assertEqual($views_data['table']['join']['taxonomy_term_field_data']['field'], 'tid');
+    $this->assertEqual($views_data['table']['join']['node_field_data']['left_field'], 'nid');
+    $this->assertEqual($views_data['table']['join']['node_field_data']['field'], 'nid');
+    $this->assertEqual($views_data['table']['join']['taxonomy_term_hierarchy']['left_field'], 'tid');
+    $this->assertEqual($views_data['table']['join']['taxonomy_term_hierarchy']['field'], 'tid');
+
+    // Check the generated views data of taxonomy_term_hierarchy.
+    $views_data = Views::viewsData()->get('taxonomy_term_hierarchy');
+    // Check the table join data.
+    $this->assertEqual($views_data['table']['join']['taxonomy_term_hierarchy']['left_field'], 'tid');
+    $this->assertEqual($views_data['table']['join']['taxonomy_term_hierarchy']['field'], 'parent');
+    $this->assertEqual($views_data['table']['join']['taxonomy_term_field_data']['left_field'], 'tid');
+    $this->assertEqual($views_data['table']['join']['taxonomy_term_field_data']['field'], 'tid');
+    // Check the parent relationship data.
+    $this->assertEqual($views_data['parent']['relationship']['base'], 'taxonomy_term_field_data');
+    $this->assertEqual($views_data['parent']['relationship']['field'], 'parent');
+    $this->assertEqual($views_data['parent']['relationship']['label'], t('Parent'));
+    $this->assertEqual($views_data['parent']['relationship']['id'], 'standard');
+    // Check the parent filter and argument data.
+    $this->assertEqual($views_data['parent']['filter']['id'], 'numeric');
+    $this->assertEqual($views_data['parent']['argument']['id'], 'taxonomy');
+
+    // Check an actual test view.
+    $view = Views::getView('test_taxonomy_term_relationship');
+    $this->executeView($view);
+    /** @var \Drupal\views\ResultRow $row */
+    foreach ($view->result as $index => $row) {
+      // Check that the actual ID of the entity is the expected one.
+      $this->assertEqual($row->tid, $this->terms[$index]->id());
+
+      // Also check that we have the correct result entity.
+      $this->assertEqual($row->_entity->id(), $this->terms[$index]->id());
+      $this->assertTrue($row->_entity instanceof TermInterface);
+
+      if (!$index) {
+        $this->assertTrue($row->_relationship_entities['parent'] instanceof TermInterface);
+        $this->assertEqual($row->_relationship_entities['parent']->id(), $this->term2->id());
+        $this->assertEqual($row->taxonomy_term_field_data_taxonomy_term_hierarchy_tid, $this->term2->id());
+      }
+      $this->assertTrue($row->_relationship_entities['nid'] instanceof NodeInterface);
+      $this->assertEqual($row->_relationship_entities['nid']->id(), $this->nodes[$index]->id());
+    }
+  }
+
+}
diff --git a/core/modules/taxonomy/tests/modules/taxonomy_test_views/test_views/views.view.test_taxonomy_term_relationship.yml b/core/modules/taxonomy/tests/modules/taxonomy_test_views/test_views/views.view.test_taxonomy_term_relationship.yml
new file mode 100644
index 0000000..eb561c6
--- /dev/null
+++ b/core/modules/taxonomy/tests/modules/taxonomy_test_views/test_views/views.view.test_taxonomy_term_relationship.yml
@@ -0,0 +1,202 @@
+langcode: en
+status: true
+dependencies:
+  module:
+    - node
+    - taxonomy
+    - user
+id: test_taxonomy_term_relationship
+label: test_taxonomy_term_relationship
+module: views
+description: ''
+tag: ''
+base_table: taxonomy_term_field_data
+base_field: tid
+core: 8.x
+display:
+  default:
+    display_plugin: default
+    id: default
+    display_title: Master
+    position: 0
+    display_options:
+      access:
+        type: perm
+        options:
+          perm: 'access content'
+      cache:
+        type: none
+        options: {  }
+      query:
+        type: views_query
+        options:
+          disable_sql_rewrite: false
+          distinct: false
+          replica: false
+          query_comment: ''
+          query_tags: {  }
+      exposed_form:
+        type: basic
+        options:
+          submit_button: Apply
+          reset_button: false
+          reset_button_label: Reset
+          exposed_sorts_label: 'Sort by'
+          expose_sort_order: true
+          sort_asc_label: Asc
+          sort_desc_label: Desc
+      pager:
+        type: full
+        options:
+          items_per_page: 10
+          offset: 0
+          id: 0
+          total_pages: null
+          expose:
+            items_per_page: false
+            items_per_page_label: 'Items per page'
+            items_per_page_options: '5, 10, 25, 50'
+            items_per_page_options_all: false
+            items_per_page_options_all_label: '- All -'
+            offset: false
+            offset_label: Offset
+          tags:
+            previous: '‹ previous'
+            next: 'next ›'
+            first: '« first'
+            last: 'last »'
+          quantity: 9
+      style:
+        type: default
+        options:
+          grouping: {  }
+          row_class: ''
+          default_row_class: true
+          uses_fields: false
+      row:
+        type: fields
+        options:
+          inline: {  }
+          separator: ''
+          hide_empty: false
+          default_field_elements: true
+      fields:
+        tid:
+          id: tid
+          table: taxonomy_term_field_data
+          field: tid
+          entity_type: taxonomy_term
+          entity_field: tid
+          plugin_id: field
+        tid_1:
+          id: tid_1
+          table: taxonomy_term_field_data
+          field: tid
+          relationship: parent
+          group_type: group
+          admin_label: ''
+          label: ''
+          exclude: false
+          alter:
+            alter_text: false
+            text: ''
+            make_link: false
+            path: ''
+            absolute: false
+            external: false
+            replace_spaces: false
+            path_case: none
+            trim_whitespace: false
+            alt: ''
+            rel: ''
+            link_class: ''
+            prefix: ''
+            suffix: ''
+            target: ''
+            nl2br: false
+            max_length: 0
+            word_boundary: true
+            ellipsis: true
+            more_link: false
+            more_link_text: ''
+            more_link_path: ''
+            strip_tags: false
+            trim: false
+            preserve_tags: ''
+            html: false
+          element_type: ''
+          element_class: ''
+          element_label_type: ''
+          element_label_class: ''
+          element_label_colon: false
+          element_wrapper_type: ''
+          element_wrapper_class: ''
+          element_default_classes: true
+          empty: ''
+          hide_empty: false
+          empty_zero: false
+          hide_alter_empty: true
+          click_sort_column: value
+          type: number_integer
+          settings:
+            thousand_separator: ''
+            prefix_suffix: true
+          group_column: value
+          group_columns: {  }
+          group_rows: true
+          delta_limit: 0
+          delta_offset: 0
+          delta_reversed: false
+          delta_first_last: false
+          multi_type: separator
+          separator: ', '
+          field_api_classes: false
+          entity_type: taxonomy_term
+          entity_field: tid
+          plugin_id: field
+        nid:
+          id: nid
+          table: node
+          field: nid
+          entity_type: node
+          entity_field: nid
+          plugin_id: field
+          relationship: nid
+      filters: {  }
+      sorts:
+        tid:
+          id: tid
+          table: taxonomy_term_field_data
+          field: tid
+          entity_type: taxonomy_term
+          entity_field: tid
+          plugin_id: standard
+      header: {  }
+      footer: {  }
+      empty: {  }
+      relationships:
+        nid:
+          id: nid
+          table: taxonomy_index
+          field: nid
+          relationship: none
+          group_type: group
+          admin_label: node
+          required: false
+          plugin_id: standard
+        parent:
+          id: parent
+          table: taxonomy_term_hierarchy
+          field: parent
+          relationship: none
+          group_type: group
+          admin_label: Parent
+          required: false
+          plugin_id: standard
+      arguments: {  }
+      display_extenders: {  }
+    cache_metadata:
+      contexts:
+        - 'languages:language_content'
+        - 'languages:language_interface'
+      cacheable: false