Issue #2443119 by geertvd: Views preview not working for REST display

core/modules/rest/src/Tests/Views/StyleSerializerTest.php

@@ -292,6 +292,19 @@ public function testLivePreview() {
     $this->assertEqual($rendered_json, $expected, 'Ensure the previewed json is escaped.');
   }
 
+  /**
+   * Tests the views interface for rest export displays.
+   */
+  public function testSerializerViewsUI() {
+    $this->drupalLogin($this->adminUser);
+    // Click the "Update preview button".
+    $this->drupalPostForm('admin/structure/views/view/test_serializer_display_field/edit/rest_export_1', $edit = array(), t('Update preview'));
+    $this->assertResponse(200);
+    // Check if we receive the expected result.
+    $result = $this->xpath('//div[@id="views-live-preview"]/pre');
+    $this->assertIdentical($this->drupalGet('test/serialize/field'), (string) $result[0], 'The expected JSON preview output was found.');
+  }
+
   /**
    * Tests the field row style using fieldapi fields.
    */

core/modules/views/src/Plugin/views/display/PathPluginBase.php

@@ -502,7 +502,7 @@ public function getRouteName() {
     // Check for overridden route names.
     $view_route_names = $this->getAlteredRouteNames();
 
-    return (isset($view_route_names[$view_route_key]) ? $view_route_names[$view_route_key] : "views.$view_route_key");
+    return (isset($view_route_names[$view_route_key]) ? $view_route_names[$view_route_key] : "view.$view_route_key");
   }
 
   /**

core/modules/views/tests/src/Unit/Plugin/display/PathPluginBaseTest.php

@@ -311,6 +311,24 @@ public function testAlterRoutesWithOptionalParameters() {
     $this->assertEquals(array('arg_0' => 'parameter'), $route->getOption('_view_argument_map'));
   }
 
+  /**
+   * Tests the getRouteName method.
+   */
+  public function testGetRouteName() {
+    list($view) = $this->setupViewExecutableAccessPlugin();
+
+    $display = array();
+    $display['display_plugin'] = 'page';
+    $display['id'] = 'page_1';
+    $display['display_options'] = array(
+      'path' => 'test_route',
+    );
+    $this->pathPlugin->initDisplay($view, $display);
+    $route_name = $this->pathPlugin->getRouteName();
+    // Ensure that the expected routename is returned.
+    $this->assertEquals('view.test_id.page_1', $route_name);
+  }
+
   /**
    * Returns some mocked view entity, view executable, and access plugin.
    */