Issue #2821742 by alex_optim, navneet0693, rfay: Tablesort Example nonfunctional for non-admin user

Author: alex_optim

tablesort_example/tablesort_example.routing.yml

@@ -4,3 +4,5 @@ tablesort_example_description:
     _controller: '\Drupal\tablesort_example\Controller\TableSortExampleController::description'
   requirements:
     _permission: 'access content'
+  options:
+    no_cache: 'TRUE'

tablesort_example/tests/src/Functional/TableSortExampleTest.php

@@ -41,44 +41,38 @@ public function testTableSortExampleBasic() {
     // Ordered by number decending.
     $item = $this->getSession()->getPage()->find('xpath', '//tbody/tr/td[1]');
     $this->assertEquals(7, $item->getText(), 'Ordered by number decending.');
-    drupal_flush_all_caches();
 
     $this->drupalGet('/examples/tablesort-example', array('query' => array('sort' => 'asc', 'order' => 'Numbers')));
     $assert->statusCodeEquals(200);
     // Ordered by Number ascending.
     $item = $this->getSession()->getPage()->find('xpath', '//tbody/tr/td[1]');
     $this->assertEquals(1, $item->getText(), 'Ordered by Number ascending.');
-    drupal_flush_all_caches();
 
     // Sort by Letters.
     $this->drupalGet('/examples/tablesort-example', array('query' => array('sort' => 'desc', 'order' => 'Letters')));
     $assert->statusCodeEquals(200);
     // Ordered by Letters decending.
     $item = $this->getSession()->getPage()->find('xpath', '//tbody/tr/td[2]');
     $this->assertEquals('w', $item->getText(), 'Ordered by Letters decending.');
-    drupal_flush_all_caches();
 
     $this->drupalGet('/examples/tablesort-example', array('query' => array('sort' => 'asc', 'order' => 'Letters')));
     $assert->statusCodeEquals(200);
     // Ordered by Letters ascending.
     $item = $this->getSession()->getPage()->find('xpath', '//tbody/tr/td[2]');
     $this->assertEquals('a', $item->getText(), 'Ordered by Letters ascending.');
-    drupal_flush_all_caches();
 
     // Sort by Mixture.
     $this->drupalGet('/examples/tablesort-example', array('query' => array('sort' => 'desc', 'order' => 'Mixture')));
     $assert->statusCodeEquals(200);
     // Ordered by Mixture decending.
     $item = $this->getSession()->getPage()->find('xpath', '//tbody/tr/td[3]');
     $this->assertEquals('t982hkv', $item->getText(), 'Ordered by Mixture decending.');
-    drupal_flush_all_caches();
 
     $this->drupalGet('/examples/tablesort-example', array('query' => array('sort' => 'asc', 'order' => 'Mixture')));
     $assert->statusCodeEquals(200);
     // Ordered by Mixture ascending.
     $item = $this->getSession()->getPage()->find('xpath', '//tbody/tr/td[3]');
     $this->assertEquals('0kuykuh', $item->getText(), 'Ordered by Mixture ascending.');
-    drupal_flush_all_caches();
 
   }