--- /dev/null
+<?php
+
+namespace Drupal\entity_test\Cache;
+
+use Drupal\Core\Cache\CacheableMetadata;
+use Drupal\Core\Cache\Context\CacheContextInterface;
+
+/**
+ * Defines the entity_test view grants cache context service.
+ *
+ * Cache context ID: 'entity_test_view_grants'.
+ *
+ * @see \Drupal\node\Cache\NodeAccessViewGrantsCacheContext
+ */
+class EntityTestViewGrantsCacheContext implements CacheContextInterface {
+
+ /**
+ * {@inheritdoc}
+ */
+ public static function getLabel() {
+ return t("Entity test view grants");
+ }
+
+ /**
+ * {@inheritdoc}
+ */
+ public function getContext() {
+ // Return a constant value, so we can fetch render cache both in actual
+ // requests and test code itself.
+ return '299792458';
+ }
+
+ /**
+ * {@inheritdoc}
+ */
+ public function getCacheableMetadata() {
+ return new CacheableMetadata();
+ }
+
+}