diff --git a/core/modules/node/lib/Drupal/node/Tests/NodeAccessLanguageTest.php b/core/modules/node/lib/Drupal/node/Tests/NodeAccessLanguageTest.php
index 6ff6ae0..85fcafc 100644
--- a/core/modules/node/lib/Drupal/node/Tests/NodeAccessLanguageTest.php
+++ b/core/modules/node/lib/Drupal/node/Tests/NodeAccessLanguageTest.php
@@ -80,7 +80,7 @@ function testNodeAccess() {
 
     // Reset the node access cache and turn on our test node_access() code.
     drupal_static_reset('node_access');
-    variable_set('node_access_test_secret_catalan', 1);
+    state()->set('node_access_test_secret_catalan', 1);
 
     // Tests that Hungarian is still accessible.
     $this->assertNodeAccess($expected_node_access, $node, $web_user, 'hu');
diff --git a/core/modules/node/lib/Drupal/node/Tests/NodeEntityViewModeAlterTest.php b/core/modules/node/lib/Drupal/node/Tests/NodeEntityViewModeAlterTest.php
index b66944a..f072254 100644
--- a/core/modules/node/lib/Drupal/node/Tests/NodeEntityViewModeAlterTest.php
+++ b/core/modules/node/lib/Drupal/node/Tests/NodeEntityViewModeAlterTest.php
@@ -43,7 +43,7 @@ function testNodeViewModeChange() {
     $node = $this->drupalGetNodeByTitle($edit["title"]);
 
     // Set the flag to alter the view mode and view the node.
-    variable_set('node_test_change_view_mode', 'teaser');
+    state()->set('node_test_change_view_mode', 'teaser');
     $this->drupalGet('node/' . $node->nid);
 
     // Check that teaser mode is viewed.
diff --git a/core/modules/node/tests/modules/node_access_test/node_access_test.module b/core/modules/node/tests/modules/node_access_test/node_access_test.module
index 4efee88..493b486 100644
--- a/core/modules/node/tests/modules/node_access_test/node_access_test.module
+++ b/core/modules/node/tests/modules/node_access_test/node_access_test.module
@@ -241,7 +241,8 @@ function _node_access_test_node_write(Node $node) {
  * Implements hook_node_access().
  */
 function node_access_test_node_access($node, $op, $account, $langcode) {
-  if (variable_get('node_access_test_secret_catalan', 0) && $langcode == 'ca') {
+  $secret_catalan = state()->get('node_access_test_secret_catalan') ?: 0;
+  if ($secret_catalan && $langcode == 'ca') {
     // Make all Catalan content secret.
     return NODE_ACCESS_DENY;
   }
diff --git a/core/modules/node/tests/modules/node_test/node_test.module b/core/modules/node/tests/modules/node_test/node_test.module
index 36b59c9..74d7b0c 100644
--- a/core/modules/node/tests/modules/node_test/node_test.module
+++ b/core/modules/node/tests/modules/node_test/node_test.module
@@ -160,7 +160,7 @@ function node_test_node_update(Node $node) {
  */
 function node_test_entity_view_mode_alter(&$view_mode, Drupal\Core\Entity\EntityInterface $entity, $context) {
   // Only alter the view mode if we are on the test callback.
-  if ($change_view_mode = variable_get('node_test_change_view_mode', '')) {
+  if ($change_view_mode = state()->get( 'node_test_change_view_mode') ?: '') {
     $view_mode = $change_view_mode;
   }
 }