diff --git a/core/modules/config/lib/Drupal/config/Tests/ConfigSchemaTest.php b/core/modules/config/lib/Drupal/config/Tests/ConfigSchemaTest.php
index 1cada7a..a8fa13a 100644
--- a/core/modules/config/lib/Drupal/config/Tests/ConfigSchemaTest.php
+++ b/core/modules/config/lib/Drupal/config/Tests/ConfigSchemaTest.php
@@ -268,6 +268,8 @@ public function testConfigSaveWithSchema() {
       'not_present_in_schema' => TRUE,
       // Test a custom type.
       'config_test_integer' => '1',
+      'sequence' => array (1, 0, 1),
+      'type' => 'boolean'
     );
     $untyped_to_typed = $untyped_values;
 
@@ -286,6 +288,8 @@ public function testConfigSaveWithSchema() {
       'null_float' => NULL,
       'not_present_in_schema' => TRUE,
       'config_test_integer' => 1,
+      'sequence' => array (TRUE, FALSE, TRUE),
+      'type' => 'boolean'
     );
 
     // Save config which has a schema that enforces types.
diff --git a/core/modules/config/tests/config_test/config/schema/config_test.schema.yml b/core/modules/config/tests/config_test/config/schema/config_test.schema.yml
index b9a4706..232af27 100644
--- a/core/modules/config/tests/config_test/config/schema/config_test.schema.yml
+++ b/core/modules/config/tests/config_test/config/schema/config_test.schema.yml
@@ -125,3 +125,12 @@ config_test.schema_data_types:
       mapping:
         string:
           type: string
+    sequence:
+      type: sequence
+      sequence:
+        - type: config_test_sequence.[%parent.%parent.type]
+    type:
+      type: string
+
+config_test_sequence.boolean:
+  type: boolean