--- /dev/null
+<?php
+
+namespace Drupal\Tests\Traits\Core\Config;
+
+use \Drupal\Core\Config\Schema\SchemaIncompleteException;
+
+/**
+ * Adds a test for the configuration schema checker use in tests.
+ */
+trait SchemaConfigListenerTestTrait {
+
+ /**
+ * Tests \Drupal\Core\Config\Development\ConfigSchemaChecker.
+ */
+ public function testConfigSchemaChecker() {
+ // Test a non-existing schema.
+ $message = 'Expected SchemaIncompleteException thrown';
+ try {
+ $this->config('config_schema_test.schemaless')->set('foo', 'bar')->save();
+ $this->fail($message);
+ }
+ catch (SchemaIncompleteException $e) {
+ $this->pass($message);
+ $this->assertEqual('No schema for config_schema_test.schemaless', $e->getMessage());
+ }
+
+ // Test a valid schema.
+ $message = 'Unexpected SchemaIncompleteException thrown';
+ $config = $this->config('config_test.types')->set('int', 10);
+ try {
+ $config->save();
+ $this->pass($message);
+ }
+ catch (SchemaIncompleteException $e) {
+ $this->fail($message);
+ }
+
+ // Test an invalid schema.
+ $message = 'Expected SchemaIncompleteException thrown';
+ $config = $this->config('config_test.types')
+ ->set('foo', 'bar')
+ ->set('array', 1);
+ try {
+ $config->save();
+ $this->fail($message);
+ }
+ catch (SchemaIncompleteException $e) {
+ $this->pass($message);
+ $this->assertEqual('Schema errors for config_test.types with the following errors: config_test.types:array variable type is integer but applied schema class is Drupal\Core\Config\Schema\Sequence, config_test.types:foo missing schema', $e->getMessage());
+ }
+
+ }
+
+}