--- /dev/null
+<?php
+
+namespace Drupal\KernelTests\Core\Entity;
+
+use Drupal\Core\TypedData\DataDefinition;
+use Drupal\KernelTests\KernelTestBase;
+
+/**
+ * Tests validation constraints for BundleConstraintValidator.
+ *
+ * @group Entity
+ */
+class BundleConstraintValidatorTest extends KernelTestBase {
+
+ /**
+ * The typed data manager to use.
+ *
+ * @var \Drupal\Core\TypedData\TypedDataManager
+ */
+ protected $typedData;
+
+ public static $modules = ['node', 'field', 'text', 'user'];
+
+ protected function setUp() {
+ parent::setUp();
+ $this->installEntitySchema('user');
+ $this->typedData = $this->container->get('typed_data_manager');
+ }
+
+ /**
+ * Tests bundle constraint validation.
+ */
+ public function testValidation() {
+ // Test with multiple values.
+ $this->assertValidation(['foo', 'bar']);
+ // Test with a single string value as well.
+ $this->assertValidation('foo');
+ }
+
+ /**
+ * Executes the BundleConstraintValidator test for a given bundle.
+ *
+ * @param string|array $bundle
+ * Bundle/bundles to use as constraint option.
+ */
+ protected function assertValidation($bundle) {
+ // Create a typed data definition with a Bundle constraint.
+ $definition = DataDefinition::create('entity_reference')
+ ->addConstraint('Bundle', $bundle);
+
+ // Test the validation.
+ $node = $this->container->get('entity.manager')->getStorage('node')->create(['type' => 'foo']);
+
+ $typed_data = $this->typedData->create($definition, $node);
+ $violations = $typed_data->validate();
+ $this->assertEqual($violations->count(), 0, 'Validation passed for correct value.');
+
+ // Test the validation when an invalid value is passed.
+ $page_node = $this->container->get('entity.manager')->getStorage('node')->create(['type' => 'baz']);
+
+ $typed_data = $this->typedData->create($definition, $page_node);
+ $violations = $typed_data->validate();
+ $this->assertEqual($violations->count(), 1, 'Validation failed for incorrect value.');
+
+ // Make sure the information provided by a violation is correct.
+ $violation = $violations[0];
+ $this->assertEqual($violation->getMessage(), t('The entity must be of bundle %bundle.', ['%bundle' => implode(', ', (array) $bundle)]), 'The message for invalid value is correct.');
+ $this->assertEqual($violation->getRoot(), $typed_data, 'Violation root is correct.');
+ $this->assertEqual($violation->getInvalidValue(), $page_node, 'The invalid value is set correctly in the violation.');
+ }
+
+}