--- /dev/null
+<?php
+
+namespace Drupal\Tests\Core\Plugin\Discovery;
+
+use Drupal\Tests\UnitTestCase;
+use Drupal\Core\Plugin\Discovery\YamlDiscoveryDecorator;
+
+/**
+ * YamlDiscoveryDecorator unit tests.
+ *
+ * @group Plugin
+ */
+class YamlDiscoveryDecoratorTest extends UnitTestCase {
+
+ /**
+ * The YamlDiscovery instance to test.
+ *
+ * @var \Drupal\Core\Plugin\Discovery\YamlDiscoveryDecorator
+ */
+ protected $discoveryDecorator;
+
+ /**
+ * Expected provider => key mappings for testing.
+ *
+ * @var array
+ */
+ protected $expectedKeys = [
+ 'test_1' => 'test_1_a',
+ 'another_provider_1' => 'test_1_b',
+ 'another_provider_2' => 'test_2_a',
+ 'test_2' => 'test_2_b',
+ 'decorated_1' => 'decorated_test_1',
+ 'decorated_2' => 'decorated_test_2',
+ ];
+
+ protected function setUp() {
+ parent::setUp();
+
+ $base_path = __DIR__ . '/Fixtures';
+ // Set up the directories to search.
+ $directories = [
+ 'test_1' => $base_path . '/test_1',
+ 'test_2' => $base_path . '/test_2',
+ ];
+
+ $definitions = [
+ 'decorated_test_1' => [
+ 'id' => 'decorated_test_1',
+ 'name' => 'Decorated test 1',
+ 'provider' => 'decorated_1',
+ ],
+ 'decorated_test_2' => [
+ 'id' => 'decorated_test_2',
+ 'name' => 'Decorated test 1',
+ 'provider' => 'decorated_2',
+ ],
+ ];
+
+ $decorated = $this->getMock('Drupal\Component\Plugin\Discovery\DiscoveryInterface');
+ $decorated->expects($this->once())
+ ->method('getDefinitions')
+ ->will($this->returnValue($definitions));
+
+ $this->discoveryDecorator = new YamlDiscoveryDecorator($decorated, 'test', $directories);
+ }
+
+ /**
+ * Tests the getDefinitions() method.
+ */
+ public function testGetDefinitions() {
+ $definitions = $this->discoveryDecorator->getDefinitions();
+
+ $this->assertInternalType('array', $definitions);
+ $this->assertCount(6, $definitions);
+
+ foreach ($this->expectedKeys as $expected_key) {
+ $this->assertArrayHasKey($expected_key, $definitions);
+ }
+
+ foreach ($definitions as $id => $definition) {
+ foreach (['name', 'id', 'provider'] as $key) {
+ $this->assertArrayHasKey($key, $definition);
+ }
+ $this->assertEquals($id, $definition['id']);
+ $this->assertEquals(array_search($id, $this->expectedKeys), $definition['provider']);
+ }
+ }
+
+}