Drupal 8.0.0 beta 12. More info: https://www.drupal.org/node/2514176

core/tests/Drupal/Tests/Component/Discovery/YamlDiscoveryTest.php

@@ -0,0 +1,66 @@
+<?php
+
+/**
+ * @file
+ * Contains \Drupal\Tests\Component\Discovery\YamlDiscoveryTest.
+ */
+
+namespace Drupal\Tests\Component\Discovery;
+
+use Drupal\Tests\UnitTestCase;
+use Drupal\Component\Discovery\YamlDiscovery;
+use org\bovigo\vfs\vfsStream;
+use org\bovigo\vfs\vfsStreamWrapper;
+use org\bovigo\vfs\vfsStreamDirectory;
+
+/**
+ * YamlDiscovery component unit tests.
+ *
+ * @group Discovery
+ */
+class YamlDiscoveryTest extends UnitTestCase {
+
+  /**
+   * Tests the YAML file discovery.
+   */
+  public function testDiscovery() {
+    vfsStreamWrapper::register();
+    $root = new vfsStreamDirectory('modules');
+    vfsStreamWrapper::setRoot($root);
+    $url = vfsStream::url('modules');
+
+    mkdir($url . '/test_1');
+    file_put_contents($url . '/test_1/test_1.test.yml', 'name: test');
+    file_put_contents($url . '/test_1/test_2.test.yml', 'name: test');
+
+    mkdir($url . '/test_2');
+    file_put_contents($url . '/test_2/test_3.test.yml', 'name: test');
+    // Write an empty YAML file.
+    file_put_contents($url . '/test_2/test_4.test.yml', '');
+
+    // Set up the directories to search.
+    $directories = array(
+      'test_1' => $url . '/test_1',
+      'test_2' => $url . '/test_1',
+      'test_3' => $url . '/test_2',
+      'test_4' => $url . '/test_2',
+    );
+
+    $discovery = new YamlDiscovery('test', $directories);
+    $data = $discovery->findAll();
+
+    $this->assertEquals(count($data), count($directories));
+    $this->assertArrayHasKey('test_1', $data);
+    $this->assertArrayHasKey('test_2', $data);
+    $this->assertArrayHasKey('test_3', $data);
+    $this->assertArrayHasKey('test_4', $data);
+
+    foreach (array('test_1', 'test_2', 'test_3') as $key) {
+      $this->assertArrayHasKey('name', $data[$key]);
+      $this->assertEquals($data[$key]['name'], 'test');
+    }
+
+    $this->assertSame(array(), $data['test_4']);
+  }
+
+}