Fixes #1025: Implemented support for class-level events.

tests/unit/framework/base/EventTest.php

@@ -0,0 +1,93 @@
+<?php
+/**
+ * @link http://www.yiiframework.com/
+ * @copyright Copyright (c) 2008 Yii Software LLC
+ * @license http://www.yiiframework.com/license/
+ */
+
+namespace yiiunit\framework\base;
+
+use yii\base\Component;
+use yii\base\Event;
+use yiiunit\TestCase;
+
+/**
+ * @author Qiang Xue <qiang.xue@gmail.com>
+ * @since 2.0
+ */
+class EventTest extends TestCase
+{
+	public $counter;
+
+	public function setUp()
+	{
+		$this->counter = 0;
+		Event::off(ActiveRecord::className(), 'save');
+		Event::off(Post::className(), 'save');
+		Event::off(User::className(), 'save');
+	}
+
+	public function testOn()
+	{
+		Event::on(Post::className(), 'save', function ($event) {
+			$this->counter += 1;
+		});
+		Event::on(ActiveRecord::className(), 'save', function ($event) {
+			$this->counter += 3;
+		});
+		$this->assertEquals(0, $this->counter);
+		$post = new Post;
+		$post->save();
+		$this->assertEquals(4, $this->counter);
+		$user = new User;
+		$user->save();
+		$this->assertEquals(7, $this->counter);
+	}
+
+	public function testOff()
+	{
+		$handler = function ($event) {
+			$this->counter ++;
+		};
+		$this->assertFalse(Event::hasHandlers(Post::className(), 'save'));
+		Event::on(Post::className(), 'save', $handler);
+		$this->assertTrue(Event::hasHandlers(Post::className(), 'save'));
+		Event::off(Post::className(), 'save', $handler);
+		$this->assertFalse(Event::hasHandlers(Post::className(), 'save'));
+	}
+
+	public function testHasHandlers()
+	{
+		$this->assertFalse(Event::hasHandlers(Post::className(), 'save'));
+		$this->assertFalse(Event::hasHandlers(ActiveRecord::className(), 'save'));
+		Event::on(Post::className(), 'save', function ($event) {
+			$this->counter += 1;
+		});
+		$this->assertTrue(Event::hasHandlers(Post::className(), 'save'));
+		$this->assertFalse(Event::hasHandlers(ActiveRecord::className(), 'save'));
+
+		$this->assertFalse(Event::hasHandlers(User::className(), 'save'));
+		Event::on(ActiveRecord::className(), 'save', function ($event) {
+			$this->counter += 1;
+		});
+		$this->assertTrue(Event::hasHandlers(User::className(), 'save'));
+		$this->assertTrue(Event::hasHandlers(ActiveRecord::className(), 'save'));
+	}
+}
+
+class ActiveRecord extends Component
+{
+	public function save()
+	{
+		$this->trigger('save');
+	}
+}
+
+class Post extends ActiveRecord
+{
+}
+
+class User extends ActiveRecord
+{
+
+}