diff --git a/tests/unit/framework/behaviors/AutoTimestampTest.php b/tests/unit/framework/behaviors/AutoTimestampTest.php
new file mode 100644
index 0000000..51bbe2f
--- /dev/null
+++ b/tests/unit/framework/behaviors/AutoTimestampTest.php
@@ -0,0 +1,137 @@
+<?php
+
+use yiiunit\TestCase;
+use yii\db\Connection;
+use yii\db\ActiveRecord;
+use yii\behaviors\AutoTimestamp;
+
+/**
+ * Unit test for [[\yii\behaviors\AutoTimestamp]].
+ * @see AutoTimestamp
+ */
+class AutoTimestampTest extends TestCase
+{
+	/**
+	 * @var Connection test db connection
+	 */
+	protected $dbConnection;
+	/**
+	 * @var string test table name.
+	 */
+	protected static $testTableName = 'test_table';
+	/**
+	 * @var string test Active Record class name.
+	 */
+	protected static $testActiveRecordClassName;
+
+	public static function setUpBeforeClass()
+	{
+		if (!extension_loaded('pdo') || !extension_loaded('pdo_sqlite')) {
+			static::markTestSkipped('PDO and SQLite extensions are required.');
+		}
+		static::$testActiveRecordClassName = get_called_class() . '_TestActiveRecord_' . sha1(uniqid());
+	}
+
+	public function setUp() {
+		$this->mockApplication(
+			array(
+				'components' => array(
+					'db' => array(
+						'class' => '\yii\db\Connection',
+						'dsn' => 'sqlite::memory:',
+					)
+				)
+			)
+		);
+
+		$columns = array(
+			'id' => 'pk',
+			'create_time' => 'integer',
+			'update_time' => 'integer',
+		);
+		Yii::$app->getDb()->createCommand()->createTable(self::$testTableName, $columns)->execute();
+
+		$this->declareTestActiveRecordClass();
+	}
+
+	public function tearDown()
+	{
+		Yii::$app->getDb()->close();
+		parent::tearDown();
+	}
+
+	/**
+	 * Declares test Active Record class with auto timestamp behavior attached.
+	 */
+	protected function declareTestActiveRecordClass()
+	{
+		$className = static::$testActiveRecordClassName;
+		if (class_exists($className, false)) {
+			return true;
+		}
+
+		$activeRecordClassName = ActiveRecord::className();
+		$behaviorClassName = AutoTimestamp::className();
+		$tableName = static::$testTableName;
+
+		$classDefinitionCode = <<<EOL
+class {$className} extends {$activeRecordClassName}
+{
+	public function behaviors()
+	{
+		return array(
+			'timestamp' => array(
+				'class' => '{$behaviorClassName}',
+				'attributes' => array(
+					static::EVENT_BEFORE_INSERT => array('create_time', 'update_time'),
+					static::EVENT_BEFORE_UPDATE => 'update_time',
+				),
+			),
+		);
+	}
+
+	public static function tableName()
+	{
+		return '{$tableName}';
+	}
+}
+EOL;
+		eval($classDefinitionCode);
+		return true;
+	}
+
+	// Tests :
+
+	public function testNewRecord()
+	{
+		$currentTime = time();
+
+		$className = static::$testActiveRecordClassName;
+		$model = new $className();
+		$model->save(false);
+
+		$this->assertTrue($model->create_time >= $currentTime);
+		$this->assertTrue($model->update_time >= $currentTime);
+	}
+
+	/**
+	 * @depends testNewRecord
+	 */
+	public function testUpdateRecord()
+	{
+		$currentTime = time();
+
+		$className = static::$testActiveRecordClassName;
+		$model = new $className();
+		$model->save(false);
+
+		$enforcedTime = $currentTime - 100;
+
+		$model->create_time = $enforcedTime;
+		$model->update_time = $enforcedTime;
+		$model->save(false);
+
+		$this->assertEquals($enforcedTime, $model->create_time, 'Create time has been set on update!');
+		$this->assertTrue($model->update_time >= $currentTime, 'Update time has NOT been set on update!');
+	}
+}
\ No newline at end of file