public function testFindIndexByAsArray()
 {
     parent::testFindIndexByAsArray();
     // indexBy + asArray
     $products = Product::find()->asArray()->indexBy('int')->all();
     $this->assertEquals(3, count($products));
     $this->assertArrayHasKey('id', $products['123']);
     $this->assertArrayHasKey('name', $products['123']);
     $this->assertArrayHasKey('dynamic_columns', $products['123']);
     $this->assertArrayHasKey('id', $products['456']);
     $this->assertArrayHasKey('name', $products['456']);
     $this->assertArrayHasKey('dynamic_columns', $products['456']);
     $this->assertArrayHasKey('id', $products['792']);
     $this->assertArrayHasKey('name', $products['792']);
     $this->assertArrayHasKey('dynamic_columns', $products['792']);
     // indexBy + asArray + not existed nested column
     $products = Product::find()->asArray()->indexBy('children.str')->all();
     $this->assertEquals(3, count($products));
     $this->assertArrayHasKey('id', $products['value1']);
     $this->assertArrayHasKey('name', $products['value1']);
     $this->assertArrayHasKey('dynamic_columns', $products['value1']);
     // column missing - pk should be used
     $this->assertArrayHasKey('id', $products['']);
     $this->assertArrayHasKey('name', $products['']);
     $this->assertArrayHasKey('dynamic_columns', $products['']);
     $this->assertArrayHasKey('id', $products['value3']);
     $this->assertArrayHasKey('name', $products['value3']);
     $this->assertArrayHasKey('dynamic_columns', $products['value3']);
 }