PHP Epic_Mongo_Document::isEmpty示例

 public function testIsEmpty()
 {
     $doc = new Epic_Mongo_Document();
     $this->assertTrue($doc->isEmpty());
     $doc->test = new Epic_Mongo_Document();
     $this->assertTrue($doc->isEmpty());
     $doc->test2 = true;
     $this->assertFalse($doc->isEmpty());
     $this->assertTrue($doc->test->isEmpty());
     $doc->test2 = null;
     $this->assertTrue($doc->isEmpty());
     $doc->test->test2 = true;
     $this->assertFalse($doc->isEmpty());
     $this->assertFalse($doc->test->isEmpty());
 }