public function testSetValuesSafeCanSetPrimaryKey()
 {
     //blacklist doesn't contain 'id', so id should be allowed
     $details = new BookDetails($this->conn);
     $details->setValuesSafe(['id' => 20, 'books_id' => 40, 'synopsis' => 'foo']);
     $this->assertSame(['id' => 20, 'synopsis' => 'foo'], $details->getValues());
 }