量角器——用动态填充的输入测试角度形式

I am trying to write an e2e test for my angular application, and in particular a form that has 3 select inputs on. The test will need to involve picking random options from these selects. The first select is already populated with data, but the other 2 selects asynchronously populate when the one before has been selected, so they are dependant on each other.I am trying to write an e2e test for my angular