我如何在 Observable RxJava 中测试参数

Question

I have some method:

repository.get(arg1, arg2, arg3)

Method return Single<List<SomeObject>>

I need testing that Single was called onSubscribe() with specific arguments.

repository.get(arg1, arg2, arg3)
            .test()
            .assertSubscribed()

This method ignores arguments which I put in method repository.get() .

How I can test that subscribe called with certain arguments?

Answer 1

use Schedulers.trampoline() to make the subscription occur on the current thread. then you can assert the required args

@Before
    fun setup() {
        RxJavaPlugins.setIoSchedulerHandler { Schedulers.trampoline() }
        RxJavaPlugins.setComputationSchedulerHandler { Schedulers.trampoline() }
    }

this makes the code run on the current thread. then you can assert the args

repository.get(arg1, arg2, arg3)
            .test()
            .subscribe {
                 // do the assertions here
             }