Hey i want to test observer in mockk. Anyone know how to do that.

viewModel.onDownloadErrorLiveData.observe(this, { consumable ->
           some code
        })

You can get a reference to arguments passed in with

capture

in a verify block or in an

answers

block. Then just manually invoke the observer.

@Matt Thompson thanks for your reply. I am new in this library. I didn't get the reference or example. Can you please give me the example if possible. It would be great pleasure for me.

Sorry not on a proper keyboard but I'll try...

```lateinit var observer : Observer
every { mockLiveData.observe(any(), any()) } answers { observer = secondArg() as Observer }

@Matt Thompson

private fun yo(){
    viewModel.consentTag.observe(this, Observer { type ->
        typeText.text = type
    })
}

this is my function

you need to add the generic type of the LiveData

okk

yeah when you cast it using

as

you also need to define the type

Sorry for again asking this

no,

as Observer<ConsentType>

and little bit confuse

private fun yo(){
    viewModel.consentTag.observe(this, Observer { type ->
        typeText.text = type
    })
}

how can i set value

type

in typeText

once you have the reference to the observer you can manually invoke

onChanged

@Matt Thompson like this

@Test
    fun `yo `() {
        val value = ConsentType.GENERAL
        every { mockViewModel.consentTag.observe(any(), any()) } answers {
            observer = secondArg() as Observer<ConsentType>
        }
        observer.onChanged(value)
        consentActivity.yo()
        verify { mockTextView.tag = value }
    }

yeah that makes sense - the way

every

/

answers

works is that the

answers

block with be run every time the function inside of

every

gets called. so if this

yo

function is what calls it, you need to call it in order to initialize your

observer

var

So i need to call

yo

at top of function ?