ActivityTestRule.getActivity returns null in Before method

Question

I need to empty my user's data before each test

// Kotlin code
fun getActivity() = activityRule.getActivity()

Before
fun setUp() {
    cleanUp(getActivity())
}

I need to get a Context in order to do so, but in setUp, activityRule.getActivity() returns null.

I also tried:

Before
fun setUp() {
    val i = Intent()
    i.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP)
    activityRule.lauchActivity(i)
    cleanUp(getActivity())
}

I got an activity, but cleanUp works only half of the time (I believe some race condition apply here)

I want to avoid to cleanUp in an After function in order to see manually my app state if needed.

Is there anyway to get a context in a Before function?

Thanks

Be_Negative · Accepted Answer · 2017-11-20 14:20:51Z

12

You can get the production app context from InstrumentationRegistry like so: InstrumentationRegistry.getTargetContext()

Keep in mind that: InstrumentationRegistry.getContext() is the context of your test apk.

edited Nov 20, 2017 at 14:20

answered May 15, 2015 at 15:43

Be_Negative

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Comments

giorgos.nl · Accepted Answer · 2019-02-28 15:16:35Z

-1

At the moment of writing, InstrumentationRegistry is deprecated. I use ApplicationProvider.getApplicationContext<Application>() from androidx.test library instead.

The dependency is: androidTestImplementation "androidx.test.espresso:espresso-core:3.1.1"

answered Feb 28, 2019 at 15:16

giorgos.nl

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1 Comment

kimkevin Over a year ago

androidx.test.InstrumentationRegistry is deprecated. using androidx.test.platform.app.InstrumentationRegistry.

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