withdrawable-1.kt

fun withDrawable(@DrawableRes id: Int) = object : TypeSafeMatcher<View>() {
    override fun describeTo(description: Description) {
        description.appendText("ImageView with drawable same as drawable with id $id")
    }

    override fun matchesSafely(view: View): Boolean {
        val context = view.context
        val expectedDrawable = context.getDrawable(id)

        return view is ImageView && ??? // what now?
    }
}